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 | Bar Harbor / Rockport | Hancock / Knox |
| 4 | Kennebunk / Kittery / Sanford | York |
| 3 | Portland | Cumberland / Sagadahoc |