How to use this list
Counties are sorted alphabetically. Use ZIP count and population to spot larger counties, then open a county for its ZIP roster and income/housing averages.
Maine counties
16 counties · 427 ZIP codes · population 1,377,734 . Select a county to open its ZIP table and local summary.
Related pages
Also see the Maine overview, cities, rankings, and congressional districts.
| County | ZIP codes | Population | Avg. income |
|---|---|---|---|
| Androscoggin County | 14 | 112,323 | $75,347 |
| Aroostook County | 41 | 67,747 | $53,050 |
| Cumberland County | 38 | 306,413 | $94,796 |
| Franklin County | 16 | 29,308 | $55,380 |
| Hancock County | 40 | 59,374 | $73,392 |
| Kennebec County | 26 | 125,584 | $72,987 |
| Knox County | 19 | 40,860 | $82,868 |
| Lincoln County | 27 | 35,840 | $81,995 |
| Oxford County | 34 | 59,426 | $60,328 |
| Penobscot County | 41 | 145,362 | $61,514 |
| Piscataquis County | 13 | 21,390 | $54,071 |
| Sagadahoc County | 8 | 37,093 | $87,446 |
| Somerset County | 25 | 50,624 | $59,321 |
| Waldo County | 18 | 40,036 | $69,633 |
| Washington County | 31 | 31,623 | $54,190 |
| York County | 36 | 214,731 | $91,158 |
Frequently asked questions
- How many counties are listed for Maine?
- US5 currently lists 16 counties with published ZIP coverage in Maine. Counts can change as geography publishes update.
- What happens when I open a county?
- Each county page shows ZIP totals, income and housing averages, and a ZIP table. From there you can open any ZIP for a full demographics dashboard.