EXHIBIT 5



                                 SIDLEY & AUSTIN
                            ONE FIRST NATIONAL PLAZA
                             CHICAGO, ILLINOIS 60603




                                January 8, 1997




United States Cellular Corporation
Suite 700
8410 West Bryn Mawr Avenue
Chicago, Illinois  60631

                  Re:      United States Cellular Corporation
                           Registration Statement on Form S-8

Gentlemen:

                  We are  counsel  to  United  States  Cellular  Corporation,  a
Delaware  corporation  (the  "Company"),  and have  represented  the  Company in
connection  with the  Registration  Statement  on Form  S-8  (the  "Registration
Statement")  being  filed  by the  Company  with  the  Securities  and  Exchange
Commission under the Securities Act of 1933, as amended (the "Securities  Act"),
with respect to the offer and sale of 10,000 common shares,  par value $1.00 per
share (the "Shares"),  of the Company  pursuant to the United  States  Cellular
Corporation Compensation Plan for Non-Employee Directors (the "Plan").

                  In rendering this opinion,  we have examined and relied upon a
copy  of  the  Plan  and  the  Registration  Statement,  including  the  related
Prospectus  dated  the date  hereof.  We have  also  examined  and  relied  upon
originals,  or  copies  of  originals  certified  to our  satisfaction,  of such
agreements,   documents,  certificates  and  other  statements  of  governmental
officials and other  instruments,  and examined  such  questions of law and have
satisfied  ourselves as to such matters of fact, as we have considered  relevant
and necessary as a basis for this opinion.  We have assumed the  authenticity of
all documents  submitted to us as originals,  the genuineness of all signatures,
the legal capacity of all natural  persons and the conformity  with the original
documents of any copies thereof submitted to us for our examination.

                  Based on the foregoing, we are of the opinion that:

                  1.       The Company is duly incorporated and validly existing
under the laws of the State of Delaware; and

                  2.  Each  Share  will  be  legally  issued,   fully  paid  and
nonassessable  when: (i) the Registration  Statement shall have become effective
under the  Securities  Act; (ii) such Share shall have been duly issued and sold
in the manner  contemplated  by the Plan;  and (iii) a certificate  representing
such Share shall have been duly executed,  countersigned and registered and duly
delivered to the purchaser  thereof against payment of the agreed  consideration
therefor (not less than the par value thereof) in accordance with the Plan.

                  We do not find it  necessary  for the purposes of this opinion
to cover,  and  accordingly we express no opinion as to, the  application of the
securities or "Blue Sky" laws of the various states to the sale of the Shares.



United States Cellular Corporation
January 8, 1997
Page 2

                  This opinion is limited to the Securities Act and the Delaware
General Corporation Law.

                  The Company is controlled by Telephone and Data Systems,  Inc.
("TDS") and TDS is controlled by a voting trust.  Walter C.D. Carlson, a trustee
and  beneficiary  of the voting  trust and a director  of TDS,  the  Company and
certain other  subsidiaries  of TDS,  Michael G. Hron,  the Secretary of TDS and
certain  subsidiaries of TDS, William S. DeCarlo, the Assistant Secretary of TDS
and certain  subsidiaries  of TDS,  Stephen P.  Fitzell,  the  Secretary  of the
Company  and certain  other  subsidiaries  of TDS,  and Sherry S.  Treston,  the
Assistant  Secretary of the Company and certain other  subsidiaries  of TDS, are
partners of this Firm.

                  We hereby  consent to the filing of this opinion as an exhibit
to the  Registration  Statement  and to all  references to our Firm in or made a
part of the Registration Statement, including the related Prospectus.

                                Very truly yours,



                                SIDLEY & AUSTIN