County · Maine · United States
Penobscot County ZIP codes
45 ZIP codes · 44 cities · FIPS 23019
Key facts
- State
- Maine (ME)
- FIPS code
- 23019
- Population
- 153,571
- Median household income
- $63,248
- Median age
- 42.5
- Land area
- 3,397.2 sq mi (8,798.7 km²)
- Population density
- 45 / sq mi
- Area codes
- 207
Cities and ZIP codes in Penobscot County (44)
About this page
County figures are Census county-level values (ACS 5-year); the ZIP list shows the ZIPs whose primary county this is — a ZIP on a border can also serve neighbouring counties.
Sources: U.S. Census Bureau (2020 county relationship file, ACS 5-year) · GeoNames. Methodology.