| population | |
| Town of Bozrah | 2603 |
| Town of Colchester | 16130 |
| Town of East Lyme | 19343 |
| Town of Franklin | 1975 |
| Town of Griswold | 11830 |
| Town of Groton | 39692 |
| Town of Lebanon | 7259 |
| population | |
| Town of Ledyard | 15025 |
| Town of Lyme | 2374 |
| Town of Montville | 19396 |
| Town of New London | 27179 |
| Town of North Stonington | 5256 |
| Town of Norwich | 39899 |
| Town of Old Lyme | 7521 |
| population | |
| Town of Preston | 4707 |
| Town of Salem | 4183 |
| Town of Sprague | 2951 |
| Town of Stonington | 18370 |
| Town of Voluntown | 2579 |
| Town of Waterford | 19281 |
 | Groton New London Airport | ~ 16.04 km |
| Elizabeth Field | ~ 24.76 km |
| Westerly State Airport | ~ 28.44 km |
| Montauk Airport | ~ 46.09 km |
| Rentschler Heliport | ~ 53.52 km |
| Hartford Brainard Airport | ~ 54.21 km |
| Block Island State Airport | ~ 55.25 km |
| Town of East Hampton Airport | ~ 57.64 km |
| Quonset State Airport | ~ 59.59 km |
