Census tract · Orange County
Census Tract 639.10, Orange County, California
Census Tract 639.10, GEOID 06059063910, in Orange County, California, mostly within Costa Mesa (95% of its census blocks). 4,917 residents in the ACS 2020-2024 5-year estimates (±750); the 2020 Census counted 4,356.
Residents, 2020-2024
4,917
±750 (90% margin)
2020 Census count: 4,356
Median household income
$138,587
±$5,240 (90% margin)
Orange County: $116,289
Median home value
$1,087,400
±$145,514 (90% margin)
Orange County: $962,600
Median gross rent
$3,097
±$458 (90% margin)
Orange County: $2,434
Where is Census Tract 639.10?
Census Tract 639.10 is one of 614 census tracts in Orange County, California. It covers 1.62 square miles of land, 2,687 residents per square mile in 2020. Its GEOID, 06059063910, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Costa Mesa | 95% |
8 census tracts border Census Tract 639.10: Tract 638.05 ($127,350), Tract 639.02 ($96,585), Tract 639.03 ($136,696), Tract 639.08 ($106,250), Tract 639.09 ($132,813), Tract 741.06 ($98,594), Tract 741.07 ($112,877) and Tract 992.29 ($74,444). 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 639.10?
The 2020-2024 American Community Survey puts Census Tract 639.10's population at 4,917 (±750) in 1,765 households; the 2020 Census counted 4,356 residents and 1,824 housing units.
| Measure | Tract 639.10 | Costa Mesa |
|---|---|---|
| Total population | 4,917±750 | 110,330 |
| Households | 1,765±232 | 42,292 |
| Average household size | 2.78±0.39 | 2.56 |
| Housing units | 1,850±219 | 44,427 |
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 639.10?
The median resident of Census Tract 639.10 is 38.1 years old; 20.8% are under 18 and 17.0% are 65 or older. The largest group is non-Hispanic white residents at 47.5%, then non-Hispanic Asian residents at 20.4%. 17.1% of residents were born outside the United States.
| Measure | Tract 639.10 | Costa Mesa |
|---|---|---|
| Median age | 38.1±7.0 | 36.7 |
| Under 18 years | 20.8%±7.7 pts | 18.5% |
| 65 years and over | 17.0%±4.9 pts | 13.2% |
| Hispanic or Latino (any race) | 16.7%±5.3 pts | 36.6% |
| White alone, not Hispanic | 47.5%±9.5 pts | 47.5% |
| Black or African American alone, not Hispanic | 1.4%±2.2 pts | 1.7% |
| Asian alone, not Hispanic | 20.4%±6.6 pts | 8.1% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.9 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 4.9%±5.9 pts | 0.6% |
| Two or more races, not Hispanic | 6.3%±3.0 pts | 4.6% |
| Some other race alone, not Hispanic | 2.8%±3.6 pts | 0.7% |
| Born outside the United States | 17.1%±4.3 pts | 22.3% |
| Speak a language other than English at home (age 5+) | 33.2%±7.6 pts | 36.5% |
| Civilian veterans (age 18+) | 5.8%±2.7 pts | 3.5% |
| With a disability | 9.7%±3.0 pts | 9.0% |
| No health insurance coverage | 8.2%±5.4 pts | 9.5% |
| High school graduate or higher (age 25+) | 95.2%±2.3 pts | 88.1% |
| Bachelor's degree or higher (age 25+) | 40.7%±7.0 pts | 45.0% |
| Graduate or professional degree (age 25+) | 11.2%±4.6 pts | 13.4% |
| Lived in the same house a year earlier | 89.8%±6.6 pts | 85.3% |
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 639.10 earn?
Half of the 1,765 households in Census Tract 639.10 earn less than $138,587 a year (±$5,240), against $116,289 across Orange County: 201st highest of the county's 610 tracts with a reliable estimate. 5.5% of residents live below the poverty line.
| Measure | Tract 639.10 | Costa Mesa |
|---|---|---|
| Median household income | $138,587±$5,240 | $111,505 |
| Mean household income | $154,136±$17,530 | $153,254 |
| Per capita income | $55,295±$7,931 | $59,742 |
| People below the poverty line | 5.5%±3.5 pts | 9.1% |
| Children under 18 below the poverty line | 9.2%±10.1 pts | 12.2% |
| Households receiving SNAP | 5.8%±4.0 pts | 8.5% |
| Households with a computer | 98.9%±1.8 pts | 97.8% |
| Households with a broadband subscription | 98.0%±2.1 pts | 95.8% |
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 639.10?
Owners occupy 53.6% of Census Tract 639.10's occupied homes and renters 46.4%. The median owner-occupied home is valued at $1,087,400 by its owner (±$145,514). The median renter pays $3,097 a month including utilities, and 39.2% of renters pay 35% or more of their income on rent.
| Measure | Tract 639.10 | Costa Mesa |
|---|---|---|
| Median home value (owner-occupied) | $1,087,400±$145,514 | $1,115,100 |
| Median gross rent | $3,097±$458 | $2,446 |
| Renters paying 35% or more of income on rent | 39.2%±15.1 pts | 41.5% |
| Median monthly owner costs, with a mortgage | $3,347±$267 | $3,315 |
| Owner-occupied homes | 53.6%±8.9 pts | 39.6% |
| Renter-occupied homes | 46.4%±8.9 pts | 60.4% |
| Housing units | 1,850±219 | 44,427 |
| Single-family detached homes | 56.8%±8.5 pts | 39.3% |
| Mobile homes | 0.0%±2.3 pts | 2.6% |
| Built 2020 or later | 0.0%±2.3 pts | 1.1% |
| Built 2010 to 2019 | 1.0%±1.1 pts | 5.6% |
| Built 1939 or earlier | 0.0%±2.3 pts | 1.5% |
| Households with no vehicle | 1.6%±2.0 pts | 4.8% |
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 639.10 get to work?
67.9% of Census Tract 639.10's workers drive alone and 19.1% work from home. The average trip to work takes 25.6 minutes. The unemployment rate in 2020-2024 averaged 4.0%.
| Measure | Tract 639.10 | Costa Mesa |
|---|---|---|
| In the labor force (age 16+) | 70.9%±5.0 pts | 73.6% |
| Unemployment rate | 4.0%±2.4 pts | 4.7% |
| Drove alone to work | 67.9%±7.0 pts | 62.4% |
| Carpooled | 10.7%±5.0 pts | 8.2% |
| Public transportation | 0.0%±1.6 pts | 1.6% |
| Walked | 2.4%±2.6 pts | 2.1% |
| Worked from home | 19.1%±6.3 pts | 22.2% |
| Mean travel time to work | 25.6 min±3.0 | 22.4 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 639.10 compare with the other tracts in Orange County?
Among Orange County's tracts with a reliable estimate, Census Tract 639.10 ranks as shown below (1 = highest).
| Measure | In Orange County | In Costa Mesa |
|---|---|---|
| Population | 311th of 612 | 9th of 24 |
| Residents per square mile | 551st of 613 | 24th of 24 |
| Median household income | 201st of 610 | 4th of 24 |
| Per capita income | 294th of 612 | 15th of 24 |
| Median home value | 195th of 595 | 13th of 22 |
| Median gross rent | 143rd of 597 | 4th of 24 |
| Poverty rate | 334th of 415 | 16th of 20 |
| Bachelor's degree or higher | 366th of 609 | 16th of 24 |
| Median age | 384th of 611 | 13th of 24 |
| Owner-occupied share | 370th of 605 | 8th of 23 |
The tracts next to it on Orange County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 422.05 | 198th | $138,824±$29,692 · within the margin of this tract |
| Tract 992.37 | 199th | $138,750±$45,305 · within the margin of this tract |
| Tract 1101.06 | 200th | $138,704±$19,546 · within the margin of this tract |
| Tract 639.10 | 201st | $138,587±$5,240 |
| Tract 993.09 | 202nd | $138,396±$28,464 · within the margin of this tract |
| Tract 320.35 | 203rd | $138,322±$24,046 · within the margin of this tract |
| Tract 992.38 | 204th | $138,125±$43,560 · 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 639.10?
1 of the 18 figures for Census Tract 639.10 on this page carries a coefficient of variation over 40% and is marked with a ring: they come from a small sample, so read them as rough.
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