| Total Population and Change: 2010 and 2000 | ||||
| Area Name | Population | Change | ||
| 2010 | 2000 | Number | % | |
| WYOMING | 563,626 | 493,782 | 69,844 | 14.1 |
| Albany County | 36,299 | 32,014 | 4,285 | 13.4 |
| Laramie | 30,816 | 27,204 | 3,612 | 13.3 |
| Rock River | 245 | 235 | 10 | 4.3 |
| Big Horn County | 11,668 | 11,461 | 207 | 1.8 |
| Basin | 1,285 | 1,238 | 47 | 3.8 |
| Burlington | 288 | 250 | 38 | 15.2 |
| Byron | 593 | 557 | 36 | 6.5 |
| Cowley | 655 | 560 | 95 | 17.0 |
| Deaver | 178 | 177 | 1 | 0.6 |
| Frannie (pt.) | 138 | 180 | -42 | -23.3 |
| Greybull | 1,847 | 1,815 | 32 | 1.8 |
| Lovell | 2,360 | 2,361 | -1 | 0.0 |
| Manderson | 114 | 104 | 10 | 9.6 |
| Campbell County | 46,133 | 33,698 | 12,435 | 36.9 |
| Gillette | 29,087 | 19,646 | 9,441 | 48.1 |
| Wright | 1,807 | 1,347 | 460 | 34.1 |
| Carbon County | 15,885 | 15,639 | 246 | 1.6 |
| Baggs | 440 | 348 | 92 | 26.4 |
| Dixon | 97 | 79 | 18 | 22.8 |
| Elk Mountain | 191 | 192 | -1 | -0.5 |
| Encampment | 450 | 443 | 7 | 1.6 |
| Hanna | 841 | 873 | -32 | -3.7 |
| Medicine Bow | 284 | 274 | 10 | 3.6 |
| Rawlins | 9,259 | 9,006 | 253 | 2.8 |
| Riverside | 52 | 59 | -7 | -11.9 |
| Saratoga | 1,690 | 1,726 | -36 | -2.1 |
| Sinclair | 433 | 423 | 10 | 2.4 |
| Converse County | 13,833 | 12,052 | 1,781 | 14.8 |
| Douglas | 6,120 | 5,288 | 832 | 15.7 |
| Glenrock | 2,576 | 2,231 | 345 | 15.5 |
| Lost Springs | 4 | 1 | 3 | 300.0 |
| Rolling Hills | 440 | 449 | -9 | -2.0 |
| Crook County | 7,083 | 5,887 | 1,196 | 20.3 |
| Hulett | 383 | 408 | -25 | -6.1 |
| Moorcroft | 1,009 | 807 | 202 | 25.0 |
| Pine Haven | 490 | 222 | 268 | 120.7 |
| Sundance | 1,182 | 1,161 | 21 | 1.8 |
| Fremont County | 40,123 | 35,804 | 4,319 | 12.1 |
| Dubois | 971 | 964 | 7 | 0.7 |
| Hudson | 458 | 407 | 51 | 12.5 |
| Lander | 7,487 | 6,867 | 620 | 9.0 |
| Pavillion | 231 | 165 | 66 | 40.0 |
| Riverton | 10,615 | 9,310 | 1,305 | 14.0 |
| Shoshoni | 649 | 635 | 14 | 2.2 |
| Goshen County | 13,249 | 12,538 | 711 | 5.7 |
| Fort Laramie | 230 | 243 | -13 | -5.3 |
| La Grange | 448 | 332 | 116 | 34.9 |
| Lingle | 468 | 510 | -42 | -8.2 |
| Torrington | 6,501 | 5,776 | 725 | 12.6 |
| Yoder | 151 | 169 | -18 | -10.7 |
| Hot Springs County | 4,812 | 4,882 | -70 | -1.4 |
| E Thermopolis | 254 | 274 | -20 | -7.3 |
| Kirby | 92 | 57 | 35 | 61.4 |
| Thermopolis | 3,009 | 3,172 | -163 | -5.1 |
| Johnson County | 8,569 | 7,075 | 1,494 | 21.1 |
| Buffalo | 4,585 | 3,900 | 685 | 17.6 |
| Kaycee | 263 | 249 | 14 | 5.6 |
| Laramie County | 91,738 | 81,607 | 10,131 | 12.4 |
| Albin | 181 | 120 | 61 | 50.8 |
| Burns | 301 | 285 | 16 | 5.6 |
| Cheyenne | 59,466 | 53,011 | 6,455 | 12.2 |
| Pine Bluffs | 1,129 | 1,153 | -24 | -2.1 |
| Lincoln County | 18,106 | 14,573 | 3,533 | 24.2 |
| Afton | 1,911 | 1,818 | 93 | 5.1 |
| Alpine | 828 | 550 | 278 | 50.5 |
| Cokeville | 535 | 506 | 29 | 5.7 |
| Diamondville | 737 | 716 | 21 | 2.9 |
| Kemmerer | 2,656 | 2,651 | 5 | 0.2 |
| La Barge | 551 | 431 | 120 | 27.8 |
| Opal | 96 | 102 | -6 | -5.9 |
| Star Valley Ranch* | 1,503 | - | - | - |
| Thayne | 366 | 341 | 25 | 7.3 |
| Natrona County | 75,450 | 66,533 | 8,917 | 13.4 |
| Bar Nunn | 2,213 | 936 | 1,277 | 136.4 |
| Casper | 55,316 | 49,644 | 5,672 | 11.4 |
| Edgerton | 195 | 169 | 26 | 15.4 |
| Evansville | 2,544 | 2,255 | 289 | 12.8 |
| Midwest | 404 | 408 | -4 | -1.0 |
| Mills | 3,461 | 2,591 | 870 | 33.6 |
| Niobrara County | 2,484 | 2,407 | 77 | 3.2 |
| Lusk | 1,567 | 1,447 | 120 | 8.3 |
| Manville | 95 | 101 | -6 | -5.9 |
| Van Tassell | 15 | 18 | -3 | -16.7 |
| Park County | 28,205 | 25,786 | 2,419 | 9.4 |
| Cody | 9,520 | 8,835 | 685 | 7.8 |
| Frannie (pt.) | 19 | 29 | -10 | -34.5 |
| Meeteetse | 327 | 351 | -24 | -6.8 |
| Powell | 6,314 | 5,373 | 941 | 17.5 |
| Platte County | 8,667 | 8,807 | -140 | -1.6 |
| Chugwater | 212 | 244 | -32 | -13.1 |
| Glendo | 205 | 229 | -24 | -10.5 |
| Guernsey | 1,147 | 1,147 | 0 | 0.0 |
| Hartville | 62 | 76 | -14 | -18.4 |
| Wheatland | 3,627 | 3,548 | 79 | 2.2 |
| Sheridan County | 29,116 | 26,560 | 2,556 | 9.6 |
| Clearmont | 142 | 115 | 27 | 23.5 |
| Dayton | 757 | 678 | 79 | 11.7 |
| Ranchester | 855 | 701 | 154 | 22.0 |
| Sheridan | 17,444 | 15,804 | 1,640 | 10.4 |
| Sublette County | 10,247 | 5,920 | 4,327 | 73.1 |
| Big Piney | 552 | 408 | 144 | 35.3 |
| Marbleton | 1,094 | 720 | 374 | 51.9 |
| Pinedale | 2,030 | 1,412 | 618 | 43.8 |
| Sweetwater County | 43,806 | 37,613 | 6,193 | 16.5 |
| Bairoil | 106 | 97 | 9 | 9.3 |
| Granger | 139 | 146 | -7 | -4.8 |
| Green River | 12,515 | 11,808 | 707 | 6.0 |
| Rock Springs | 23,036 | 18,708 | 4,328 | 23.1 |
| Superior | 336 | 244 | 92 | 37.7 |
| Wamsutter | 451 | 261 | 190 | 72.8 |
| Teton County | 21,294 | 18,251 | 3,043 | 16.7 |
| Jackson | 9,577 | 8,647 | 930 | 10.8 |
| Uinta County | 21,118 | 19,742 | 1,376 | 7.0 |
| Bear River* | 518 | - | - | - |
| Evanston | 12,359 | 11,507 | 852 | 7.4 |
| Lyman | 2,115 | 1,938 | 177 | 9.1 |
| Mountain View | 1,286 | 1,153 | 133 | 11.5 |
| Washakie County | 8,533 | 8,289 | 244 | 2.9 |
| Ten Sleep | 260 | 304 | -44 | -14.5 |
| Worland | 5,487 | 5,250 | 237 | 4.5 |
| Weston County | 7,208 | 6,644 | 564 | 8.5 |
| Newcastle | 3,532 | 3,249 | 283 | 8.7 |
| Upton | 1,100 | 872 | 228 | 26.1 |
| *Town was incorporated after 2000. | ||||
| Note: The officially revised census population figures are reflected in this table. | ||||
| Source: U.S. Bureau of the Census | ||||