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Quarterly Estimates

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The following data attributes are produced quarterly or monthly by the Prince William County GIS Division and other sources. If you are looking for the county's official demographic dataset, please see the Standard Data Dictionary.

QUARTER 3, 2017 (As of 9/30/2017):

Value​%​Units​CurrencySource​Date PostedNotes​
Total Population:​457,253*
people​9/30/2017PWC GIS Division10/20/2017 
Housing Units:
151,962housing units​
9/30/2017
PWC GIS Division​
10/20/2017
Average Household Size: 3.09

Occupancy Rate: 96.28 %

1 Unit, Detached (single-family and mobile homes):​83,879
55.20 %housing units​​9/30/2017PWC GIS Division​10/20/2017

Average Household Size: 3.39

Occupancy Rate: 97.49 %

1 Unit, Attached (townhomes):​37,694
24.80 %housing units​​9/30/2017PWC GIS Division​10/20/2017
Average Household Size: 3.02

Occupancy Rate: 95.83 %

Multi-Unit (includes apartments and condominiums):​30,389
20.00 %housing units​​9/30/2017PWC GIS Division​10/20/2017
Average Household Size: 2.30

Occupancy Rate: 93.40 %

Households (housing units that are occupied):​146,274occupied housing units​​9/30/2017PWC GIS Division​10/20/2017 
​Unemployment Rate:3.4
​rateAug 2017​U.S. Dept. of Labor: Bureau of Labor Statistics10/20/2017The ratio of unemployed to the civilian labor force expressed as a percent [100 * (unemployed/ labor force)​]
Total School Enrollment:89,861
PWCS students​9/30/2017
PWC Public Schools10/20/2017Enrollment in Prince William County Public Schools ​(PWCS)
Pre-Kindergarten through 5th grade:​40,482
45.05 %PWCS students​​9/30/2017PWC Public Schools10/20/2017Enrollment in Prince William County Public Schools ​​(PWCS)
6th grade through 8th grade:​20,713
23.05 %PWCS students​​9/30/2017PWC Public Schools10/20/2017Enrollment in Prince William County Public Schools ​​(PWCS)
9th grade through 12th grade:​27,261
30.34 %PWCS students​​9/30/2017PWC Public Schools10/20/2017Enrollment in Prince William County Public Schools ​​(PWCS)
Other school types:​1,405
1.56 %PWCS students​​9/30/2017PWC Public Schools10/20/2017Enrollment in Prince William County Public Schools ​(PWCS)​

 

*Includes a county group quarters estimate of 5,267 people (updated from 4,104).

NOTES:

  • The quarterly estimates and annual estimates from 2010 to 2016 were restated in February of 2017 to reflect the markedly higher estimates generated starting at 2016 Quarter 3 by smoothing over prior estimates. For a table of the estimate changes and corresponding methods, see the following PDF: Redistributing Quarterly Population Estimates, 2010-2016
  • Estimates of PWC's current population, housing units, and households for 2016 Quarter 3 had differed significantly from 2016 Quarter 2 estimates (and all prior estimates) due to the following:
    • The baseline data used to generate the population estimates changed to a residential unit database housed and maintained by the Department of Information Technology's GIS Division.
    • Updated housing occupancy rate estimates for single-family detached, single-family attached, and multi-family units have been calculated and applied.
    • Updated average household size estimates for single-family detached, single-family attached, and multi-family units have been calculated and applied.
    • Please see the following PDF document for everything you need to know about the methodology behind the new estimates: Detailed methodology: calculation of the quarterly population estimate
  • Compare PWC's estimates to the most current estimates and projections of PWC's population:
    • U.S. Census Annual Estimates of the Resident Population (July 1, 2016): 455,210
    • U.S. Census ACS 1-Year Estimate (July 2015): 451,721
    • Weldon Cooper Center (July 1, 2016): 448,050
    • COG 2020 Projection (Round 9.0): 464,700

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