| Rank | City | 2003 Population (Est.) | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Cheyenne | 54,103 | 0.6% |
| 2 | Casper | 50,084 | 0.4% |
| 3 | Laramie | 27,504 | 0.4% |
| 4 | Gillette | 21,682 | 2.9% |
| 5 | Rock Springs | 18,257 | -0.9% |
| 6 | Sheridan | 15,991 | 0.3% |
| 7 | Green River | 11,502 | -1.1% |
| 8 | Evanston | 11,340 | -0.6% |
| 9 | Riverton | 9,336 | 0.3% |
| 10 | Cody | 8,841 | -0.3% |
| 11 | Jackson | 8,806 | 0.7% |
| 12 | Rawlins | 8,688 | -1.9% |
| 13 | Lander | 6,881 | -0.3% |
| 14 | Torrington | 5,672 | -1.5% |
| 15 | Powell | 5,415 | -1.5% |
| 16 | Douglas | 5,350 | 0.2% |
| 17 | Worland | 5,046 | -2.5% |
| 18 | Buffalo | 4,076 | 1.9% |
| 19 | Wheatland | 3,505 | -0.3% |
| 20 | Mills | 3,371 | 3.0% |
| 21 | Newcastle | 3,214 | -0.8% |
| 22 | Thermopolis | 3,052 | -1.7% |
| 23 | Kemmerer | 2,515 | -2.5% |
| 24 | Lovell | 2,294 | -1.3% |
| 25 | Evansville | 2,291 | 0.7% |
| 26 | Glenrock | 2,254 | 0.1% |
| 27 | Lyman | 1,914 | -0.5% |
| 28 | Afton | 1,780 | -2.0% |
| 29 | Greybull | 1,760 | -1.3% |
| 30 | Saratoga | 1,709 | -0.3% |
| 31 | Pinedale | 1,436 | 1.0% |
| 32 | Wright | 1,420 | 2.3% |
| 33 | Lusk | 1,335 | -3.6% |
| 34 | Basin | 1,218 | -0.9% |
| 35 | Sundance | 1,216 | 0.2% |
| 36 | Pine Bluffs | 1,169 | 0.6% |
| 37 | Mountain View | 1,161 | -0.0% |
| 38 | Guernsey | 1,133 | -0.3% |
| 39 | Dubois | 982 | 0.5% |
| 40 | Bar Nunn | 955 | 1.0% |
| 41 | Upton | 861 | -0.9% |
| 42 | Hanna | 861 | -0.5% |
| 43 | Moorcroft | 820 | -0.4% |
| 44 | Marbleton | 807 | 1.5% |
| 45 | Ranchester | 715 | 0.9% |
| 46 | Dayton | 698 | 0.2% |
| 47 | Diamondville | 688 | -1.9% |
| 48 | Shoshoni | 661 | 2.0% |
| 49 | Alpine | 651 | 7.6% |
| 50 | Star Valley Ranch | 622 | -2.3% |
| 51 | Cowley | 566 | 0.5% |
| 52 | Byron | 547 | -0.7% |
| 53 | Lingle | 496 | -1.4% |
| 54 | Cokeville | 487 | -2.1% |
| 55 | Bear River | 471 | -0.4% |
| 56 | Rolling Hills | 458 | – |
| 57 | Big Piney | 440 | 1.4% |
| 58 | Encampment | 435 | -0.7% |
| 59 | Hulett | 431 | -0.6% |
| 60 | La Barge | 413 | -2.0% |
| 61 | Midwest | 410 | 0.2% |
| 62 | Sinclair | 410 | -1.3% |
| 63 | Hudson | 406 | -0.1% |
| 64 | Baggs | 353 | 0.7% |
| 65 | Meeteetse | 347 | -0.6% |
| 66 | Thayne | 339 | -1.7% |
| 67 | La Grange | 331 | -0.7% |
| 68 | Ten Sleep | 313 | 0.2% |
| 69 | Burns | 294 | 1.4% |
| 70 | Medicine Bow | 268 | -0.9% |
| 71 | East Thermopolis | 265 | -1.5% |
| 72 | Wamsutter | 259 | -0.2% |
| 73 | Kaycee | 259 | 1.8% |
| 74 | Burlington | 246 | -0.6% |
| 75 | Pine Haven | 239 | 3.3% |
| 76 | Chugwater | 238 | -0.8% |
| 77 | Fort Laramie | 237 | -1.2% |
| 78 | Superior | 237 | -1.2% |
| 79 | Rock River | 236 | 0.2% |
| 80 | Glendo | 227 | -0.2% |
| 81 | Frannie | 206 | -0.5% |
| 82 | Elk Mountain | 187 | -1.1% |
| 83 | Deaver | 175 | -0.3% |
| 84 | Edgerton | 170 | 0.3% |
| 85 | Pavillion | 166 | 0.3% |
| 86 | Yoder | 165 | -1.2% |
| 87 | Granger | 144 | -0.7% |
| 88 | Albin | 121 | 0.4% |
| 89 | Clearmont | 115 | – |
| 90 | Manderson | 102 | -1.0% |
| 91 | Opal | 98 | -2.0% |
| 92 | Manville | 98 | -2.0% |
| 93 | Bairoil | 95 | -1.0% |
| 94 | Dixon | 79 | – |
| 95 | Hartville | 74 | -0.7% |
| 96 | Riverside | 58 | -0.9% |
| 97 | Kirby | 53 | -1.8% |
| 98 | Van Tassell | 17 | -2.8% |
| 99 | Lost Springs | 1 | – |
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