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List of towns, formation dates, and other details
| Alabama | |
| 1806 Settled | |
| 1826 Formed as Gerryville from towns of Shelby (Orleans County) and Pembroke | |
| 1828 Name changed to Alabama | |
| Alexander | |
| 1802 Settled | |
| 1812 Formed from Town of Batavia | |
| Angelica | |
| In Genesee County 1805–1806 | |
| Attica | |
| In Genesee County 1811–1841 | |
| Barre | |
| In Genesee County 1818–1824 | |
| Batavia (city) | |
| 1823 Incorporated as a village in Town of Batavia | |
| 1915 Formed as a city from Village of Batavia | |
| Batavia (town) | |
| 1802 Formed as a town | |
| 1804 Daughter towns Chautauqua and Willink (now Aurora) formed | |
| 1808 Daughter towns Sheldon and Warsaw formed | |
| 1812 Daughter towns Alexander, Bethany, Pembroke, and Ridgeway formed | |
| 1820 Daughter towns Elba and Stafford formed | |
| 1915 City of Batavia formed from Village of Batavia | |
| Bellona | |
| Name for Town of Le Roy 1812–1813 | |
| Bennington | |
| In Genesee County 1818–1841 | |
| Bergen | |
| 1805 Settled in Bergen Village | |
| 1804–10 Settled by 60 families from New Haven, CT | |
| 1813 Formed from Town of Murray | |
| 1820 Daughter town Byron formed | |
| Bethany | |
| 1803 Settled in northeast part of town | |
| 1812 Formed from Town of Batavia | |
| Byron | |
| 1807 Settled | |
| 1820 Formed from Town of Bergen | |
| Caledonia | |
| In Genesee County 1802–1821 | |
| Castile | |
| In Genesee County 1821–1841 | |
| Chautauqua | |
| In Genesee County 1804–1808 | |
| China | |
| In Genesee County 1818–1841 | |
| Clarendon | |
| In Genesee County 1821–1824 | |
| Clarkson | |
| In Genesee County 1819–1821 | |
| Covington | |
| In Genesee County 1817–1841 | |
| Darien | |
| 1803 Settled near Darien City | |
| 1832 Formed from Town of Pembroke | |
| Elba | |
| 1801 Settlers from Vermont at Daws Corners | |
| 1820 Formed from Town of Batavia | |
| 1842 Daughter town Oakfield formed | |
| Gaines | |
| In Genesee County 1816–1824 | |
| Gainesville | |
| In Genesee County 1814–1841 | |
| Gates | |
| In Genesee County 1802–1821 | |
| Gerrysville | |
| Name for Town of Alabama 1826–1828 | |
| Java | |
| In Genesee County 1832–1841 | |
| Leicester | |
| In Genesee County 1802–1821 | |
| LeRoy | |
| 1797 Settled | |
| 1812 Formed as Town of Bellona from Town of Caledonia | |
| 1813 Name changed to LeRoy | |
| 1817 Daughter town Covington formed | |
| 1820 Daughter town Stafford formed | |
| 1842 Ceded land to Town of Pavilion | |
| Middlebury | |
| In Genesee County 1812–1841 | |
| Murray | |
| In Genesee County 1808–1821 | |
| Newstead | |
| In Genesee County 1804–1808 | |
| Oakfield | |
| 1801 Settled | |
| 1842 Formed from Town of Elba | |
| Oak Orchard | |
| In Genesee County 1822–1824 | |
| Ogden | |
| In Genesee County 1817–1821 | |
| Orangeville | |
| In Genesee County 1816–1841 | |
| Parma | |
| In Genesee County 1808–1821 | |
| Pavilion | |
| 1809 Settled | |
| 1841 Formed from Town of Covington, Wyoming County | |
| 1842 Annexed land from towns of LeRoy and Stafford | |
| Pembroke | |
| 1804 Settled | |
| 1812 Formed from Town of Batavia | |
| 1826 Daughter town Alabama formed | |
| 1832 Daughter town Darien formed from South Pembroke | |
| Perry | |
| In Genesee County 1814–1841 | |
| Ridgeway | |
| In Genesee County 1812–1824 | |
| Riga | |
| In Genesee County 1808–1821 | |
| Shelby | |
| In Genesee County 1818–1824 | |
| Sheldon | |
| In Genesee County 1808–1841 | |
| Stafford | |
| 1801 Settled | |
| 1820 Formed from towns of Batavia and LeRoy | |
| 1842 Ceded land to Town of Pavilion | |
| Southampton | |
| In Genesee County 1802–1821 | |
| Sweden | |
| In Genesee County 1813–1821 | |
| Warsaw | |
| In Genesee County 1808–1841 | |
| Wethersfield | |
| In Genesee County 1823–1841 | |
| Willink | |
| In Genesee County 1804–1808 | |
| Yates | |
| In Genesee County 1822–1824 | |
| York | |
| In Genesee County 1819–1821 | |
Selected links to town websites, clerks, and historians
Batavia (City)
Alabama (Town)
Alexander (Town)
Batavia (Town)
Bergen (Town)
Bethany (Town)
Byron (Town)
Darien (Town)
Elba (Town)
LeRoy (Town)
Oakfield (Town)
Pavillion (Town)
Pembroke (Town)
Stafford (Town)
Alexander (Village)
Bergen (Village)
Corfu (Village)
Elba (Village)
LeRoy (Village)
Oakfield (Village)