| Rank | City | 2005 Population (Est.) | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Cheyenne | 55,461 | 0.9% |
| 2 | Casper | 50,905 | 0.6% |
| 3 | Laramie | 27,798 | 0.5% |
| 4 | Gillette | 21,987 | 1.8% |
| 5 | Rock Springs | 18,294 | -0.4% |
| 6 | Sheridan | 16,114 | 0.3% |
| 7 | Green River | 11,495 | -0.6% |
| 8 | Evanston | 11,215 | -0.6% |
| 9 | Riverton | 9,322 | 0.1% |
| 10 | Jackson | 9,085 | 1.1% |
| 11 | Cody | 8,938 | 0.1% |
| 12 | Rawlins | 8,652 | -1.0% |
| 13 | Lander | 6,859 | -0.3% |
| 14 | Torrington | 5,579 | -1.2% |
| 15 | Powell | 5,412 | -0.8% |
| 16 | Douglas | 5,388 | 0.3% |
| 17 | Worland | 4,943 | -1.8% |
| 18 | Buffalo | 4,199 | 1.7% |
| 19 | Wheatland | 3,460 | -0.5% |
| 20 | Mills | 3,420 | 1.8% |
| 21 | Newcastle | 3,185 | -0.6% |
| 22 | Thermopolis | 2,926 | -1.9% |
| 23 | Kemmerer | 2,458 | -1.8% |
| 24 | Evansville | 2,312 | 0.6% |
| 25 | Lovell | 2,287 | -0.7% |
| 26 | Glenrock | 2,254 | 0.0% |
| 27 | Lyman | 1,895 | -0.5% |
| 28 | Afton | 1,758 | -1.3% |
| 29 | Greybull | 1,755 | -0.7% |
| 30 | Saratoga | 1,695 | -0.4% |
| 31 | Pinedale | 1,546 | 2.3% |
| 32 | Wright | 1,403 | 0.8% |
| 33 | Lusk | 1,335 | -1.8% |
| 34 | Basin | 1,210 | -0.6% |
| 35 | Sundance | 1,199 | -0.2% |
| 36 | Pine Bluffs | 1,181 | 0.6% |
| 37 | Mountain View | 1,153 | -0.2% |
| 38 | Bar Nunn | 1,134 | 4.9% |
| 39 | Guernsey | 1,110 | -0.6% |
| 40 | Dubois | 984 | 0.3% |
| 41 | Hanna | 857 | -0.4% |
| 42 | Upton | 855 | -0.6% |
| 43 | Marbleton | 848 | 2.0% |
| 44 | Moorcroft | 827 | – |
| 45 | Alpine | 741 | 7.2% |
| 46 | Dayton | 717 | 0.8% |
| 47 | Ranchester | 701 | -0.0% |
| 48 | Diamondville | 673 | -1.5% |
| 49 | Shoshoni | 656 | 0.8% |
| 50 | Star Valley Ranch | 625 | -1.0% |
| 51 | Cowley | 576 | 0.7% |
| 52 | Byron | 544 | -0.5% |
| 53 | Lingle | 487 | -1.1% |
| 54 | Cokeville | 476 | -1.6% |
| 55 | Bear River | 474 | -0.1% |
| 56 | Big Piney | 458 | 1.7% |
| 57 | Rolling Hills | 455 | -0.2% |
| 58 | Encampment | 438 | -0.2% |
| 59 | Hulett | 433 | -0.2% |
| 60 | Midwest | 422 | 0.8% |
| 61 | Hudson | 409 | 0.1% |
| 62 | Sinclair | 404 | -1.0% |
| 63 | La Barge | 404 | -1.5% |
| 64 | Baggs | 353 | 0.4% |
| 65 | Thayne | 343 | -0.6% |
| 66 | Meeteetse | 341 | -0.7% |
| 67 | La Grange | 333 | -0.2% |
| 68 | Ten Sleep | 316 | 0.3% |
| 69 | Burns | 315 | 2.4% |
| 70 | Pine Haven | 293 | 6.9% |
| 71 | Kaycee | 268 | 1.8% |
| 72 | Medicine Bow | 265 | -0.7% |
| 73 | Wamsutter | 261 | 0.1% |
| 74 | East Thermopolis | 256 | -1.6% |
| 75 | Burlington | 247 | -0.2% |
| 76 | Superior | 235 | -0.8% |
| 77 | Rock River | 235 | – |
| 78 | Fort Laramie | 233 | -1.0% |
| 79 | Chugwater | 232 | -1.0% |
| 80 | Glendo | 227 | -0.1% |
| 81 | Frannie | 209 | 0.1% |
| 82 | Elk Mountain | 188 | -0.4% |
| 83 | Deaver | 178 | 0.3% |
| 84 | Edgerton | 171 | 0.3% |
| 85 | Pavillion | 164 | -0.2% |
| 86 | Yoder | 162 | -1.1% |
| 87 | Granger | 143 | -0.5% |
| 88 | Albin | 121 | 0.2% |
| 89 | Clearmont | 115 | – |
| 90 | Manderson | 102 | -0.5% |
| 91 | Manville | 98 | -1.0% |
| 92 | Opal | 96 | -1.5% |
| 93 | Bairoil | 94 | -0.8% |
| 94 | Dixon | 80 | 0.3% |
| 95 | Hartville | 74 | -0.3% |
| 96 | Riverside | 58 | -0.4% |
| 97 | Kirby | 52 | -1.4% |
| 98 | Van Tassell | 17 | -1.4% |
| 99 | Lost Springs | 1 | – |
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