| ZIP Codes: | 21 ZIP Codes (15 Standard, 6 PO Box, 0 Unique) [See All] |
| Area Codes: | 571 / 703 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:14:12 PM |
| Population: | 501,551 [See All] |
| FIPS: | 51153 |
| CBSA: | Washington-Arlington-Alexandria, DC-VA-MD-WV |
| Land Area: | 368 sq mi |
| Water Area: | 13 sq mi |
| Coordinates: | 38.6938, -77.4393 |
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501,551 residents live across 21 ZIPs covering 368 sq mi, served by 11 distinct USPS-recognized cities.
Population moved from 439,452 to 501,551 from 2014 to 2024 — a +14.1% change. 14 ZIPs gained residents, 2 lost.
The county's wealthiest ZIP 20169 (Haymarket, $203,051 median) and poorest ZIP 22134 (Quantico, $70,268) are 30.6 miles apart — a 2.9× income gap across local geography.
Median home values vary 3.3× across this county — from $321,700 in 22134 (Quantico) to $1,057,900 in 20143 (Catharpin).
Density varies 29× across the county — from 154 people/sq mi in 20181 (Nokesville) to 4,496 in 22193 (Woodbridge).
Educational attainment ranges from 32.7% bachelor's+ in 20111 (Manassas) to 65.2% in 20169 (Haymarket) — the breadth of educational profiles across the area.
Within Virginia, this is the #2 most populous of 134 counties and ranks #5 for median household income with the #18 fastest decade growth .
On the national stage, Prince William County is ranks #32 for income .
Weighted by population, the typical household earns about $133,763 across the county — reflecting what a typical resident sees, not a simple ZIP average.
44.5% of adults age 25+ hold a bachelor's degree or higher (144,136 of 324,135 reporting).
15 Standard delivery, 6 PO Box only, 0 single-entity Unique ZIPs serve this county.
1 ZIP in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 22193 | Woodbridge | Standard | 81,588 | $117,337 | 18.1 | 4.0% |
| 22191 | Woodbridge | Standard | 73,623 | $109,316 | 20.4 | 14.0% |
| 22192 | Woodbridge | Standard | 59,794 | $127,177 | 20.5 | 7.9% |
| 20109 | Manassas | Standard | 45,444 | $89,962 | 22.6 | 27.3% |
| 20111 | Manassas | Standard | 38,124 | $113,879 | 16.6 | 16.8% |
| 20155 | Gainesville | Standard | 37,486 | $164,279 | 26.0 | 16.9% |
| 20136 | Bristow | Standard | 32,325 | $183,750 | 15.1 | 3.1% |
| 20112 | Manassas | Standard | 30,500 | $195,467 | 38.4 | 12.2% |
| 20169 | Haymarket | Standard | 28,089 | $203,051 | 37.8 | 30.8% |
| 22026 | Dumfries | Standard | 22,897 | $124,318 | 9.9 | 45.9% |
| 22025 | Dumfries | Standard | 19,356 | $150,306 | 7.1 | 12.4% |
| 22172 | Triangle | Standard | 11,490 | $109,956 | 49.2 | 23.1% |
| 20181 | Nokesville | Standard | 10,774 | $164,167 | 69.9 | 37.4% |
| 22134 | Quantico | Standard | 8,310 | $70,268 | 9.3 | -1.6% |
| 20143 | Catharpin | Standard | 1,070 | $176,250 | 6.5 | -21.1% |
| 22125 | Occoquan | PO Box | 681 | $161,364 | 0.2 | 1.8% |
| 20156 | Gainesville | PO Box | — | — | 0.0 | — |
| 20182 | Nokesville | PO Box | — | — | 0.0 | — |
| 22194 | Woodbridge | PO Box | — | — | 0.0 | — |
| 22195 | Woodbridge | PO Box | — | — | 0.0 | — |
| 20168 | Haymarket | PO Box | — | — | 0.0 | — |