| Rank | City | 2009 Population (Est.) | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Cheyenne | 56,909 | 0.8% |
| 2 | Casper | 53,837 | 1.0% |
| 3 | Laramie | 28,138 | 0.4% |
| 4 | Gillette | 26,826 | 3.4% |
| 5 | Rock Springs | 20,160 | 1.0% |
| 6 | Sheridan | 17,176 | 1.0% |
| 7 | Green River | 12,115 | 0.4% |
| 8 | Evanston | 11,773 | 0.3% |
| 9 | Riverton | 10,058 | 1.0% |
| 10 | Jackson | 9,861 | 1.6% |
| 11 | Cody | 9,335 | 0.6% |
| 12 | Rawlins | 8,723 | -0.4% |
| 13 | Lander | 7,259 | 0.6% |
| 14 | Douglas | 5,977 | 1.5% |
| 15 | Powell | 5,728 | 0.3% |
| 16 | Torrington | 5,615 | -0.5% |
| 17 | Worland | 4,985 | -0.8% |
| 18 | Buffalo | 4,793 | 2.5% |
| 19 | Mills | 3,535 | 1.3% |
| 20 | Newcastle | 3,362 | 0.4% |
| 21 | Wheatland | 3,280 | -0.9% |
| 22 | Thermopolis | 2,901 | -1.1% |
| 23 | Kemmerer | 2,480 | -0.8% |
| 24 | Glenrock | 2,421 | 0.9% |
| 25 | Evansville | 2,420 | 0.9% |
| 26 | Lovell | 2,301 | -0.3% |
| 27 | Pinedale | 2,122 | 5.3% |
| 28 | Lyman | 2,009 | 0.5% |
| 29 | Afton | 1,868 | 0.1% |
| 30 | Bar Nunn | 1,821 | 8.7% |
| 31 | Greybull | 1,762 | -0.3% |
| 32 | Saratoga | 1,757 | 0.3% |
| 33 | Wright | 1,474 | 1.0% |
| 34 | Lusk | 1,426 | -0.1% |
| 35 | Sundance | 1,319 | 1.1% |
| 36 | Basin | 1,255 | 0.1% |
| 37 | Mountain View | 1,211 | 0.5% |
| 38 | Pine Bluffs | 1,159 | 0.0% |
| 39 | Guernsey | 1,072 | -0.8% |
| 40 | Dubois | 1,060 | 1.1% |
| 41 | Marbleton | 1,059 | 3.8% |
| 42 | Moorcroft | 908 | 1.2% |
| 43 | Upton | 903 | 0.4% |
| 44 | Hanna | 866 | -0.1% |
| 45 | Alpine | 814 | 4.7% |
| 46 | Ranchester | 794 | 1.6% |
| 47 | Dayton | 772 | 1.3% |
| 48 | Shoshoni | 693 | 1.1% |
| 49 | Star Valley Ranch | 690 | 0.7% |
| 50 | Diamondville | 674 | -0.7% |
| 51 | Cowley | 623 | 1.3% |
| 52 | Byron | 566 | 0.2% |
| 53 | Bear River | 513 | 1.0% |
| 54 | Big Piney | 511 | 2.2% |
| 55 | Hulett | 509 | 2.0% |
| 56 | Rolling Hills | 508 | 1.3% |
| 57 | Cokeville | 491 | -0.4% |
| 58 | Lingle | 488 | -0.5% |
| 59 | La Barge | 471 | 1.1% |
| 60 | Encampment | 453 | 0.3% |
| 61 | Midwest | 433 | 0.7% |
| 62 | Hudson | 428 | 0.6% |
| 63 | Sinclair | 404 | -0.5% |
| 64 | Baggs | 403 | 1.9% |
| 65 | Pine Haven | 384 | 7.0% |
| 66 | Thayne | 382 | 1.1% |
| 67 | Meeteetse | 345 | -0.2% |
| 68 | La Grange | 332 | -0.1% |
| 69 | Ten Sleep | 323 | 0.4% |
| 70 | Burns | 317 | 1.3% |
| 71 | Kaycee | 291 | 1.9% |
| 72 | Wamsutter | 272 | 0.6% |
| 73 | Medicine Bow | 268 | -0.2% |
| 74 | East Thermopolis | 260 | -0.6% |
| 75 | Burlington | 258 | 0.4% |
| 76 | Superior | 237 | -0.3% |
| 77 | Fort Laramie | 232 | -0.6% |
| 78 | Chugwater | 220 | -1.2% |
| 79 | Rock River | 217 | -1.0% |
| 80 | Glendo | 214 | -0.8% |
| 81 | Frannie | 212 | 0.2% |
| 82 | Elk Mountain | 200 | 0.6% |
| 83 | Deaver | 181 | 0.4% |
| 84 | Edgerton | 177 | 0.6% |
| 85 | Pavillion | 171 | 0.4% |
| 86 | Yoder | 162 | -0.5% |
| 87 | Granger | 146 | – |
| 88 | Albin | 116 | -0.4% |
| 89 | Clearmont | 114 | -0.1% |
| 90 | Manderson | 103 | -0.1% |
| 91 | Manville | 101 | -0.1% |
| 92 | Opal | 97 | -0.6% |
| 93 | Bairoil | 96 | -0.1% |
| 94 | Dixon | 81 | 0.3% |
| 95 | Hartville | 69 | -1.0% |
| 96 | Riverside | 63 | 0.8% |
| 97 | Kirby | 52 | -0.7% |
| 98 | Van Tassell | 18 | – |
| 99 | Lost Springs | 1 | – |
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