| County : | Prince William County |
| State : | Virginia (VA) |
| Land Area : | 336.40 sq mi |
| Water Area : | 12.07 sq mi |
| Latitude : | 38.7023317 |
| Longitude : | -77.4788873 |
| Population (2010): | 402,002 |
| Population Estimate (2012) : | 404,011 |
| Population Density : | 1,195.01/sq mi |
| Housing Units (2012) : | 137,115 |
| Median Household Income (2012) : | $96,160 (Virginia : $63,636, USA : $53,046) |
| Median Family Income (2012) : | $105,235 (Virginia : $76,566, USA : $64,585) |
| Median House Price (2012) : | $330,700 (Virginia : $249,700, USA : $181,400) |
Prince William County Cities / Towns
| Buckhall (16,293) | Bull Run (14,983) | Bull Run Mountain Estates (1,251) |
| Cherry Hill (16,000) | County Center (3,270) | Dale City (65,969) |
| Dumfries Town (4,961) | Gainesville (11,481) | Haymarket Town (1,782) |
| Independent Hill (7,419) | Lake Ridge (41,058) | Linton Hall (35,725) |
| Loch Lomond (3,701) | Marumsco (35,036) | Montclair (19,570) |
| Neabsco (12,068) | Nokesville (1,354) | Occoquan Town (934) |
| Potomac Mills (5,614) | Quantico Town (480) | Quantico Base (4,452) |
| Sudley (16,203) | Triangle (8,188) | Woodbridge (4,055) |
| Yorkshire (7,541) |
Prince William County Zip Codes
| 20109 (37,265) | 20110 (43,876) | 20111 (30,590) |
| 20112 (25,833) | 20136 (28,498) | 20137 (1,510) |
| 20143 (1,216) | 20155 (29,411) | 20169 (19,801) |
| 20181 (7,877) | 22025 (17,379) | 22026 (14,258) |
| 22125 (711) | 22134 (6,862) | 22172 (8,699) |
| 22191 (57,598) | 22192 (53,394) | 22193 (73,047) |