| Terrebonne | 112,000 | Houma | Louisiana | New Orleans-Baton Rouge, LA | View → |
| Terrell | 800 | Sanderson | Texas | El Paso-Odessa, TX | View → |
| Terrell | 8,800 | Dawson | Georgia | Macon-Columbus, GA | View → |
| Terry | 11,500 | Brownfield | Texas | Lubbock-Abilene, TX | View → |
| Teton | 12,000 | Driggs | Idaho | Boise-Pocatello, ID | View → |
| Teton | 24,000 | Jackson | Wyoming | Boise-Pocatello, ID | View → |
| Teton | 6,100 | Choteau | Montana | Missoula-Billings-Butte, MT | View → |
| Texas | 21,000 | Guymon | Oklahoma | Amarillo, TX | View → |
| Texas | 20,000 | Houston | Missouri | Springfield, MO | View → |
| Thayer | 5,000 | Hebron | Nebraska | Lincoln, NE | View → |
| Thomas | 46,000 | Thomasville | Georgia | Jacksonville-Tallahassee, FL | View → |
| Thomas | 800 | Thedford | Nebraska | Lincoln, NE | View → |
| Thomas | 7,900 | Colby | Kansas | Wichita, KS | View → |
| Throckmorton | 1,500 | Throckmorton | Texas | Wichita Falls, TX | View → |
| Thurston | 7,000 | Pender | Nebraska | Omaha, NE-Sioux City, IA | View → |
| Thurston | 320,000 | Olympia | Washington | Seattle, WA | View → |
| Tift | 42,000 | Tifton | Georgia | Macon-Columbus, GA | View → |
| Tillamook | 27,000 | Tillamook | Oregon | Portland, OR | View → |
| Tillman | 7,300 | Frederick | Oklahoma | Wichita Falls, TX | View → |
| Tioga | 47,000 | Owego | New York | Scranton, PA-Binghamton, NY | View → |
| Tioga | 40,600 | Wellsboro | Pennsylvania | Scranton, PA-Binghamton, NY | View → |
| Tippah | 22,000 | Ripley | Mississippi | Memphis, TN | View → |
| Tippecanoe | 200,000 | Lafayette | Indiana | Indianapolis-Fort Wayne, IN | View → |
| Tipton | 15,500 | Tipton | Indiana | Indianapolis-Fort Wayne, IN | View → |
| Tipton | 61,000 | Covington | Tennessee | Memphis, TN | View → |
| Tishomingo | 19,000 | Iuka | Mississippi | Tupelo-Meridian-Greenwood, MS | View → |
| Titus | 32,000 | Mount Pleasant | Texas | Shreveport, LA | View → |
| Todd | 25,000 | Long Prairie | Minnesota | Minneapolis-St. Paul, MN | View → |
| Todd | 12,400 | Elkton | Kentucky | Nashville, TN | View → |
| Todd | 10,300 | Mission | South Dakota | Sioux Falls-Rapid City, SD | View → |
| Tolland | 149,800 | Vernon | Connecticut | Hartford, CT-Providence, RI | View → |
| Tom Green | 120,000 | San Angelo | Texas | Lubbock-Abilene, TX | View → |
| Tompkins | 102,000 | Ithaca | New York | Buffalo-Rochester-Syracuse, NY | View → |
| Tooele | 76,000 | Tooele | Utah | Salt Lake City, UT | View → |
| Toole | 4,900 | Shelby | Montana | Missoula-Billings-Butte, MT | View → |
| Toombs | 27,000 | Vidalia | Georgia | Savannah-Augusta, GA | View → |
| Torrance | 15,000 | Estancia | New Mexico | Albuquerque, NM | View → |
| Towner | 2,200 | Cando | North Dakota | Fargo, ND | View → |
| Towns | 12,000 | Hiawassee | Georgia | Atlanta, GA | View → |
| Traill | 8,300 | Hillsboro | North Dakota | Fargo, ND | View → |
| Transylvania | 35,000 | Brevard | North Carolina | Greenville, SC-Asheville, NC | View → |
| Traverse | 3,300 | Wheaton | Minnesota | Minneapolis-St. Paul, MN | View → |
| Travis | 1,400,000 | Austin | Texas | Austin-Waco, TX | View → |
| Treasure | 700 | Hysham | Montana | Missoula-Billings-Butte, MT | View → |
| Trego | 2,800 | WaKeeney | Kansas | Wichita, KS | View → |
| Trempealeau | 29,500 | Whitehall | Wisconsin | Madison-La Crosse, WI | View → |
| Treutlen | 7,000 | Soperton | Georgia | Macon-Columbus, GA | View → |
| Trigg | 15,000 | Cadiz | Kentucky | Nashville, TN | View → |
| Trimble | 8,600 | Bedford | Kentucky | Louisville, KY-Evansville, IN | View → |
| Trinity | 14,000 | Trinity | Texas | Houston, TX | View → |
