Census tract · Fairfax County
Census Tract 4901.01, Fairfax County, Virginia
Census Tract 4901.01, GEOID 51059490101, in Fairfax County, Virginia, mostly within Centreville (72% of its census blocks). 5,250 residents in the ACS 2020-2024 5-year estimates (±512); the 2020 Census counted 5,064.
Residents, 2020-2024
5,250
±512 (90% margin)
2020 Census count: 5,064
Median household income
$159,934
±$27,101 (90% margin)
Fairfax County: $153,637
Median home value
$668,600
±$24,936 (90% margin)
Fairfax County: $732,800
Median gross rent
$1,816
±$68 (90% margin)
Fairfax County: $2,276
Where is Census Tract 4901.01?
Census Tract 4901.01 is one of 274 census tracts in Fairfax County, Virginia. It covers 1.88 square miles of land, 2,694 residents per square mile in 2020. Its GEOID, 51059490101, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Centreville | 72% |
| Chantilly | 28% |
6 census tracts border Census Tract 4901.01: Tract 4901.05 ($186,007), Tract 4911.02 ($166,976), Tract 4911.03 ($110,978), Tract 4912.01 ($126,923), Tract 4915.02 ($250,000 or more) and Tract 4916.01 ($92,589). The figure in brackets is each tract's median household income.
Whether a tract counts as low- or moderate-income for bank lending (the Community Reinvestment Act) is set by the FFIEC against its metro area's family income: look it up in the FFIEC census geocoder.
Source: 2024 Gazetteer and 2020 block assignment files, U.S. Census Bureau · Census reference files
How many people live in Census Tract 4901.01?
The 2020-2024 American Community Survey puts Census Tract 4901.01's population at 5,250 (±512) in 2,053 households; the 2020 Census counted 5,064 residents and 1,870 housing units.
| Measure | Tract 4901.01 | Centreville |
|---|---|---|
| Total population | 5,250 ±512 | 71,706 |
| Households | 2,053 ±182 | 25,060 |
| Average household size | 2.56 ±0.15 | 2.86 |
| Housing units | 2,084 ±179 | 25,414 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Census Tract 4901.01?
The median resident of Census Tract 4901.01 is 46.1 years old; 17.0% are under 18 and 21.9% are 65 or older. The largest group is non-Hispanic white residents at 46.6%, then non-Hispanic Asian residents at 21.6%. 29.4% of residents were born outside the United States.
| Measure | Tract 4901.01 | Centreville |
|---|---|---|
| Median age | 46.1 ±2.1 | 37.8 |
| Under 18 years | 17.0% ±2.3 pts | 21.7% |
| 65 years and over | 21.9% ±5.1 pts | 11.4% |
| Hispanic or Latino (any race) | 15.6% ±5.8 pts | 19.7% |
| White alone, not Hispanic | 46.6% ±5.5 pts | 38.3% |
| Black or African American alone, not Hispanic | 9.8% ±4.9 pts | 7.4% |
| Asian alone, not Hispanic | 21.6% ±4.3 pts | 28.6% |
| American Indian and Alaska Native alone, not Hispanic | 0.2% ±0.3 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.8 pts | 0.1% |
| Two or more races, not Hispanic | 5.8% ±2.3 pts | 5.3% |
| Some other race alone, not Hispanic | 0.4% ±0.7 pts | 0.5% |
| Born outside the United States | 29.4% ±5.8 pts | 35.6% |
| Speak a language other than English at home (age 5+) | 33.8% ±7.0 pts | 45.5% |
| Civilian veterans (age 18+) | 5.4% ±2.2 pts | 5.5% |
| With a disability | 13.5% ±5.3 pts | 6.2% |
| No health insurance coverage | 1.3% ±0.9 pts | 7.2% |
| High school graduate or higher (age 25+) | 93.4% ±3.5 pts | 94.0% |
| Bachelor's degree or higher (age 25+) | 57.4% ±6.5 pts | 58.2% |
| Graduate or professional degree (age 25+) | 28.3% ±5.0 pts | 24.5% |
| Lived in the same house a year earlier | 87.1% ±5.6 pts | 90.4% |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Census Tract 4901.01 earn?
Half of the 2,053 households in Census Tract 4901.01 earn less than $159,934 a year (±$27,101), against $153,637 across Fairfax County: 132nd highest of the county's 270 tracts with a reliable estimate. 7.8% of residents live below the poverty line.
| Measure | Tract 4901.01 | Centreville |
|---|---|---|
| Median household income | $159,934 ±$27,101 | $139,510 |
| Mean household income | $171,969 ±$15,645 | $168,376 |
| Per capita income | $69,468 ±$6,171 | $60,220 |
| People below the poverty line | 7.8% ±3.8 pts | 7.2% |
| Children under 18 below the poverty line | 9.8% ±9.9 pts | 9.4% |
| Households receiving SNAP | 5.8% ±4.0 pts | 3.3% |
| Households with a computer | 96.5% ±3.1 pts | 99.1% |
| Households with a broadband subscription | 96.3% ±3.2 pts | 98.3% |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Census Tract 4901.01?
Owners occupy 66.0% of Census Tract 4901.01's occupied homes and renters 34.0%. The median owner-occupied home is valued at $668,600 by its owner (±$24,936). The median renter pays $1,816 a month including utilities, and 71.6% of renters pay 35% or more of their income on rent.
| Measure | Tract 4901.01 | Centreville |
|---|---|---|
| Median home value (owner-occupied) | $668,600 ±$24,936 | $590,500 |
| Median gross rent | $1,816 ±$68 | $2,299 |
| Renters paying 35% or more of income on rent | 71.6% ±12.4 pts | 39.7% |
| Median monthly owner costs, with a mortgage | $3,042 ±$187 | $2,751 |
| Owner-occupied homes | 66.0% ±6.1 pts | 73.2% |
| Renter-occupied homes | 34.0% ±6.1 pts | 26.8% |
| Housing units | 2,084 ±179 | 25,414 |
| Single-family detached homes | 45.0% ±5.8 pts | 31.4% |
| Mobile homes | 0.0% ±1.9 pts | 0.1% |
| Built 2020 or later | 0.5% ±0.8 pts | 0.3% |
| Built 2010 to 2019 | 3.9% ±3.3 pts | 4.6% |
| Built 1939 or earlier | 1.2% ±1.3 pts | 0.8% |
| Households with no vehicle | 14.3% ±6.8 pts | 3.4% |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How do people in Census Tract 4901.01 get to work?
59.5% of Census Tract 4901.01's workers drive alone and 27.0% work from home. The average trip to work takes 24.6 minutes. The unemployment rate in 2020-2024 averaged 5.5%.
| Measure | Tract 4901.01 | Centreville |
|---|---|---|
| In the labor force (age 16+) | 70.1% ±5.6 pts | 75.0% |
| Unemployment rate | 5.5% ±2.2 pts | 4.4% |
| Drove alone to work | 59.5% ±5.8 pts | 63.7% |
| Carpooled | 5.0% ±2.6 pts | 9.4% |
| Public transportation | 2.2% ±1.5 pts | 1.8% |
| Walked | 4.1% ±3.2 pts | 1.1% |
| Worked from home | 27.0% ±5.3 pts | 22.4% |
| Mean travel time to work | 24.6 min ±3.1 | 27.5 min |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
How does Census Tract 4901.01 compare with the other tracts in Fairfax County?
Among Fairfax County's tracts with a reliable estimate, Census Tract 4901.01 ranks as shown below (1 = highest).
| Measure | In Fairfax County | In Centreville |
|---|---|---|
| Population | 75th of 271 | 5th of 15 |
| Residents per square mile | 220th of 274 | 14th of 15 |
| Median household income | 132nd of 270 | 6th of 15 |
| Per capita income | 139th of 271 | 5th of 15 |
| Median home value | 147th of 263 | 4th of 14 |
| Median gross rent | 227th of 248 | 13th of 13 |
| Poverty rate | 36th of 70 | 4th of 4 |
| Bachelor's degree or higher | 200th of 270 | 8th of 15 |
| Median age | 38th of 271 | 1st of 15 |
| Owner-occupied share | 174th of 266 | 11th of 14 |
The tracts next to it on Fairfax County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 4805.04 | 129th | $162,250±$14,635 · within the margin of this tract |
| Tract 4826.03 | 130th | $162,200±$21,051 · within the margin of this tract |
| Tract 4604 | 131st | $161,845±$22,181 · within the margin of this tract |
| Tract 4901.01 | 132nd | $159,934±$27,101 |
| Tract 4210.01 | 133rd | $159,000±$41,954 · within the margin of this tract |
| Tract 4405.03 | 134th | $158,194±$72,310 · within the margin of this tract |
| Tract 4822.03 | 135th | $157,500±$32,303 · within the margin of this tract |
"Within the margin": the two incomes differ by less than their combined 90% margins, so the survey cannot say which is higher and the ranks between them are not firm.
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · How ranks are computed
How reliable are the figures for Census Tract 4901.01?
Every figure for Census Tract 4901.01 on this page has a coefficient of variation under 40%, the Census Bureau's threshold for a usable estimate.
A census tract's figures rest on a few hundred sampled households over five years, so its margins are wider than a city's. Two tracts differ only when the gap between them is larger than their combined 90% margin (the square root of the sum of the two squared margins). How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · Check it at data.census.gov
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections