County · New Hampshire · United States
Hillsborough County ZIP codes
34 ZIP codes · 27 cities · FIPS 33011
Key facts
- State
- New Hampshire (NH)
- FIPS code
- 33011
- Population
- 424,732
- Median household income
- $100,436
- Median age
- 41
- Land area
- 876.5 sq mi (2,270.2 km²)
- Population density
- 485 / sq mi
- Area codes
- 603
Cities and ZIP codes in Hillsborough County (27)
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.