UNITED
STATES


SECURITIES
AND EXCHANGE COMMISSION


Washington,
D.C. 20549








FORM
8-K


CURRENT
REPORT





Pursuant
to Section 13 or 15(d) of the


Securities
Exchange Act of 1934








April
18, 2008


Date of
Report (Date of earliest event reported)








NICOR
INC.


(Exact
name of registrant as specified in its charter)








Illinois
            1-7297
            36-2855175(State
      or other jurisdiction
            (Commission
            (I.R.S.
      Employerof
      incorporation)
            File
      Number)
            Identification
      Number)








1844
Ferry Road


Naperville,
Illinois 60563-9600


(Address
of principal executive offices) (Zip Code)





(630)
305-9500


(Registrant’s
telephone number, including area code)








Check the
appropriate box below if the Form 8-K filing is intended to simultaneously
satisfy the filing obligation of the registrant under any of the following
provisions (see General Instruction A.2. below):




[  ]           Written
communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)




[  ]           Soliciting
material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12)




[  ]           Pre-commencement
communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
240.14d-2(b))




[  ]           Pre-commencement
communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
240.13e-4(c))










Page
1





Item7.01              Regulation FD
Disclosure.





The
information in this Item is furnished to, but not filed with, the Securities and
Exchange Commission solely under Item 7.01 of Form 8-K.





On April
18, 2008, Nicor Inc.’s wholly-owned public utility subsidiary, Northern Illinois
Gas Company d/b/a Nicor Gas Company (“Nicor Gas”), issued a press release
announcing its intent to ask the Illinois Commerce Commission (“ICC”) for an
increase in rates to help ensure that it continues to provide its 2.2 million
customers in northern Illinois with safe and reliable natural gas
service.





The
requested new rates are expected to add approximately $4.60 per month to the
average residential customer bill. If granted after ICC review, the new rates
would likely take effect in the spring of 2009. Nicor Gas said that it expected
to file for the new rates near the end of April.





A copy of
the press release issued by Nicor Gas is furnished as an exhibit to this report
and is incorporated herein by reference.








Item
9.01   Financial Statements and
Exhibits.





(d)
            Exhibits





The
following is furnished as an exhibit to this report:





99.1.   Press
release of Nicor Gas issued April 18, 2008.







Page 2




SIGNATURE





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 hereunto
duly authorized.




NICOR
INC.





Dated:  April 18,
2008                                        By:  /s/ KAREN K.
PEPPING


Karen K. Pepping


Vice President, Controller and


Principal Accounting
Officer





Page
3





Exhibit
Index




ExhibitNumber
              
              Description of
      Documents99.1.
              
              Press release of
      Nicor Gas issued April 18, 2008.