City levels are determined by the county in which they are located. If the city is not named below, it may be located within a county listed below. Visit the National Association of Counties website and type the city name into the "City/Zip Search" tab to determine the city's county. If the city is not listed below or is not located in a county below, that city is a Level 1.
| Level | City | County |
|---|---|---|
| 4 | Bridgeport / Danbury | Fairfield |
| 4 | Cromwell / Old Saybrook | Middlesex |
| 3 | Hartford | Hartford |
| 4 | New Haven | New Haven |
| 4 | New London / Groton | New London |