<PAGE>

                                   FORM 10-Q

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549


(Mark One)
[x]     Quarterly report pursuant to Section 13 or 15(d) of the Securities
        Exchange Act of 1934
For the quarterly period ended September 30, 2000
                               ------------------
[ ]     Transition report pursuant to Section 13 or 15(d) of the Securities
        Exchange Act of 1934
For the transition period from ______________ to _________________

                       Commission File Number:  0-15714

                       JONES CABLE INCOME FUND 1-C, LTD.
--------------------------------------------------------------------------------
               Exact name of registrant as specified in charter

Colorado                                                             #84-1010419
--------------------------------------------------------------------------------
State of organization                                     I.R.S. employer I.D. #

                            c/o Comcast Corporation
                1500 Market Street, Philadelphia, PA 19102-2148
                -----------------------------------------------
                     Address of principal executive office

                                (215) 665-1700
                                --------------
                         Registrant's telephone number


Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.

Yes   X                                                                No
    -----                                                                 -----
<PAGE>

                       JONES CABLE INCOME FUND 1-C, LTD.
                       ---------------------------------
                            (A Limited Partnership)

                     UNAUDITED CONSOLIDATED BALANCE SHEETS
                     -------------------------------------
<TABLE>
<CAPTION>

                                                                                     September 30,                December 31,
                                      ASSETS                                              2000                        1999
                                      ------                                       -------------------         -------------------
<S>                                                                             <C>                         <C>
Cash                                                                               $         1,504,888         $         7,033,894

Proceeds from sale in interest-bearing account                                                       -                     509,375
                                                                                   -------------------         -------------------

          Total assets                                                             $         1,504,888         $         7,543,269
                                                                                   ===================         ===================


                        LIABILITIES AND PARTNERS' CAPITAL
                        ---------------------------------

LIABILITIES:
  Accrued distribution to limited partners                                         $                 -         $         2,700,000
  Accrued distribution to Venture Partner                                                            -                   2,500,000
  Accrued liabilities                                                                           40,243                           -
  Advances from affiliates                                                                     162,565                     734,773
                                                                                   -------------------         -------------------

          Total liabilities                                                                    202,808                   5,934,773
                                                                                   -------------------         -------------------

MINORITY INTEREST IN JOINT VENTURE                                                                   -                     249,321
                                                                                   -------------------         -------------------

PARTNER'S CAPITAL:
  General Partner-
     Contributed capital                                                                         1,000                       1,000
     Distributions                                                                            (113,443)                   (113,443)
     Accumulated earnings                                                                      112,443                     112,443
                                                                                   -------------------         -------------------

                                                                                                     -                           -
                                                                                   -------------------         -------------------

Limited Partners-
  Net contributed capital (85,059 units outstanding
    at September 30, 2000 and December 31, 1999)                                            34,909,262                  34,909,262
  Distributions                                                                            (47,879,705)                (47,879,705)
  Accumulated earnings                                                                      14,272,523                  14,329,618
                                                                                   -------------------         -------------------

                                                                                             1,302,080                   1,359,175
                                                                                   -------------------         -------------------

          Total liabilities and partners' capital                                  $         1,504,888         $         7,543,269
                                                                                   ===================         ===================

</TABLE>


     The accompanying notes to unaudited consolidated financial statements
     are an integral part of these unaudited consolidated balance sheets.

                                       2
<PAGE>

                       JONES CABLE INCOME FUND 1-C, LTD.
                       ---------------------------------
                            (A Limited Partnership)

                UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS
                -----------------------------------------------
<TABLE>
<CAPTION>

                                                        For the Three Months Ended              For the Nine Months Ended
                                                               September 30,                          September 30,
                                                   --------------------------------------  -------------------------------------
                                                         2000                1999                2000               1999
                                                   -----------------  -------------------  -----------------  ------------------
<S>                                              <C>                 <C>                   <C>               <C>
REVENUES                                           $               -  $           188,993  $               -  $        1,384,006

COSTS AND EXPENSES:
  Operating expenses                                               -              184,450                  -             909,868
  Management fees and allocated
    overhead from Jones Intercable                                 -               17,843                  -             146,326
  Depreciation and amortization                                    -               64,186                  -             461,230
                                                   -----------------  -------------------  -----------------  ------------------

OPERATING LOSS                                                     -              (77,486)                 -            (133,418)
                                                   -----------------  -------------------  -----------------  ------------------

OTHER INCOME (EXPENSE):
  Interest expense                                            (1,917)              (3,514)            (3,642)            (84,280)
  Interest income                                            (10,956)              57,789            104,001              72,954
  Gain on sale of cable television system                          -            6,350,069                  -           6,350,069
  Other, net                                                 (54,400)             (22,376)          (157,454)            498,991
                                                   -----------------  -------------------  -----------------  ------------------

          Total other income
            (expense), net                                   (67,273)           6,381,968            (57,095)          6,837,734
                                                   -----------------  -------------------  -----------------  ------------------

CONSOLIDATED INCOME (LOSS)                                   (67,273)           6,304,482            (57,095)          6,704,316

MINORITY INTEREST IN
  CONSOLIDATED INCOME                                              -           (2,507,294)                 -          (2,666,306)
                                                   -----------------  -------------------  -----------------  ------------------

NET INCOME (LOSS)                                  $         (67,273) $         3,797,188  $         (57,095) $        4,038,010
                                                   =================  ===================  =================  ==================

ALLOCATION OF NET INCOME (LOSS):

  General Partner                                  $               -  $            (2,408) $               -  $                -
                                                   =================  ===================  =================  ==================

  Limited Partners                                 $         (67,273) $         3,799,596  $         (57,095) $        4,038,010
                                                   =================  ===================  =================  ==================

NET INCOME  (LOSS) PER LIMITED
  PARTNERSHIP UNIT                                 $           (0.79) $             44.67  $           (0.67) $            47.47
                                                   =================  ===================  =================  ==================

WEIGHTED AVERAGE NUMBER
  OF LIMITED PARTNERSHIP
  UNITS OUTSTANDING                                           85,059               85,059             85,059              85,059
                                                   =================  ===================  =================  ==================
</TABLE>

     The accompanying notes to unaudited consolidated financial statements
       are an integral part of these unaudited consolidated statements.

                                       3
<PAGE>

                       JONES CABLE INCOME FUND 1-C, LTD.
                       ---------------------------------
                            (A Limited Partnership)

                UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS
                -----------------------------------------------
<TABLE>
<CAPTION>
                                                                                             For the Nine Months Ended
                                                                                                   September 30,
                                                                                   -----------------------------------------------
                                                                                          2000                        1999
                                                                                   -------------------         -------------------
<S>                                                                              <C>                        <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income (loss)                                                                $           (57,095)        $         4,038,010
  Adjustments to reconcile net income (loss) to net
    cash provided by (used in) operating activities:
          Depreciation and amortization                                                              -                     461,230
          Gain of sale of cable television system                                                    -                  (6,350,069)
          Minority interest in consolidated income                                                   -                   2,666,306
          Decrease in trade receivables, net                                                         -                       8,676
          Decrease in deposits, prepaid expenses
            and deferred charges                                                                     -                     413,166
          Decrease in advances from affiliates                                                (572,208)                   (794,163)
          Increase (decrease) in accounts payable and
            accrued liabilities and subscriber prepayments                                      40,243                    (117,445)
                                                                                   -------------------         -------------------

          Net cash provided by (used in)
               operating activities                                                           (589,060)                    325,711
                                                                                   -------------------         -------------------

CASH FLOWS FROM INVESTING ACTIVITIES:
  Purchase of property and equipment, net                                                            -                    (109,589)
  Proceeds from escrow                                                                         509,375                           -
  Proceeds from sale of cable television system, net of
     brokerage fee and escrow proceeds                                                               -                   8,797,448
                                                                                   -------------------         -------------------

          Net cash provided by investing activities                                            509,375                   8,687,859
                                                                                   -------------------         -------------------

CASH FLOWS FROM FINANCING ACTIVITIES:
  Repayment of debt                                                                                  -                  (2,417,756)
  Distribution to Venture Partner                                                           (2,749,321)                          -
  Distribution to limited partners                                                          (2,700,000)                          -
                                                                                   -------------------         -------------------

          Net cash used in financing activities                                             (5,449,321)                 (2,417,756)
                                                                                   -------------------         -------------------

Increase (decrease) in cash                                                                 (5,529,006)                  6,595,814

Cash, beginning of period                                                                    7,033,894                     118,938
                                                                                   -------------------         -------------------

Cash, end of period                                                                $         1,504,888         $         6,714,752
                                                                                   ===================         ===================

SUPPLEMENTAL CASH FLOW DISCLOSURE:
  Interest paid                                                                    $            37,969         $            84,684
                                                                                   ===================         ===================
</TABLE>

     The accompanying notes to unaudited consolidated financial statements
       are an integral part of these unaudited consolidated statements.

                                       4
<PAGE>

                       JONES CABLE INCOME FUND 1-C, LTD.
                       ---------------------------------
                            (A Limited Partnership)

             NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS
             ----------------------------------------------------

(1)     This Form 10-Q is being filed in conformity with the SEC requirements
for unaudited financial statements and does not contain all of the necessary
footnote disclosures required for a complete presentation of the Balance Sheets
and Statements of Operations and Cash Flows in conformity with generally
accepted accounting principles. However, in the opinion of management, this data
includes all adjustments, consisting only of normal recurring accruals,
necessary to present fairly the financial position of Jones Cable Income Fund
1-C, Ltd. (the "Partnership") at September 30, 2000 and December 31, 1999, its
Statements of Operations for the three and nine month periods ended September
30, 2000 and 1999 and its Statements of Cash Flows for the nine month periods
ended September 30, 2000 and 1999. Certain prior period amounts have been
reclassified to conform to the 2000 presentation.

        The accompanying consolidated financial statements historically include
100 percent of the accounts of the Partnership and those of Jones Cable
Income Fund 1-B/C Venture (the "Venture") reduced by the 40 percent minority
interest in the Venture owned by Jones Cable Income Fund 1-B, Ltd. ("Fund 1-
B"). All interpartnership accounts and transactions have been eliminated.
Neither the Partnership nor the Venture currently own any cable television
systems. The Venture distributed its remaining cash to the Partnership and Fund
1-B in September 2000 and the Venture is expected to be dissolved in December
2000. The Partnership's only current asset is cash on hand. It is anticipated
that the Partnership will be fully liquidated and dissolved by December 31,
2000.

        Prior to its dissolution, the Partnership will accrue funds to cover its
remaining administrative costs. All cash remaining after such accrual is made
will be distributed to the Partnership's partners pursuant to the distribution
procedures established by the Partnership's limited partnership agreement. It
is expected that all limited partners will receive final distribution checks
from the Partnership before the end of December 2000.

        On April 7, 1999, Comcast Corporation ("Comcast") completed the
acquisition of a controlling interest in Jones Intercable, Inc. ("Jones
Intercable"), the Partnership's general partner until March 2, 2000. In December
1999, Comcast and Jones Intercable entered into a definitive merger agreement
pursuant to which Comcast agreed to acquire all of the outstanding shares of
Jones Intercable not yet owned by Comcast. On March 2, 2000, Jones Intercable
was merged with and into Comcast JOIN Holdings, Inc., a wholly owned subsidiary
of Comcast. As a result of this transaction, Jones Intercable no longer exists
and Comcast JOIN Holdings, Inc. continued as the surviving corporation of the
merger. On August 1, 2000, Comcast JOIN Holdings, Inc. was merged with and into
Comcast Cable Communications, Inc., ("Comcast Cable"), another wholly owned
subsidiary of Comcast. Comcast Cable is now the general partner of the
Partnership. References in these Notes to "the General Partner" refer to Comcast
Cable. The General Partner shares corporate offices with Comcast at 1500 Market
Street, Philadelphia, Pennsylvania 19102-2148.

(2)     On July 30, 1999, the Venture sold the Myrtle Creek System to an
unaffiliated party for a sales price of $9,614,208. From the sale proceeds, the
Venture repaid the outstanding balance on its credit facility of $2,400,000,
paid a $240,355 brokerage fee to The Intercable Group, Ltd., a subsidiary of
Jones Intercable, representing 2.5 percent of the sales price, for acting as a
broker in the transaction, settled working capital adjustments, and deposited
$500,000 into an interest-bearing indemnity escrow account. The remaining sale
proceeds of $6,300,000 were distributed 60 percent to the Partnership and 40
percent to Fund 1-B. From the Partnership's $3,800,000 portion of this amount,
the Partnership retained $1,100,000 to cover its administrative expenses and the
balance was distributed in January 2000 to the Partnership's limited partners
of record as of the July 30, 1999 closing date of the sale of the Myrtle Creek
System. The $2,700,000 distributed to the Partnership's limited partners from
the sale of the Myrtle Creek System resulted in a distribution to limited
partners of $32 for each $500 limited partnership interest, or $64 for each
$1,000 invested in the Partnership

                                       5
<PAGE>

        For a period of one year following the closing date, $500,000 of the
sale proceeds remained in escrow as security for the Venture's agreement to
indemnify the buyer under the asset purchase agreement. Amounts remaining from
this indemnity escrow account plus interest earned on the escrowed funds were
returned to the Venture in August 2000 and distributed to its constituent
partners in September 2000.

(3)     The Partnership reimburses its general partner for certain
administrative expenses. These expenses represent the salaries and related
benefits paid for corporate personnel. Such personnel provide administrative,
accounting, tax, legal and investor relations services to the Partnership. Such
services, and their related costs, are necessary to the administration of the
Partnership until it is dissolved. Such costs were charged to operating costs
during the periods that the cable television systems were in operation.
Subsequent to the sale of the final cable television system, such costs were
charged to other expense. Reimbursements made by the Partnership to its general
partner for overhead and administrative expenses during the three and nine month
periods ended September 30, 2000 were $10,489 and $39,685, respectively.
Reimbursements by the Venture to its general partner for administrative expenses
during the three and nine month periods ended September 30, 1999 were $8,394
and $77,126, respectively, of which $5,056 and $46,453, respectively, were
attributed to the Partnership's 60 percent interest in the Venture.

                                       6
<PAGE>

                       JONES CABLE INCOME FUND 1-C, LTD.
                       ---------------------------------
                            (A Limited Partnership)

        MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
        ---------------------------------------------------------------
                             RESULTS OF OPERATIONS
                             ---------------------

FINANCIAL CONDITION
-------------------

        The Partnership owns a 60 percent interest in the Venture and Fund 1-B
owns a 40 percent interest in the Venture. The accompanying consolidated
financial statements historically include 100 percent of the accounts of the
Partnership and those of the Venture reduced by Fund 1-B's 40 percent minority
interest in the Venture.

        On July 30, 1999, the Venture sold the Myrtle Creek System to an
unaffiliated party for a sales price of $9,614,208. From the sale proceeds, the
Venture repaid all of its indebtedness, paid a brokerage fee, settled working
capital adjustments and deposited $500,000 into an interest-bearing indemnity
escrow account. The remaining sale proceeds of $6,300,000 were distributed 60
percent to the Partnership and 40 percent to Fund 1-B. From the Partnership's
$3,800,000 portion of this amount, the Partnership retained $1,100,000 to cover
its administrative expenses and the balance was distributed in January 2000 to
the Partnership's limited partners of record as of the July 30, 1999 closing
date of the sale of the Myrtle Creek System. The $2,700,000 distributed to the
Partnership's limited partners from the sale of the Myrtle Creek System resulted
in a distribution to limited partners of $32 for each $500 limited partnership
interest, or $64 for each $1,000 invested in the Partnership.

        For a period of one year following the closing date, $500,000 of the
sale proceeds remained in escrow as security for the Venture's agreement to
indemnify the buyer under the asset purchase agreement. Amounts remaining from
this indemnity escrow account plus interest earned on the escrowed funds were
returned to the Venture in August 2000 and distributed to its constituent
partners in September 2000.

        Neither the Partnership nor the Venture currently own any cable
television systems. The Venture distributed its remaining cash to the
Partnership and Fund 1-B in September 2000 and the Venture is expected to be
dissolved in December 2000. The Partnership's only current asset is cash on
hand. It is anticipated that the Partnership will be fully liquidated and
dissolved by December 31, 2000.

        Prior to its dissolution, the Partnership will accrue funds to cover its
remaining administrative costs. All cash remaining after such accrual is made
will be distributed to the Partnership's partners pursuant to the distribution
procedures established by the Partnership's limited partnership agreement. It
is expected that all limited partners will receive final distribution checks
from the Partnership before the end of December 2000.

        The Partnership's current and periodic reporting obligations under the
Securities Exchange Act of 1934, as amended, and the Partnership's quarterly
and annual reporting obligations under Section 3.7 of the Partnership's limited
partnership agreement will cease upon the Partnership's termination. As a
result, it is expected that this quarterly report on SEC Form 10-Q for the
quarter ended September 30, 2000 will be the Partnership's final detailed
financial report to limited partners.

         During the first quarter of 2001, the General Partner will deliver
final tax reports on Form 1065, Schedule K-1 to all limited partners of record
as of the date of the Partnership's dissolution. If, as expected, the
Partnership is dissolved before the end of 2000, the Partnership and its
partners will have no tax reporting obligations beyond the taxable year 2000.

                                       7
<PAGE>

RESULTS OF OPERATIONS
---------------------

        Neither the Partnership nor the Venture currently own any cable
television systems; therefore, a discussion of results of operations would not
be meaningful. Interest income during the first nine months of 2000 totaling
$104,001 was earned on the cash balance on hand. Other expense of $157,454
incurred in the first nine months of 2000 related to various costs associated
with the administration and liquidation of the Partnership.





                          PART II - OTHER INFORMATION


Item 6.  Exhibits and Reports on Form 8-K.

         a)  Exhibits

             27)  Financial Data Schedule

         b)  Reports on Form 8-K

             None

                                       8
<PAGE>

                                  SIGNATURES


        Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                        JONES CABLE INCOME FUND 1-C, LTD.
                                        BY:  COMCAST CABLE COMMUNICATIONS, INC.
                                             General Partner



                                        By:  /S/ Lawrence J. Salva
                                             -----------------------------------
                                             Lawrence J. Salva
                                             Senior Vice President
                                             (Principal Accounting Officer)






Dated:  November 14, 2000

                                       9