| ZIP Codes: | 28 ZIP Codes (11 Standard, 4 PO Box, 13 Unique) [See All] |
| Area Codes: | 571 / 703 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:14:07 PM |
| Population: | 236,745 [See All] |
| FIPS: | 51013 |
| CBSA: | Washington-Arlington-Alexandria, DC-VA-MD-WV |
| Land Area: | 26 sq mi |
| Water Area: | 0 sq mi |
| Coordinates: | 38.8723, -77.0851 |
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236,745 residents live across 28 ZIPs covering 26 sq mi, served by 2 distinct USPS-recognized cities.
Population moved from 220,689 to 236,745 from 2014 to 2024 — a +7.3% change. 8 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 22207 (Arlington, $245,745 median) and poorest ZIP 22204 (Arlington, $107,941) are 3.6 miles apart — a 2.3× income gap across local geography.
Median home values vary 2.1× across this county — from $586,000 in 22206 (Arlington) to $1,257,900 in 22207 (Arlington).
Density varies 4× across the county — from 5,491 people/sq mi in 22207 (Arlington) to 19,355 in 22209 (Arlington).
Most of the decade's growth concentrated around Arlington — top growth ZIPs averaged +22.1% over the past ten years ( 22202 , 22209 and 22213 ).
Educational attainment ranges from 60.0% bachelor's+ in 22204 (Arlington) to 86.7% in 22201 (Arlington) — the breadth of educational profiles across the area.
Within Virginia, this is the #8 most populous of 134 counties and ranks #3 for median household income with the #37 fastest decade growth .
On the national stage, Arlington County is ranks #8 for income .
Hosts 4 single-entity Unique ZIPs: 22243Naval Air System Command ; 22217Office Of Naval Research ; 22230National Science Foundation ; and 22241Naval Supply System Command .
Weighted by population, the typical household earns about $153,784 across the county — reflecting what a typical resident sees, not a simple ZIP average.
77.0% of adults age 25+ hold a bachelor's degree or higher (134,379 of 174,431 reporting). The most-educated ZIPs cluster around Arlington.
11 Standard delivery, 4 PO Box only, 13 single-entity Unique ZIPs serve this county.
8 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
13 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 22204 | Arlington | Standard | 51,921 | $107,941 | 4.1 | -1.1% |
| 22201 | Arlington | Standard | 37,473 | $145,000 | 2.3 | 8.8% |
| 22207 | Arlington | Standard | 35,479 | $245,745 | 6.5 | 5.7% |
| 22202 | Arlington | Standard | 27,715 | $133,762 | 3.9 | 27.8% |
| 22203 | Arlington | Standard | 26,594 | $140,135 | 1.6 | 14.3% |
| 22206 | Arlington | Standard | 20,703 | $140,877 | 2.1 | 1.8% |
| 22205 | Arlington | Standard | 17,738 | $201,094 | 2.8 | -6.0% |
| 22209 | Arlington | Standard | 14,154 | $120,515 | 0.7 | 22.5% |
| 22213 | Arlington | Standard | 4,021 | $199,306 | 0.6 | 15.9% |
| 22211 | Fort Myer | Standard | 947 | $238,750 | 1.6 | 3.2% |
| 22214 | Arlington | Standard | 0 | — | 0.1 | -100.0% |
| 22243 | Arlington | Unique | — | — | 0.0 | — |
| 22217 | Arlington | Unique | — | — | 0.0 | — |
| 22230 | Arlington | Unique | — | — | 0.0 | — |
| 22241 | Arlington | Unique | — | — | 0.0 | — |
| 22246 | Arlington | Unique | — | — | 0.0 | — |
| 22242 | Arlington | Unique | — | — | 0.0 | — |
| 22245 | Arlington | Unique | — | — | 0.0 | — |
| 22227 | Arlington | Unique | — | — | 0.0 | — |
| 22244 | Arlington | Unique | — | — | 0.0 | — |
| 22240 | Arlington | Unique | — | — | 0.0 | — |
| 22215 | Arlington | PO Box | — | — | 0.0 | — |
| 22219 | Arlington | PO Box | — | — | 0.0 | — |
| 22216 | Arlington | PO Box | — | — | 0.0 | — |
| 22226 | Arlington | Unique | — | — | 0.0 | — |
| 22212 | Arlington | Unique | — | — | 0.0 | — |
| 22225 | Arlington | Unique | — | — | 0.0 | — |
| 22210 | Arlington | PO Box | — | — | 0.0 | — |