Fairfax County VA Information


Fairfax County Subdivisions

Fairfax County VA Data & Demographics (As of July 1, 2017)


Total Population 1,126,302
Daytime Population: Workers 639,993
Daytime Population: Residents 504,437
Total Daytime Population (TDP) 1,144,430
Ratio TDP/Total Population1 1.02
Population in Households 1,116,058
Population in Familes 919,583
Population in Group Qrtrs 10,244
Population Density2 2,881
Diversity Index3 72


Median Household Income $111,963
Average Household Income $150,776
Per Capita Income $54,622


Total Housing Units 423,559 (100%)
Owner Occupied HU 270,459 (63.9%)
Renter Occupied HU 135,671 (32.0%)
Vacant Housing Units 17,429 ( 4.1%)
Median Home Value $518,333
Average Home Value $573,980


Total Households 406,130
Average Household Size 2.75
Family Households 283,638
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.56% 0.6%
Households 0.5% 0.58%
Families 0.36% 0.48%
Median Household Income   1.29%
Per Capita Income   1.98%


Fairfax County VA - Peer Comparisons by Rank and Percentile

The table below compares Fairfax County to the other 133 counties / independent cities and county equivalents in Virginia by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 1 100th
Population Density # 13 91st
Diversity Index # 4 98th
Median Household Income # 3 98th
Per Capita Income # 4 98th

Additional comparisons and rankings can be made with a VERY EASY TO USE Virginia Census Data Comparison Tool.