| Rank | City | 2004 Population (Est.) | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Cheyenne | 54,709 | 0.8% |
| 2 | Casper | 50,503 | 0.5% |
| 3 | Laramie | 27,614 | 0.4% |
| 4 | Gillette | 21,882 | 2.2% |
| 5 | Rock Springs | 18,130 | -0.8% |
| 6 | Sheridan | 15,999 | 0.2% |
| 7 | Green River | 11,398 | -1.0% |
| 8 | Evanston | 11,246 | -0.7% |
| 9 | Riverton | 9,360 | 0.3% |
| 10 | Jackson | 8,918 | 0.9% |
| 11 | Cody | 8,899 | 0.0% |
| 12 | Rawlins | 8,654 | -1.4% |
| 13 | Lander | 6,851 | -0.4% |
| 14 | Torrington | 5,610 | -1.4% |
| 15 | Powell | 5,423 | -1.0% |
| 16 | Douglas | 5,334 | 0.1% |
| 17 | Worland | 4,985 | -2.1% |
| 18 | Buffalo | 4,186 | 2.2% |
| 19 | Wheatland | 3,455 | -0.7% |
| 20 | Mills | 3,408 | 2.3% |
| 21 | Newcastle | 3,205 | -0.6% |
| 22 | Thermopolis | 2,959 | -2.2% |
| 23 | Kemmerer | 2,470 | -2.3% |
| 24 | Evansville | 2,303 | 0.6% |
| 25 | Lovell | 2,274 | -1.1% |
| 26 | Glenrock | 2,255 | 0.1% |
| 27 | Lyman | 1,899 | -0.6% |
| 28 | Afton | 1,756 | -1.8% |
| 29 | Greybull | 1,738 | -1.3% |
| 30 | Saratoga | 1,699 | -0.4% |
| 31 | Pinedale | 1,482 | 1.7% |
| 32 | Wright | 1,411 | 1.3% |
| 33 | Lusk | 1,328 | -2.6% |
| 34 | Sundance | 1,207 | -0.1% |
| 35 | Basin | 1,203 | -1.0% |
| 36 | Pine Bluffs | 1,187 | 0.9% |
| 37 | Mountain View | 1,157 | -0.1% |
| 38 | Guernsey | 1,111 | -0.8% |
| 39 | Dubois | 982 | 0.3% |
| 40 | Bar Nunn | 967 | 1.1% |
| 41 | Upton | 861 | -0.6% |
| 42 | Hanna | 861 | -0.3% |
| 43 | Moorcroft | 831 | 0.2% |
| 44 | Marbleton | 828 | 1.9% |
| 45 | Ranchester | 714 | 0.6% |
| 46 | Dayton | 714 | 0.9% |
| 47 | Alpine | 711 | 8.2% |
| 48 | Diamondville | 676 | -1.9% |
| 49 | Shoshoni | 657 | 1.1% |
| 50 | Star Valley Ranch | 616 | -1.8% |
| 51 | Cowley | 565 | 0.3% |
| 52 | Byron | 540 | -0.9% |
| 53 | Lingle | 491 | -1.3% |
| 54 | Cokeville | 478 | -2.0% |
| 55 | Bear River | 469 | -0.4% |
| 56 | Rolling Hills | 459 | 0.1% |
| 57 | Big Piney | 450 | 1.7% |
| 58 | Encampment | 438 | -0.2% |
| 59 | Hulett | 431 | -0.4% |
| 60 | Midwest | 414 | 0.5% |
| 61 | Sinclair | 407 | -1.1% |
| 62 | La Barge | 406 | -1.9% |
| 63 | Hudson | 406 | -0.1% |
| 64 | Baggs | 353 | 0.5% |
| 65 | Meeteetse | 346 | -0.5% |
| 66 | Thayne | 335 | -1.5% |
| 67 | La Grange | 331 | -0.5% |
| 68 | Ten Sleep | 315 | 0.3% |
| 69 | Burns | 311 | 2.8% |
| 70 | Medicine Bow | 266 | -0.9% |
| 71 | Pine Haven | 263 | 5.5% |
| 72 | Kaycee | 263 | 1.7% |
| 73 | East Thermopolis | 258 | -1.9% |
| 74 | Wamsutter | 258 | -0.3% |
| 75 | Burlington | 245 | -0.5% |
| 76 | Rock River | 236 | 0.1% |
| 77 | Fort Laramie | 234 | -1.3% |
| 78 | Superior | 234 | -1.3% |
| 79 | Chugwater | 233 | -1.3% |
| 80 | Glendo | 224 | -0.6% |
| 81 | Frannie | 205 | -0.5% |
| 82 | Elk Mountain | 189 | -0.4% |
| 83 | Deaver | 177 | 0.2% |
| 84 | Edgerton | 171 | 0.4% |
| 85 | Pavillion | 165 | – |
| 86 | Yoder | 163 | -1.2% |
| 87 | Granger | 142 | -0.9% |
| 88 | Albin | 122 | 0.6% |
| 89 | Clearmont | 116 | 0.3% |
| 90 | Manderson | 101 | -1.0% |
| 91 | Manville | 97 | -1.7% |
| 92 | Opal | 96 | -2.0% |
| 93 | Bairoil | 94 | -1.0% |
| 94 | Dixon | 79 | – |
| 95 | Hartville | 73 | -0.9% |
| 96 | Riverside | 58 | -0.6% |
| 97 | Kirby | 52 | -1.9% |
| 98 | Van Tassell | 17 | -1.9% |
| 99 | Lost Springs | 1 | – |
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