Exhibit 21
TELEPHONE AND DATA SYSTEMS, INC.
SUBSIDIARY COMPANIES
December 31, 2022
SUBSIDIARY COMPANIES | STATE OF ORGANIZATION | ||||||||||
UScellular | |||||||||||
UNITED STATES CELLULAR CORPORATION | DELAWARE | ||||||||||
BANGOR CELLULAR TELEPHONE, L.P. | DELAWARE | ||||||||||
CALIFORNIA RURAL SERVICE AREA #1, INC. | CALIFORNIA | ||||||||||
CEDAR RAPIDS CELLULAR TELEPHONE, L.P. | DELAWARE | ||||||||||
CELLVEST, INC. | DELAWARE | ||||||||||
CENTRAL CELLULAR TELEPHONES, LTD. | ILLINOIS | ||||||||||
CHAMPLAIN CELLULAR, INC. | NEW YORK | ||||||||||
COMMUNITY CELLULAR TELEPHONE COMPANY | TEXAS | ||||||||||
CROWN POINT CELLULAR, INC. | NEW YORK | ||||||||||
DUBUQUE CELLULAR TELEPHONE, L.P. | DELAWARE | ||||||||||
HARDY CELLULAR TELEPHONE COMPANY | DELAWARE | ||||||||||
IOWA RSA # 3, INC. | DELAWARE | ||||||||||
IOWA RSA # 9, INC. | DELAWARE | ||||||||||
IOWA RSA # 12, INC. | DELAWARE | ||||||||||
JACKSONVILLE CELLULAR PARTNERSHIP | NORTH CAROLINA | ||||||||||
JACKSONVILLE CELLULAR TELEPHONE COMPANY | NORTH CAROLINA | ||||||||||
KANSAS #15 LIMITED PARTNERSHIP | DELAWARE | ||||||||||
KENOSHA CELLULAR TELEPHONE, L.P. | DELAWARE | ||||||||||
LAB465, LLC | ILLINOIS | ||||||||||
MADISON CELLULAR TELEPHONE COMPANY | WISCONSIN | ||||||||||
MAINE RSA # 1, INC. | MAINE | ||||||||||
MAINE RSA # 4, INC. | MAINE | ||||||||||
MCDANIEL CELLULAR TELEPHONE COMPANY | DELAWARE | ||||||||||
MINNESOTA INVCO OF RSA # 7, INC. | DELAWARE | ||||||||||
NEWPORT CELLULAR, INC. | NEW YORK | ||||||||||
NH #1 RURAL CELLULAR, INC. | NEW HAMPSHIRE | ||||||||||
OREGON RSA #2, INC. | OREGON | ||||||||||
PCS WISCONSIN, LLC | WISCONSIN | ||||||||||
RACINE CELLULAR TELEPHONE COMPANY | WISCONSIN | ||||||||||
TEXAS INVCO OF RSA # 6, INC. | DELAWARE | ||||||||||
TOWNSHIP CELLULAR TELEPHONE, INC. | DELAWARE | ||||||||||
UNITED STATES CELLULAR INVESTMENT CO. OF OKLAHOMA CITY, LLC. | OKLAHOMA | ||||||||||
UNITED STATES CELLULAR INVESTMENT COMPANY, LLC | DELAWARE | ||||||||||
UNITED STATES CELLULAR INVESTMENT CORPORATION OF LOS ANGELES | INDIANA | ||||||||||
UNITED STATES CELLULAR OPERATING COMPANY LLC | DELAWARE | ||||||||||
UNITED STATES CELLULAR OPERATING COMPANY OF BANGOR | MAINE | ||||||||||
UNITED STATES CELLULAR OPERATING COMPANY OF CEDAR RAPIDS | DELAWARE | ||||||||||
UNITED STATES CELLULAR OPERATING COMPANY OF CHICAGO, LLC | DELAWARE | ||||||||||
UNITED STATES CELLULAR OPERATING COMPANY OF DUBUQUE | IOWA | ||||||||||
UNITED STATES CELLULAR OPERATING COMPANY OF KNOXVILLE | TENNESSEE | ||||||||||
UNITED STATES CELLULAR OPERATING COMPANY OF MEDFORD | OREGON | ||||||||||
UNITED STATES CELLULAR OPERATING COMPANY OF YAKIMA | WASHINGTON |
USCC DISTRIBUTION CO., LLC | DELAWARE | ||||||||||
USCC EIP LLC | DELAWARE | ||||||||||
USCC FINANCIAL L.L.C. | ILLINOIS | ||||||||||
USCC MASTER NOTE TRUST | DELAWARE | ||||||||||
USCC PURCHASE, LLC | DELAWARE | ||||||||||
USCC RECEIVABLES FUNDING LLC | DELAWARE | ||||||||||
USCC SERVICES, LLC | DELAWARE | ||||||||||
USCC WIRELESS INVESTMENT, INC. | DELAWARE | ||||||||||
USCCI CORPORATION | DELAWARE | ||||||||||
USCIC OF FRESNO | CALIFORNIA | ||||||||||
USCOC NEBRASKA/KANSAS, INC. | DELAWARE | ||||||||||
USCOC NEBRASKA/KANSAS, LLC | DELAWARE | ||||||||||
USCOC OF CENTRAL ILLINOIS, LLC | ILLINOIS | ||||||||||
USCOC OF CUMBERLAND, LLC | DELAWARE | ||||||||||
USCOC OF GREATER IOWA, LLC | DELAWARE | ||||||||||
USCOC OF GREATER MISSOURI, LLC | DELAWARE | ||||||||||
USCOC OF GREATER NORTH CAROLINA, LLC | DELAWARE | ||||||||||
USCOC OF GREATER OKLAHOMA, LLC | OKLAHOMA | ||||||||||
USCOC OF JACKSONVILLE, LLC | DELAWARE | ||||||||||
USCOC OF LACROSSE, LLC | WISCONSIN | ||||||||||
USCOC OF OREGON RSA # 5, INC. | DELAWARE | ||||||||||
USCOC OF PENNSYLVANIA RSA NO. 10-B2, LLC | DELAWARE | ||||||||||
USCOC OF RICHLAND, INC. | WASHINGTON | ||||||||||
USCOC OF SOUTH CAROLINA RSA # 4, INC. | SOUTH CAROLINA | ||||||||||
USCOC OF VIRGINIA RSA # 3, INC. | VIRGINIA | ||||||||||
USCOC OF WASHINGTON-4, INC. | DELAWARE | ||||||||||
VERMONT RSA NO. 2-B2, INC. | DELAWARE | ||||||||||
WASHINGTON RSA # 5, INC. | WASHINGTON | ||||||||||
WESTELCOM CELLULAR, INC. | NEW YORK | ||||||||||
WESTERN SUB-RSA LIMITED PARTNERSHIP | DELAWARE | ||||||||||
YAKIMA MSA LIMITED PARTNERSHIP | DELAWARE | ||||||||||
TDS TELECOMMUNICATIONS | |||||||||||
TDS TELECOMMUNICATIONS LLC | DELAWARE | ||||||||||
INCUMBENT LOCAL EXCHANGE COMPANIES | |||||||||||
AMELIA TELEPHONE CORPORATION | VIRGINIA | ||||||||||
ARCADIA TELEPHONE COMPANY | OHIO | ||||||||||
ARIZONA TELEPHONE COMPANY | ARIZONA | ||||||||||
ARVIG TELEPHONE COMPANY | MINNESOTA | ||||||||||
ASOTIN TELEPHONE COMPANY | WASHINGTON | ||||||||||
BADGER TELECOM, LLC | DELAWARE | ||||||||||
BLACK EARTH TELEPHONE COMPANY, LLC | DELAWARE | ||||||||||
BLUE RIDGE TELEPHONE COMPANY | GEORGIA | ||||||||||
BONDUEL TELEPHONE COMPANY, LLC | DELAWARE | ||||||||||
BRIDGE WATER TELEPHONE COMPANY | MINNESOTA | ||||||||||
BURLINGTON, BRIGHTON & WHEATLAND TELEPHONE COMPANY, LLC | DELAWARE | ||||||||||
BUTLER TELEPHONE COMPANY, INC. | ALABAMA | ||||||||||
CALHOUN CITY TELEPHONE COMPANY, INC. | MISSISSIPPI | ||||||||||
CAMDEN TELEPHONE AND TELEGRAPH COMPANY, INC. | GEORGIA | ||||||||||
CAMDEN TELEPHONE COMPANY, INC. | INDIANA |
CENTRAL STATE TELEPHONE COMPANY, LLC | DELAWARE | ||||||||||
CHATHAM TELEPHONE COMPANY | MICHIGAN | ||||||||||
COBBOSSEECONTEE TELEPHONE COMPANY | MAINE | ||||||||||
COMMUNICATION CORPORATION OF MICHIGAN | MICHIGAN | ||||||||||
COMMUNICATIONS CORPORATION OF INDIANA | INDIANA | ||||||||||
COMMUNICATIONS CORPORATION OF SOUTHERN INDIANA | INDIANA | ||||||||||
CONCORD TELEPHONE EXCHANGE, INC. | TENNESSEE | ||||||||||
CONTINENTAL TELEPHONE COMPANY | OHIO | ||||||||||
DELTA COUNTY TELE-COMM, INC. | COLORADO | ||||||||||
DEPOSIT TELEPHONE COMPANY, INC. | NEW YORK | ||||||||||
DICKEYVILLE TELEPHONE, LLC | DELAWARE | ||||||||||
EASTCOAST TELECOM OF WISCONSIN, LLC | DELAWARE | ||||||||||
EDWARDS TELEPHONE COMPANY, INC. | NEW YORK | ||||||||||
GRANTLAND TELECOM, LLC | DELAWARE | ||||||||||
HAMPDEN TELEPHONE COMPANY | MAINE | ||||||||||
HAPPY VALLEY TELEPHONE COMPANY | CALIFORNIA | ||||||||||
HARTLAND & ST. ALBANS TELEPHONE COMPANY | MAINE | ||||||||||
HOLLIS TELEPHONE COMPANY, INC. | NEW HAMPSHIRE | ||||||||||
HOME TELEPHONE COMPANY, INC. | INDIANA | ||||||||||
HORNITOS TELEPHONE CO. | CALIFORNIA | ||||||||||
HUMPHREYS COUNTY TELEPHONE COMPANY | TENNESSEE | ||||||||||
ISLAND TELEPHONE COMPANY | MICHIGAN | ||||||||||
KEARSARGE TELEPHONE COMPANY | NEW HAMPSHIRE | ||||||||||
LESLIE COUNTY TELEPHONE COMPANY | KENTUCKY | ||||||||||
LEWIS RIVER TELEPHONE COMPANY, INC. | WASHINGTON | ||||||||||
LEWISPORT TELEPHONE COMPANY | KENTUCKY | ||||||||||
LITTLE MIAMI COMMUNICATIONS CORPORATION | OHIO | ||||||||||
LUDLOW TELEPHONE COMPANY | VERMONT | ||||||||||
MAHANOY & MAHANTANGO TELEPHONE COMPANY | PENNSYLVANIA | ||||||||||
MCCLELLANVILLE TELEPHONE COMPANY, INC. | SOUTH CAROLINA | ||||||||||
MCDANIEL TELEPHONE COMPANY | WASHINGTON | ||||||||||
MERRIMACK COUNTY TELEPHONE COMPANY | NEW HAMPSHIRE | ||||||||||
MID-AMERICA TELEPHONE, LLC | OKLAHOMA | ||||||||||
MID-PLAINS TELEPHONE, LLC | DELAWARE | ||||||||||
MID-STATE TELEPHONE COMPANY | MINNESOTA | ||||||||||
MIDWAY TELEPHONE COMPANY, LLC | DELAWARE | ||||||||||
MOSINEE TELEPHONE COMPANY, LLC | DELAWARE | ||||||||||
MT. VERNON TELEPHONE COMPANY, LLC | DELAWARE | ||||||||||
MYRTLE TELEPHONE COMPANY, INC. | MISSISSIPPI | ||||||||||
NELSON-BALL GROUND TELEPHONE COMPANY | GEORGIA | ||||||||||
NEW CASTLE TELEPHONE COMPANY | VIRGINIA | ||||||||||
NORTHFIELD TELEPHONE COMPANY | VERMONT | ||||||||||
NORWAY TELEPHONE COMPANY, INC. | SOUTH CAROLINA | ||||||||||
OAKMAN TELEPHONE COMPANY, INC. | ALABAMA | ||||||||||
OAKWOOD TELEPHONE COMPANY | OHIO | ||||||||||
OKLAHOMA COMMUNICATION SYSTEMS, LLC | OKLAHOMA | ||||||||||
PEOPLES TELEPHONE COMPANY, INC. | ALABAMA | ||||||||||
PERKINSVILLE TELEPHONE COMPANY, INC. | VERMONT | ||||||||||
PORT BYRON TELEPHONE COMPANY | NEW YORK | ||||||||||
POTLATCH TELEPHONE COMPANY | IDAHO | ||||||||||
QUINCY TELEPHONE COMPANY | FLORIDA |
RIVERSIDE TELECOM, LLC | DELAWARE | ||||||||||
S & W TELEPHONE COMPANY, INC. | INDIANA | ||||||||||
SALEM TELEPHONE COMPANY | KENTUCKY | ||||||||||
SCANDINAVIA TELEPHONE COMPANY, LLC | DELAWARE | ||||||||||
SHIAWASSEE TELEPHONE COMPANY | MICHIGAN | ||||||||||
SOMERSET TELEPHONE COMPANY | MAINE | ||||||||||
SOUTHEAST MISSISSIPPI TELEPHONE COMPANY, INC. | MISSISSIPPI | ||||||||||
SOUTHEAST TELEPHONE CO. OF WISCONSIN, LLC | DELAWARE | ||||||||||
SOUTHWESTERN TELEPHONE COMPANY | ARIZONA | ||||||||||
ST. STEPHEN TELEPHONE COMPANY | SOUTH CAROLINA | ||||||||||
STOCKBRIDGE & SHERWOOD TELEPHONE COMPANY, LLC. | DELAWARE | ||||||||||
STRASBURG TELEPHONE COMPANY | COLORADO | ||||||||||
SUGAR VALLEY TELEPHONE COMPANY | PENNSYLVANIA | ||||||||||
TELLICO TELEPHONE COMPANY, INC. | TENNESSEE | ||||||||||
TENNESSEE TELEPHONE COMPANY | TENNESSEE | ||||||||||
TENNEY TELEPHONE COMPANY, LLC | DELAWARE | ||||||||||
THE FARMERS TELEPHONE COMPANY, LLC | DELAWARE | ||||||||||
THE HOME TELEPHONE COMPANY OF PITTSBORO, INC. | INDIANA | ||||||||||
THE ISLAND TELEPHONE COMPANY | MAINE | ||||||||||
THE MERCHANTS AND FARMERS TELEPHONE COMPANY | INDIANA | ||||||||||
THE STATE LONG DISTANCE TELEPHONE COMPANY, LLC | DELAWARE | ||||||||||
THE VANLUE TELEPHONE COMPANY | OHIO | ||||||||||
THE WEST PENOBSCOT TELEPHONE & TELEGRAPH COMPANY | MAINE | ||||||||||
TIPTON TELEPHONE COMPANY, INC. | INDIANA | ||||||||||
TOWNSHIP TELEPHONE COMPANY, INC. | NEW YORK | ||||||||||
TRI-COUNTY TELEPHONE COMPANY, INC. | INDIANA | ||||||||||
UNION TELEPHONE COMPANY | NEW HAMPSHIRE | ||||||||||
UTELCO, LLC | DELAWARE | ||||||||||
VERNON TELEPHONE COMPANY, INC. | NEW YORK | ||||||||||
VIRGINIA TELEPHONE COMPANY | VIRGINIA | ||||||||||
WARREN TELEPHONE COMPANY | MAINE | ||||||||||
WAUNAKEE TELEPHONE COMPANY, LLC | DELAWARE | ||||||||||
WEST POINT TELEPHONE COMPANY, INCORPORATED | INDIANA | ||||||||||
WILLISTON TELEPHONE COMPANY | SOUTH CAROLINA | ||||||||||
WILTON TELEPHONE COMPANY, INC. | NEW HAMPSHIRE | ||||||||||
WINSTED TELEPHONE COMPANY | MINNESOTA | ||||||||||
WINTERHAVEN TELEPHONE COMPANY | CALIFORNIA | ||||||||||
WOLVERINE TELEPHONE COMPANY | MICHIGAN | ||||||||||
OTHER COMPANIES | |||||||||||
INTERLINX COMMUNICATION, LLC | DELAWARE | ||||||||||
TDS BROADBAND LLC | DELAWARE | ||||||||||
TDS BROADBAND SERVICE LLC | DELAWARE | ||||||||||
TDS LONG DISTANCE CORPORATION | DELAWARE | ||||||||||
TDS METROCOM, LLC | DELAWARE | ||||||||||
TDS PURCO LLC | DELAWARE | ||||||||||
TDS TELECOM SERVICE LLC | IOWA | ||||||||||
TONAQUINT NETWORKS, LLC | DELAWARE | ||||||||||
TRI-COUNTY COMMUNICATIONS CORPORATION | INDIANA | ||||||||||
ZOLO BROADCASTING LLC | DELAWARE | ||||||||||
TDS GROUP | |||||||||||
AFFILIATE FUND | DELAWARE | ||||||||||
AIRADIGM COMMUNICATIONS, INC. | WISCONSIN | ||||||||||
NATIONAL TELEPHONE & TELEGRAPH COMPANY | DELAWARE | ||||||||||
ONENECK DATA CENTER HOLDINGS LLC | DELAWARE | ||||||||||
ONENECK IT SOLUTIONS LLC | DELAWARE | ||||||||||
SUTTLE-STRAUS, INC. | WISCONSIN |