Arlington County, Virginia
County seat: Arlington · Population 243,931 (2025) · 26 sq mi
Arlington County is the 8th most populous of Virginia's 133 counties, with 243,931 people (2025 estimate). Its county seat is Arlington. It is part of the Northern Virginia Regional Commission (PD 8) region, one of the 21 Planning District Commissions of Virginia. The map shows its 0 cities and towns and the 5 neighboring counties.
Arlington County facts
- County seat
- Arlington
- Population (2025 estimate)
- 243,931 +2.2% since 2020
- Land area
- 26 sq mi 106th largest of 133
- Water area
- 0 sq mi
- Population density
- 9,383 per sq mi
- Established
- 1846
- Named after
- Arlington House, The Robert E. Lee Memorial historic Custis family mansion operated by the U.S. National Park Service, located within Arlington National Cemetery
- Largest city
- Arlington 236,254
- Median household income
- $142,114
- Cities and towns
- 0 plus 1 CDPs
- ZIP codes
- 12
- Time zone
- Eastern
- FIPS code
- 51013
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Arlington | 236,254 |
ZIP codes in Arlington County
12 ZIP codes reach into Arlington County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 22101 also Fairfax County
- 22201
- 22202
- 22203 also Fairfax County
- 22204
- 22205
- 22206 also Alexandria city
- 22207 also Fairfax County
- 22209
- 22211
- 22213
- 22214
Population of Arlington County, 2020–2025
Arlington County grew by 5,284 people (+2.2%) between April 2020 and July 2025: 7,208 more births than deaths and a net loss of 1,683 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 238,825 |
| 2021 | 233,485 |
| 2022 | 233,476 |
| 2023 | 234,369 |
| 2024 | 239,687 |
| 2025 | 243,931 |
Neighboring counties
- District of Columbia, District of Columbia east · 693,645 people
- Fairfax County west · 1,167,873 people
- Alexandria city south · 160,662 people
- Falls Church city west · 15,159 people
- Montgomery County, Maryland north · 1,074,582 people
Printable Arlington 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) (85 KB)
- PNG (2400 px) (74 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.
Back to the Virginia county map with all 133 counties. Found an error? Tell us.