Nassau County, Florida
County seat: Fernandina Beach · Population 106,879 (2025) · 649 sq mi
Nassau County is the 37th most populous of Florida's 67 counties, with 106,879 people (2025 estimate). Its county seat is Fernandina Beach. It is part of the Northeast Florida region, one of the 10 Florida regional planning council regions. The map shows its 3 cities and towns and the 4 neighboring counties.
Nassau County facts
- County seat
- Fernandina Beach
- Population (2025 estimate)
- 106,879 +18.3% since 2020
- Land area
- 649 sq mi 39th largest of 67
- Water area
- 77 sq mi
- Population density
- 165 per sq mi
- Established
- 1824
- Named after
- Duchy of Nassau state
- Largest city
- Yulee 16,648
- Median household income
- $89,804
- Cities and towns
- 3 plus 2 CDPs
- ZIP codes
- 6
- Time zone
- Eastern
- FIPS code
- 12089
Cities and towns in Nassau County
Nassau County has 3 incorporated cities, towns and villages. Populations count the people living inside Nassau County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Fernandina Beach (county seat) | City | 13,869 | |
| Hilliard | Town | 3,161 | |
| Callahan | Town | 1,830 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Yulee | 16,648 | |
| Nassau Village-Ratliff | 4,737 |
ZIP codes in Nassau County
6 ZIP codes reach into Nassau County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 32009
- 32011
- 32034
- 32046
- 32097
- 32234 also Duval, Clay and Baker counties
Population of Nassau County, 2020–2025
Nassau County grew by 16,520 people (+18.3%) between April 2020 and July 2025: 1,314 more deaths than births and a net gain of 17,783 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 91,040 |
| 2021 | 94,433 |
| 2022 | 97,898 |
| 2023 | 101,625 |
| 2024 | 104,492 |
| 2025 | 106,879 |
Neighboring counties
- Duval County south · 1,062,963 people
- Charlton County, Georgia northwest · 13,121 people
- Camden County, Georgia north · 60,143 people
- Baker County southwest · 29,737 people
Printable Nassau County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (118 KB)
- PNG (2400 px) (94 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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