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List of towns, formation dates, and other details
| Arcade | |
| 1807 Settlers from New England | |
| 1818 Formed in Genesee Count as Town of China from Town of Sheldon | |
| 1832 Daughter town Java formed | |
| 1841 transferred to new county of Wyoming | |
| 1866 Name changed from China to Arcade; ceded land to Town of Eagle | |
| Attica | |
| 1802 Settled | |
| 1811 Formed in Genesee County from Town of Sheldon | |
| 1816 Daughter town Orangeville formed | |
| 1841 Transferred to new county of Wyoming | |
| Bennington | |
| 1802 Settlers from Vermont | |
| 1818 Formed in Genesee County from Town of Sheldon | |
| 1841 Transferred to new county of Wyoming | |
| Castile | |
| c. 1780 Settlers at Gardeau Flats, near St. Helena | |
| 1821 Formed in Genesee County from Town of Perry | |
| 1841 Transferred to new county of Wyoming | |
| China | |
| Name for Town of Arcade 1818 – 1866 | |
| Covington | |
| 1807 Settled | |
| 1817 Formed in Genesee County from towns of LeRoy and Perry | |
| 1841 Daughter town Pavilion formed in Genesee County; Covington transferred to new county of Wyoming | |
| Eagle | |
| 1808 Settlers from Cayuga County | |
| 1823 Formed in Allegany County from Town of Pike | |
| 1846 Transferred to Wyoming County | |
| 1866 Annexed land from Town of Arcade | |
| Gainesville | |
| 1805 Settlers from Columbia County and Vermont | |
| 1814 Formed in Genesee County as Town of Hebe from Town of Warsaw | |
| 1816 Name changed to Gainesville | |
| 1841 transferred to new county of Wyoming | |
| Genesee Falls | |
| 1804 Settled | |
| 1846 Formed from towns of Portage (Livingston County) and Pike | |
| 1823 Daughter town Annsville formed | |
| Hebe | |
| Name for Town of Gainesville 1814 – 1816 | |
| Java | |
| 1810 Settlers from Lowell, MA | |
| 1832 Formed in Genesee County from Town of China (now Arcade) | |
| 1841 Transferred to new county of Wyoming | |
| Middlebury | |
| 1802 Settlers from Rutland County, VT, near Wrights Corners | |
| 1812 Formed in Genesee County from Town of Warsaw | |
| 1841 Transferred to new county of Wyoming | |
| Orangeville | |
| 1816 Formed in Genesee County from Town of Attica | |
| 1823 Daughter town Wethersfield formed | |
| 1841 Transferred to new county of Wyoming | |
| Pike | |
| 1806 Settlers from Whitehall, NY | |
| 1818 Formed in Allegany County from Town of Nunda | |
| 1819 Daughter town Centerville formed in Allegany County | |
| 1822 Daughter town Hume formed in Allegany County | |
| 1823 Daughter town Eagle formed | |
| 1846 Transferred to Wyoming County | |
| 1846 Daughter town Genesee Falls formed | |
| Sheldon | |
| 1804 Settled | |
| 1808 Formed in Genesee County from Town of Batavia | |
| 1811 Daughter town Attica formed | |
| 1818 Daughter towns China (now Arcade) and Bennington formed | |
| 1841 Transferred to new county Wyoming | |
| Warsaw | |
| 1803 Settled at Warsaw Village | |
| 1808 Formed in Genesee County from Town of Batavia | |
| 1812 Daughter town Middlebury formed | |
| 1814 Daughter town Hebe (now Gainesville) formed | |
| 1841 Transferred to new county of Wyoming | |
| Wethersfield | |
| 1810 Settlers from Jefferson County | |
| 1823 Formed in Genesee County from Town of Orangeville | |
| 1841 Transferred to new county of Wyoming | |