Prince William County, Virginia
Geography
According to the U.S. Census Bureau, the county has a total area of 348 square miles (900 km²), of which 336 square miles (870 km²) is land and 12 square miles (31 km²) (3.5%) is water.

Prince William County, Virginia

Section Title: Geography
Table Section Text: According to the U.S. Census Bureau, the county has a total area of 348 square miles (900 km²), of which 336 square miles (870 km²) is land and 12 square miles (31 km²) (3.5%) is water.

Name	Area (km²)	Population 2000 Census	Population 2010 Census	Population July 1, 2015 Estimate

Manassas (city)	25.59	35,135	37,821	41,764

Manassas Park (city)	6.55	10,290	14,273	15,726

Prince William County	871.27	280,813	402,002	451,721

Totals	903.41	326,238	454,096	509,211

Sentence(s)

As of the 2010 census, the population of Prince William County's was 402,002 and on July 1, 2015, the population was estimated to be 451,721.

final_sentence: As of the 2010 census, the population of Prince William County's was 402,002 and on July 1, 2015, the population was estimated to be 451,721.