TOWN ELECTIONS
Biennially, odd years, first Monday in May
| Union |
Biennially, odd years, Tuesday after the first Monday in November
| Ansonia | Eastford | Montville | Somers |
| Ashford | East Lyme | Morris | South Windsor |
| Andover | East Windsor | Naugatuck | Southbury |
| Avon | Easton | New Britain | Southington |
| Barkhamsted | Ellington | New Canaan | Sprague |
| Beacon Falls | Enfield | New Fairfield | Stafford |
| Berlin | Essex | New Hartford | Stamford |
| Bethany | Fairfield | New Haven | Sterling |
| Bethel | Farmington | New London | Stonington |
| Bethlehem | Franklin | New Milford | Stratford |
| Bloomfield | Glastonbury | Newington | Suffield |
| Bolton | Goshen | Newtown | Thomaston |
| Bozrah | Granby | Norfolk | Thompson |
| Branford | Greenwich | North Branford | Tolland |
| Bridgeport | Griswold | North Canaan | Torrington |
| Bridgewater | Groton | North Haven | Trumbull |
| Bristol | Groton City | North Stonington | Vernon |
| Brookfield | Guilford | Norwalk | Voluntown |
| Brooklyn | Haddam | Norwich | Wallingford |
| Burlington | Hamden | Old Lyme | Warren |
| Canaan | Hampton | Old Saybrook | Washington |
| Canterbury | Hartford | Orange | Waterbury |
| Canton | Hartland | Oxford | Waterford |
| Chaplin | Harwinton | Plainfield | Watertown |
| Cheshire | Hebron | Plainville | West Hartford |
| Chester | Kent | Plymouth | West Haven |
| Clinton | Killingly | Pomfret | Westbrook |
| Colchester | Killingworth | Portland | Weston |
| Colebrook | Lebanon | Preston | Westport |
| Columbia | Ledyard | Prospect | Wethersfield |
| Cornwall | Lisbon | Putnam | Willington |
| Coventry | Litchfield | Redding | Wilton |
| Cromwell | Lyme | Ridgefield | Winchester (Winsted) |
| Danbury | Madison | Rocky Hill | Windham |
| Darien | Manchester | Roxbury | Windsor |
| Deep River | Mansfield | Salem | Windsor Locks |
| Derby | Marlborough | Salisbury | Wolcott |
| Durham | Meriden | Scotland | Woodbridge |
| East Granby | Middlebury | Seymour | Woodbury |
| East Haddam | Middlefield | Sharon | Woodstock |
| East Hampton | Middletown | Shelton | |
| East Hartford | Milford | Sherman | |
| East Haven | Monroe | Simsbury |
CITY ELECTIONS
Biennially, odd years, first Monday in May
Groton
BOROUGH ELECTIONS
Biennially, odd years, first Monday in May
| Bantam (Litchfield) | Litchfield |
| Danielson (Killingly) | Newtown |
| Fenwick (Old Saybrook) | Stonington |
| Jewett City (Griswold) | Woodmont (Milford) |
(Where the name of the borough is other than the town in which it is located, the town location is given in parentheses.)
CITIES IN CONNECTICUT WITH DATE OF INCORPORATION
| City | County | Date Incorporated |
| New Haven | New Haven | January session, 1784 |
| New London | New London | January session, 1784 |
| Hartford | Hartford | May session, 1784 |
| Middletown | Middlesex | May session, 1784 |
| Norwich | New London | May session, 1784 |
| Bridgeport | Fairfield | May session, 1836 |
| Waterbury | New Haven | May session, 1853 |
| Meriden | New Haven | May session, 1867 |
| New Britain | Hartford | May session, 1870 |
| Danbury | Fairfield | January session, 1889 |
| Ansonia | New Haven | January session, 1893 |
| Derby | New Haven | January session, 1893 |
| Norwalk | Fairfield | January session, 1893 |
| Stamford | Fairfield | January session, 1893 |
| Bristol | Hartford | January session, 1911 |
| Shelton | Fairfield | January session, 1915 |
| Winsted (Winchester) | Litchfield | named January session, 1917 |
| Torrington | Litchfield | named January session, 1923 |
| Milford | New Haven | named January session, 1959 |
| West Haven | New Haven | Home Rule Act, June 1961 |
| Groton | New London | Home Rule Act, May 4, 1964 |
BOROUGHS IN CONNECTICUT WITH DATE OF INCORPORATION
| Borough | County | Date Incorporated |
| Stonington | New London | May session, 1801 |
| Newtown | Fairfield | May session, 1824 |
| Danielson (Killingly) | Windham | May session, 1854 |
| Litchfield | Litchfield | January session, 1879 |
| Naugatuck | New Haven | January session, 1893 |
| Jewett City (Griswold) | New London | January session, 1895 |
| Fenwick (Old Saybrook) | Middlesex | January session, 1899 |
| Woodmont (Milford) | New Haven | January session, 1903 |
| Bantam (Litchfield) | Litchfield | January session, 1915 |