EXHIBIT 99.1


For Immediate Release         Contact:  Kathleen Bruegenhemke
                     Senior Vice President, Investor Relations
                      TEL: 573.761.6100   FAX: 573.761.6272

               EXCHANGE NATIONAL BANCSHARES, INC.
              OF JEFFERSON CITY, MISSOURI, ACQUIRES
                 CITIZENS STATE BANK OF CALHOUN

          JEFFERSON CITY, MO, May 9, 2000 - On May 4, 2000,
Exchange National Bancshares, Inc. (OTC: EXJF) acquired Citizens
State Bank of Calhoun, a Missouri state-chartered bank with total
assets of approximately $70 million.  The acquisition was
accomplished by merging Citizens State Bank into Union State Bank
& Trust of Clinton, a subsidiary of Exchange National Bancshares.
The merged depository institution has been renamed "Citizens
Union State Bank & Trust."  In the acquisition, the shareholders
of Calhoun Bancshares, Inc. (the parent company of Citizens State
Bank) were paid approximately $14 million in cash for their
shares.

          The acquisition and merger were announced today by
Donald L. Campbell, Chairman of the Board and CEO of Exchange
National Bancshares, Inc.  "The acquisition of Citizens State
Bank fits well within our strategy to expand our base in and near
existing markets where we can do so through the acquisition of
quality, well managed banks,"  Mr. Campbell said.  "We are
particularly enthused about adding the fine staff of the Citizens
State Bank to that of Union State Bank & Trust to create a strong
locally managed bank for the benefit of the communities we
serve."

          Prior to the merger, Union State Bank & Trust had four
facilities in Clinton, Missouri, one facility in Osceola,
Missouri, and one facility in Collins, Missouri. Citizens State
Bank had one facility in Clinton and one facility in Calhoun,
Missouri.

          Upon the consummation of the merger, James E. Smith was
named Chairman of the Board and Chief Executive Officer of
Citizens Union State Bank & Trust and Robert Wheeler was named
its President.  Prior to the merger, Mr. Wheeler served as
President of Citizens State Bank.  The Board of Directors of
Citizens Union State Bank & Trust will consist of individuals who
were members of the Board of Directors of Union State Bank &
Trust or Citizens State Bank prior to the merger.

          Exchange National Bancshares, a bank holding company
headquartered in Jefferson City, Missouri, is the parent company
of Citizens Union State Bank & Trust, The Exchange National Bank
of Jefferson City and Osage Valley Bank.  As of March 31, 2000,
Exchange National Bancshares had total consolidated assets of
approximately $545 million, total deposits of approximately $430
million and total shareholders equity of approximately $57
million.

Statements made in this press release that suggest Exchange
National Bancshares' or management's intentions, hopes, beliefs,
expectations, or predictions of the future include "forward-
looking statements" within the meaning of Section 21E of the
Securities and Exchange Act of 1934, as amended.  It is important
to note that actual results could differ materially from those
projected in such forward-looking statements.  Additional
information concerning factors that could cause actual results to
differ materially from those projected in such forward-looking
statements is contained from time to time in the company's
quarterly and annual reports filed with the Securities and
Exchange Commission.

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