User:Juliancolton/List of counties/T-U
- Talbot County, Georgia
- Talbot County, Maryland
- Taliaferro County, Georgia
- Talladega County, Alabama
- Tallahatchie County, Mississippi
- Tallapoosa County, Alabama
- Tama County, Iowa
- Taney County, Missouri
- Tangipahoa Parish, Louisiana
- Taos County, New Mexico
- Tarrant County, Texas
- Tate County, Mississippi
- Tattnall County, Georgia
- Taylor County, Florida
- Taylor County, Georgia
- Taylor County, Iowa
- Taylor County, Kentucky
- Taylor County, Texas
- Taylor County, West Virginia
- Taylor County, Wisconsin
- Tazewell County, Illinois
- Tazewell County, Virginia
- Tehama County, California
- Telfair County, Georgia
- Teller County, Colorado
- Tensas Parish, Louisiana
- Terrebonne Parish, Louisiana
- Terrell County, Georgia
- Terrell County, Texas
- Terry County, Texas
- Teton County, Idaho
- Teton County, Montana
- Teton County, Wyoming
- Texas County, Missouri
- Texas County, Oklahoma
- Thayer County, Nebraska
- Thomas County, Georgia
- Thomas County, Kansas
- Thomas County, Nebraska
- Throckmorton County, Texas
- Thurston County, Nebraska
- Thurston County, Washington
- Tift County, Georgia
- Tillamook County, Oregon
- Tillman County, Oklahoma
- Tioga County, New York
- Tioga County, Pennsylvania
- Tippah County, Mississippi
- Tippecanoe County, Indiana
- Tipton County, Indiana
- Tipton County, Tennessee
- Tishomingo County, Mississippi
- Titus County, Texas
- Todd County, Kentucky
- Todd County, Minnesota
- Todd County, South Dakota
- Tolland County, Connecticut
- Tom Green County, Texas
- Tompkins County, New York
- Tooele County, Utah
- Toole County, Montana
- Toombs County, Georgia
- Torrance County, New Mexico
- Towner County, North Dakota
- Towns County, Georgia
- Traill County, North Dakota
- Transylvania County, North Carolina
- Traverse County, Minnesota
- Travis County, Texas
- Treasure County, Montana
- Trego County, Kansas
- Trempealeau County, Wisconsin
- Treutlen County, Georgia
- Trigg County, Kentucky
- Trimble County, Kentucky
- Trinity County, California
- Trinity County, Texas
- Tripp County, South Dakota
- Troup County, Georgia
- Trousdale County, Tennessee
- Trumbull County, Ohio
- Tucker County, West Virginia
- Tulare County, California
- Tulsa County, Oklahoma
- Tunica County, Mississippi
- Tuolumne County, California
- Turner County, Georgia
- Turner County, South Dakota
- Tuscaloosa County, Alabama
- Tuscarawas County, Ohio
- Tuscola County, Michigan
- Twiggs County, Georgia
- Twin Falls County, Idaho
- Tyler County, Texas
- Tyler County, West Virginia
- Tyrrell County, North Carolina
- Uinta County, Wyoming
- Uintah County, Utah
- Ulster County, New York
- Umatilla County, Oregon
- Unicoi County, Tennessee
- Union County, Arkansas
- Union County, Florida
- Union County, Georgia
- Union County, Illinois
- Union County, Indiana
- Union County, Iowa
- Union County, Kentucky
- Union County, Mississippi
- Union County, New Jersey
- Union County, New Mexico
- Union County, North Carolina
- Union County, Ohio
- Union County, Oregon
- Union County, Pennsylvania
- Union County, South Carolina
- Union County, South Dakota
- Union County, Tennessee
- Union Parish, Louisiana
- Upshur County, Texas
- Upshur County, West Virginia
- Upson County, Georgia
- Upton County, Texas
- Utah County, Utah
- Uvalde County, Texas
