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| City | Date Incorporated | Notes |
|---|---|---|
| Afton | 4-24-1902 | |
| Albin | 9-13-1930 | Wyo. State Tribune & Cheyenne State Leader, 9-19-1930 |
| Alpine | 11-8-1988 | election date |
| Baggs | - - 1910 | |
| Bairoil | 6 - 1980 | |
| Bar Nun | 2-4-1982 | |
| Basin | 7-7-1902 | election date Source: Big Horn County Commissioners Record |
| Big Piney | 4-1-1913 | |
| Buffalo | 4-4-1884 | Sessions Laws |
| Burns | 5 - 1916 | |
| Byron | 2 - 1912 | |
| Casper | 7-8-1889 | election date Source: Carbon County Commissioners Minutes 6-5-1889 |
| Cheyenne | 12-10-1869 | Under special charter Source: 1869 Laws of Wyoming (previously incorporated under Dakota law 8-8-1867) |
| Chugwater | - - 1913 | |
| Clearmont | - - 1920 | |
| Cody | 10-1-1901 | Source: Big Horn County Commissioners Record |
| Cokeville | 5-31-1910 | |
| Cowley | 5 - 1907 | |
| Dayton | 7-2-1906 | election date See Sheridan Co. Commissioners Minutes, book 4, page 190 |
| Diamondville | 3-2-1901 | |
| Dixon | - - 1917 | |
| Douglas | 6-8-1887 | Source: Albany County Commissioners Record |
| Dubois | 5-14-1914 | Source: Fremont County Commissioners Proceedings 5-9-1914 |
| East Thermopolis | - - 1948 | |
| Edgerton | 11-3-1925 | |
| Elk Mountain | 10 - 1909 | |
| Elmo | 1-29-1917 | Source: Carbon Co. Plats & Incorporation information |
| Encampment | 4-2-1901 | |
| Evanston | 6-1-1888 | Source: Uinta County Commissioners Minutes |
| Evansville | 7 - 1923 | |
| Fort Laramie | - - 1925 | |
| Frannie | 6-29-1954 | |
| Gillette | 1-6 & 7-1892 | Source: Crook County Commissioners Minutes |
| Glendo | 5-1-1922 | |
| Glenrock | - - 1907 | |
| Granger | - - 1914 | |
| Green River | 6-10-1891 | 1868 (?) - Dakota Law Source: Sweetwater County Commissioners Minutes: 6-24-1891 and 7-15-1891. No newspaper to verify date. |
| Greybull | 5 - 1909 | |
| Guernsey | 4-4-1902 | Source: Laramie County Commissioners Minutes, page 458, April 3, 1902 |
| Hanna | 8-6-1935 | |
| Hartville | 2-17-1900 | |
| Hudson | 2-4-1909 | Source: Fremont County Commissioners Proceedings |
| Hulett | 5-1-1951 | See Crook Co., map & plat book for census 1951 |
| Jackson | 8-7-1914 | Source: Lincoln County Commissioners Minutes |
| Kaycee | ca. 7-1-1913 | Source: Johnson County Commissioners Minutes |
| Kemmerer | 1-23-1899 | |
| Kirby | - - 1918 | |
| LaBarge | 2-13-1973 | |
| LaGrange | 4-18-1938 | |
| Lander | 7-17-1890 | order incorporation by County Commissioners Source: Fremont County Commissioners Proceedings |
| Laramie | 1-13-1874 | Source: Compiled Laws of Wyoming 1876 |
| Lingle | 11 - 1918 | |
| Lost Cabin | 6-1-1909 | Source: Fremont County Commissioners Proceedings |
| Lost Springs | 8 - 1911 | |
| Lovell | 1906 - 1909 | |
| Lusk | 6-17-1898 | |
| Lyman | - - 1915 | |
| Manderson | - - 1921 | |
| Manville | - - 1913 | election dated 5-31-1910 Source: Niobrara County abstracts, roll 20 |
| Marbleton | 8-4-1914 | Source: Lincoln County Commissioners Minutes |
| Medicine Bow | 6-6-1909 | |
| Meeteetse | 8-7-1901 | Source: Big Horn County Commissioners Record |
| Midwest | 4-26-1973 | |
| Mills | - - 1921 | |
| Moorcroft | 10-2-1906 | |
| Mountain View | 4 - 1971 | |
| Newcastle | 10-25-1889 | Source: Crook County Commissioners Records |
| Opal | 8-3-1914 | Source: Kemmerer Commerce Newspaper |
| Parco | 4-1-1925 | name changed to Sinclair in 1943 |
| Pavillion | - - 1939 | |
| Pine Bluffs | 5-14-1909 | |
| Pine Haven | ca. 1986 | Crook County |
| Pinedale | 2-12-1912 | Source: Fremont County Commissioners Proceedings |
| Powell | 5-10-1910 | |
| Ranchester | 9-28-1919 | Source: Sheridan County Commissioners Records |
| Rawlins | 3-12-1886 | Source: Session Laws of Wyoming, 1886 |
| Riverside | 11 - 1902 | |
| Riverton | 10-2-1906 | Source: Fremont County Commissioners Proceedings |
| Rock River | 5-12-1909 | |
| Rock Springs | - - 1888 | |
| Rolling Hills | 3-8-1984 | Tribune |
| Saratoga | 7-1-1900 | |
| Sheridan | 7-8-1907 | Sheridan Post 7-11-1907 Source: Sheridan County Commissioners Proceedings |
| Shoshoni | 4-2-1906 | election held Shoshoni Capital 3-31-1906 and Wind River Mountaineer (4-6-1906) |
| Sinclair | 4-1-1925 | Parco changed to Sinclair in 1943 |
| South Superior | 3 - 1911 | |
| Sundance | 10-5-1887 | by order of County Commissioners Source: Crook County Commissioners Minutes |
| Superior | 2 - 1911 | |
| Ten Sleep | 1-11-1932 | See the Worland Grit 1-14-1932 |
| 3-29-1947 | Source: Star Valley Independent 4-3-1947 | |
| Thermopolis | 1-21-1899 | election date |
| Torrington | 1-4-1907 | election date Source: Laramie County Commissioners 12-4-1907 |
| Upton | 10-18-1908 | |
| Van Tassell | 3-8-1916 | Van Tassell Pioneer Paper 4-3-1916 Notice of incorporation 1-4-1916Source: Niobrara County adstracts, roll 22 |
| Wamsutter | 4-21-1914 | |
| Wheatland | 11-18-1905 | election date Source: Laramie County Commissioners |
| Worland | 3-30-1906 | election date |
| Wright | 11-27-1984 | |
| Deaver | - - 1919 | |