Maine Counties Directory & Interactive Map
Complete official guide to all 16 counties in Maine (ME). Explore 2024 US Census population estimates, county seats, FIPS codes, land areas, and interactive mapping tools powered by GeoMap Suite.
Maine County Breakdown
Showing 6 of 6 documented counties and seats.
County Name | FIPS | County Seat | Population (Census) | Land Area | Quick Tool |
|---|---|---|---|---|---|
| Cumberland County | 23005 | Portland | 303,069 | 835 sq mi | Lookup |
| York County | 23031 | Alfred | 211,972 | 991 sq mi | Lookup |
| Penobscot County | 23019 | Bangor | 152,199 | 3,396 sq mi | Lookup |
| Kennebec County | 23011 | Augusta | 123,642 | 867 sq mi | Lookup |
| Androscoggin County | 23001 | Auburn | 111,139 | 468 sq mi | Lookup |
| Aroostook County | 23003 | Houlton | 67,105 | 6,671 sq mi | Lookup |
Geographic Structure of Maine Counties
County Administration & Governance
In Maine, county governments manage vital public infrastructure, tax assessments, law enforcement, judicial courts, election administration, and public records. The county seat (Portland and other municipal headquarters) houses the primary courthouse, commissioners, and sheriff’s department.
All Maine counties carry a unique 5-digit Federal Information Processing Standard (FIPS) code, where the first two digits (23) designate the state and the remaining three digits identify each specific jurisdiction.
Geographic & Demographic Highlights
- Most Populous County:Cumberland County (303,069 residents)
- Largest by Land Area:Aroostook County (6,671 sq mi)
- State Capital:Augusta
- Census Bureau Region:Northeast United States
Demographic calculations derive from the United States Census Bureau 2024 Population Estimates Program (PEP) and TIGER/Line geographic boundary files.