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Fairfax County’s population and housing supply each grew 0.3% over the year ending Jan. 1, 2025, while the median value of owner-occupied homes rose substantially faster, according to a demographic report announced by the county on July 28, 2026.
The Demographic Reports 2025 puts the county’s population at 1,199,660 and its housing inventory at 438,664 units as of Jan. 1, 2025. The median market value of owner-occupied housing reached $752,378, an increase of 6.2% from January 2024.
Together, the figures depict a county experiencing limited growth in both residents and housing units alongside a sharper increase in residential property values. The report provides estimates and forecasts covering population, households and housing, as well as information about home values and development activity.
The county also highlighted household income figures from the Census Bureau’s 2024 American Community Survey 1-Year estimate. That estimate placed Fairfax County’s median household income at $154,545, up 9.2% from 2023. The increase followed a 2.5% decline in 2023, which the county characterized as temporary.
Fairfax County’s median income was nearly twice the national median of $81,604 and more than one and a half times Virginia’s median of $92,090 for the same period.
The report announcement also addressed how evenly income is distributed. Fairfax County’s Gini index declined from 0.43 to 0.42 in the 2024 ACS estimate. The index runs from zero, representing perfect equality, to one, representing perfect inequality.
The county’s reported index was below the corresponding measures for the broader Washington, D.C., Maryland and Virginia region, Virginia and the nation. The DMV region registered 0.45, compared with 0.47 statewide and 0.48 nationally. According to the county’s account, income inequality increased across the DMV region during the preceding decade but remained relatively stable within Fairfax County. The supplied announcement did not include annual figures documenting that longer-term comparison.
County officials said the information is intended to help guide local planning and policy decisions.
“These demographic reports provide the localized data necessary to shape policies, plan intelligently and support the evolving needs of Fairfax County’s residents and businesses,” said Phil Hagan, director of the Fairfax County Department of Management and Budget.
Residents and planners can examine information for smaller areas, including supervisory districts, towns, ZIP codes and census tracts. The county’s Demographic Interactive Mapper offers data across 15 types of geography, including census block groups, communities and ZIP-code geographies.
The availability of smaller-area data could allow for closer examination of conditions in Tysons and surrounding communities, but the county announcement supplied for this article did not include Tysons-specific population, housing or income figures.
The timing of the data also limits what the report can show about present conditions. Although Fairfax County announced the report in July 2026, its principal county snapshot reflects conditions on Jan. 1, 2025. Economic developments occurring after that date are not captured in this edition.
The figures in the announcement come from Fairfax County’s description of the report and the cited ACS estimates. The underlying demographic report, ACS tables and interactive mapping data were not included with the supplied material and therefore were not independently checked for this draft.