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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. They are also included in the Prince William County Standard Data Dictionary.

QUARTER 1, 2017 (As of 3/31/2017):

Value​%​Units​CurrencySource​Date PostedNotes​
Total Population:​454,404*
people​3/31/2017PWC GIS Division4/14/2017 
Housing Units:
151,391housing units​3/31/2017PWC GIS Division​4/14/2017
Average Household Size: 3.09

Occupancy Rate: 96.28 %

1 Unit, Detached (single-family and mobile homes):​83,57655.21 %housing units​​3/31/2017PWC GIS Division​4/14/2017

Average Household Size: 3.39

Occupancy Rate: 97.49 %

1 Unit, Attached (townhomes):​37,54924.80 %housing units​​3/31/2017PWC GIS Division​4/14/2017
Average Household Size: 3.02

Occupancy Rate: 95.83 %

Multi-Unit (includes apartments and condominiums):​30,26619.99 %housing units​​3/31/2017PWC GIS Division​4/14/2017
Average Household Size: 2.30

Occupancy Rate: 93.40 %

Households (housing units that are occupied):​145,725occupied housing units​​3/31/2017PWC GIS Division​4/14/2017 
​Unemployment Rate:3.3
​rateApril 2017​U.S. Dept. of Labor: Bureau of Labor Statistics6/1/2017The ratio of unemployed to the civilian labor force expressed as a percent [100 * (unemployed/ labor force)​]
Total School Enrollment:89,320
PWCS students​4/30/2016PWC Public Schools5/25/2017Enrollment in Prince William County Public Schools ​(PWCS)
Pre-Kindergarten through 5th grade:​41,019
45.92 %PWCS students​​4/30/2016PWC Public Schools5/25/2017Enrollment in Prince William County Public Schools ​​(PWCS)
6th grade through 8th grade:​20,229
22.65 %PWCS students​​4/30/2016PWC Public Schools5/25/2017Enrollment in Prince William County Public Schools ​​(PWCS)
9th grade through 12th grade:​26,563
29.74 %PWCS students​​4/30/2016PWC Public Schools5/25/2017Enrollment in Prince William County Public Schools ​​(PWCS)
Other school types:​1,509
1.69 %PWCS students​​4/30/2016PWC Public Schools5/25/2017Enrollment in Prince William County Public Schools ​(PWCS)​

 

*A major update to the GIS Division's residential address dataset in March 2017 resulted in some changes to the status or classification type of housing units and developments. Therefore, the population estimate 'increased' very little between 2016 Quarter 4 and 2017 Quarter 1.

 

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 2015): 448,050
    • COG 2020 Projection (Round 9.0): 465,500

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