| Rank | City | 2020 Population (Est.) | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Cheyenne | 64,235 | 0.9% |
| 2 | Casper | 57,931 | 0.5% |
| 3 | Laramie | 32,711 | 0.7% |
| 4 | Gillette | 32,030 | 1.1% |
| 5 | Rock Springs | 22,653 | -0.2% |
| 6 | Sheridan | 17,940 | 0.3% |
| 7 | Green River | 11,759 | -0.7% |
| 8 | Evanston | 11,641 | -0.7% |
| 9 | Riverton | 10,772 | 0.2% |
| 10 | Jackson | 10,559 | 1.1% |
| 11 | Cody | 9,788 | 0.3% |
| 12 | Rawlins | 8,510 | -0.9% |
| 13 | Lander | 7,458 | -0.0% |
| 14 | Torrington | 6,624 | 0.2% |
| 15 | Douglas | 6,364 | 0.4% |
| 16 | Powell | 6,180 | -0.2% |
| 17 | Worland | 5,024 | -1.0% |
| 18 | Buffalo | 4,575 | -0.0% |
| 19 | Mills | 3,979 | 1.6% |
| 20 | Wheatland | 3,462 | -0.5% |
| 21 | Newcastle | 3,397 | -0.4% |
| 22 | Evansville | 2,964 | 1.7% |
| 23 | Bar Nunn | 2,812 | 2.7% |
| 24 | Thermopolis | 2,764 | -0.9% |
| 25 | Kemmerer | 2,749 | 0.4% |
| 26 | Glenrock | 2,575 | -0.0% |
| 27 | Lovell | 2,366 | 0.0% |
| 28 | Lyman | 2,070 | -0.2% |
| 29 | Afton | 2,041 | 0.7% |
| 30 | Pinedale | 1,871 | -0.9% |
| 31 | Greybull | 1,838 | -0.1% |
| 32 | Wright | 1,753 | -0.3% |
| 33 | Star Valley Ranch | 1,659 | 1.1% |
| 34 | Saratoga | 1,615 | -0.5% |
| 35 | Lusk | 1,526 | -0.3% |
| 36 | Sundance | 1,292 | 1.0% |
| 37 | Basin | 1,282 | -0.0% |
| 38 | Mountain View | 1,226 | -0.5% |
| 39 | Pine Bluffs | 1,159 | 0.3% |
| 40 | Guernsey | 1,124 | -0.2% |
| 41 | Marbleton | 1,111 | 0.2% |
| 42 | Moorcroft | 1,084 | 0.8% |
| 43 | Upton | 1,056 | -0.5% |
| 44 | Ranchester | 1,041 | 2.2% |
| 45 | Dubois | 959 | -0.1% |
| 46 | Alpine | 924 | 1.2% |
| 47 | Dayton | 828 | 1.0% |
| 48 | Hanna | 769 | -1.0% |
| 49 | Cowley | 761 | 1.7% |
| 50 | Diamondville | 757 | 0.3% |
| 51 | Shoshoni | 644 | -0.1% |
| 52 | Byron | 604 | 0.2% |
| 53 | La Barge | 569 | 0.4% |
| 54 | Cokeville | 554 | 0.4% |
| 55 | Pine Haven | 548 | 1.3% |
| 56 | Big Piney | 517 | -0.7% |
| 57 | Bear River | 506 | -0.3% |
| 58 | Wamsutter | 467 | 0.4% |
| 59 | Lingle | 456 | -0.3% |
| 60 | Hudson | 445 | -0.3% |
| 61 | La Grange | 442 | -0.1% |
| 62 | Hulett | 427 | 1.2% |
| 63 | Encampment | 426 | -0.6% |
| 64 | Rolling Hills | 424 | -0.4% |
| 65 | Baggs | 417 | -0.6% |
| 66 | Sinclair | 395 | -1.0% |
| 67 | Midwest | 394 | -0.3% |
| 68 | Thayne | 394 | 0.8% |
| 69 | Burlington | 342 | 1.9% |
| 70 | Meeteetse | 323 | -0.1% |
| 71 | Burns | 312 | 0.4% |
| 72 | Superior | 312 | -0.8% |
| 73 | Kaycee | 278 | 0.6% |
| 74 | Medicine Bow | 259 | -1.0% |
| 75 | Rock River | 254 | 0.4% |
| 76 | Ten Sleep | 250 | -0.4% |
| 77 | East Thermopolis | 238 | -0.7% |
| 78 | Pavillion | 230 | -0.0% |
| 79 | Fort Laramie | 227 | -0.1% |
| 80 | Albin | 206 | 1.4% |
| 81 | Edgerton | 204 | 0.5% |
| 82 | Chugwater | 201 | -0.6% |
| 83 | Glendo | 201 | -0.2% |
| 84 | Elk Mountain | 185 | -0.4% |
| 85 | Deaver | 181 | 0.2% |
| 86 | Frannie | 159 | 0.1% |
| 87 | Clearmont | 157 | 1.1% |
| 88 | Yoder | 154 | 0.2% |
| 89 | Granger | 128 | -0.9% |
| 90 | Manderson | 113 | -0.1% |
| 91 | Opal | 109 | 1.4% |
| 92 | Bairoil | 97 | -1.0% |
| 93 | Dixon | 94 | -0.3% |
| 94 | Manville | 87 | -1.0% |
| 95 | Kirby | 84 | -1.0% |
| 96 | Hartville | 60 | -0.4% |
| 97 | Riverside | 52 | – |
| 98 | Van Tassell | 18 | 2.0% |
| 99 | Lost Springs | 4 | – |
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