Census tract · Bexar County
Census Tract 1818.21, Bexar County, Texas
Census Tract 1818.21, GEOID 48029181821, in Bexar County, Texas, entirely within San Antonio. 3,939 residents in the ACS 2020-2024 5-year estimates (±832); the 2020 Census counted 3,396.
Residents, 2020-2024
3,939
±832 (90% margin)
2020 Census count: 3,396
Median household income
$86,324
±$25,775 (90% margin)
Bexar County: $72,341
Median home value
$264,200
±$26,233 (90% margin)
Bexar County: $262,200
Median gross rent
$1,390
±$110 (90% margin)
Bexar County: $1,354
Where is Census Tract 1818.21?
Census Tract 1818.21 is one of 375 census tracts in Bexar County, Texas. It covers 0.48 square miles of land, 7,031 residents per square mile in 2020. Its GEOID, 48029181821, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| San Antonio | 100% |
5 census tracts border Census Tract 1818.21: Tract 1818.08 ($79,050), Tract 1818.09 ($70,714), Tract 1818.11 ($84,093), Tract 1818.18 ($72,417) and Tract 1818.22 ($85,385). 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 1818.21?
The 2020-2024 American Community Survey puts Census Tract 1818.21's population at 3,939 (±832) in 1,496 households; the 2020 Census counted 3,396 residents and 1,468 housing units.
| Measure | Tract 1818.21 | San Antonio |
|---|---|---|
| Total population | 3,939±832 | 1,479,835 |
| Households | 1,496±190 | 554,581 |
| Average household size | 2.61±0.33 | 2.62 |
| Housing units | 1,555±205 | 612,901 |
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 1818.21?
The median resident of Census Tract 1818.21 is 30.1 years old; 19.2% are under 18 and 11.1% are 65 or older. The largest group is Hispanic or Latino residents (of any race) at 53.3%, then non-Hispanic white residents at 35.1%.
| Measure | Tract 1818.21 | San Antonio |
|---|---|---|
| Median age | 30.1±2.6 | 34.9 |
| Under 18 years | 19.2%±3.0 pts | 23.6% |
| 65 years and over | 11.1%±3.1 pts | 13.4% |
| Hispanic or Latino (any race) | 53.3%±7.1 pts | 64.6% |
| White alone, not Hispanic | 35.1%±6.9 pts | 23.0% |
| Black or African American alone, not Hispanic | 1.6%±1.4 pts | 6.4% |
| Asian alone, not Hispanic | 6.2%±6.5 pts | 2.9% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±1.3 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±1.3 pts | 0.1% |
| Two or more races, not Hispanic | 3.8%±3.4 pts | 2.4% |
| Some other race alone, not Hispanic | 0.0%±1.3 pts | 0.5% |
| Born outside the United States | 9.5%±7.0 pts | 15.0% |
| Speak a language other than English at home (age 5+) | 25.9%±8.2 pts | 40.4% |
| Civilian veterans (age 18+) | 4.6%±2.0 pts | 8.1% |
| With a disability | 14.3%±5.4 pts | 16.0% |
| No health insurance coverage | 14.2%±6.9 pts | 17.6% |
| High school graduate or higher (age 25+) | 90.2%±4.1 pts | 84.6% |
| Bachelor's degree or higher (age 25+) | 41.9%±10.0 pts | 29.0% |
| Graduate or professional degree (age 25+) | 18.3%±6.0 pts | 11.2% |
| Lived in the same house a year earlier | 81.2%±8.8 pts | 82.5% |
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 1818.21 earn?
Half of the 1,496 households in Census Tract 1818.21 earn less than $86,324 a year (±$25,775), against $72,341 across Bexar County: 106th highest of the county's 368 tracts with a reliable estimate. 16.4% of residents live below the poverty line.
| Measure | Tract 1818.21 | San Antonio |
|---|---|---|
| Median household income | $86,324±$25,775 | $65,056 |
| Mean household income | $103,378±$12,972 | $87,658 |
| Per capita income | $39,858±$5,965 | $33,929 |
| People below the poverty line | 16.4%±6.6 pts | 17.1% |
| Children under 18 below the poverty line | 15.2%±12.8 pts | 23.9% |
| Households receiving SNAP | 15.9%±10.4 pts | 15.9% |
| Households with a computer | 98.6%±1.5 pts | 96.2% |
| Households with a broadband subscription | 89.4%±7.5 pts | 91.0% |
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 1818.21?
Owners occupy 60.4% of Census Tract 1818.21's occupied homes and renters 39.6%. The median owner-occupied home is valued at $264,200 by its owner (±$26,233). The median renter pays $1,390 a month including utilities, and 47.0% of renters pay 35% or more of their income on rent.
| Measure | Tract 1818.21 | San Antonio |
|---|---|---|
| Median home value (owner-occupied) | $264,200±$26,233 | $235,700 |
| Median gross rent | $1,390±$110 | $1,324 |
| Renters paying 35% or more of income on rent | 47.0%±18.9 pts | 44.6% |
| Median monthly owner costs, with a mortgage | $1,739±$269 | $1,801 |
| Owner-occupied homes | 60.4%±8.4 pts | 52.2% |
| Renter-occupied homes | 39.6%±8.4 pts | 47.8% |
| Housing units | 1,555±205 | 612,901 |
| Single-family detached homes | 59.5%±8.8 pts | 58.7% |
| Mobile homes | 0.0%±3.2 pts | 1.5% |
| Built 2020 or later | 0.0%±3.2 pts | 2.5% |
| Built 2010 to 2019 | 5.4%±4.0 pts | 12.6% |
| Built 1939 or earlier | 0.0%±3.2 pts | 5.1% |
| Households with no vehicle | 3.1%±2.6 pts | 7.7% |
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 1818.21 get to work?
66.0% of Census Tract 1818.21's workers drive alone and 18.2% work from home. The average trip to work takes 23.4 minutes.
| Measure | Tract 1818.21 | San Antonio |
|---|---|---|
| In the labor force (age 16+) | 69.6%±9.1 pts | 65.5% |
| Unemployment rate | 6.8%±5.6 pts | 6.2% |
| Drove alone to work | 66.0%±7.1 pts | 68.3% |
| Carpooled | 7.4%±6.5 pts | 12.4% |
| Public transportation | 1.0%±1.3 pts | 2.0% |
| Walked | 2.7%±2.9 pts | 1.9% |
| Worked from home | 18.2%±7.2 pts | 13.5% |
| Mean travel time to work | 23.4 min±3.1 | 24.5 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 1818.21 compare with the other tracts in Bexar County?
Among Bexar County's tracts with a reliable estimate, Census Tract 1818.21 ranks as shown below (1 = highest).
| Measure | In Bexar County | In San Antonio |
|---|---|---|
| Population | 255th of 372 | 218th of 318 |
| Residents per square mile | 39th of 375 | 38th of 321 |
| Median household income | 106th of 368 | 80th of 314 |
| Per capita income | 114th of 371 | 87th of 317 |
| Median home value | 136th of 363 | 109th of 311 |
| Median gross rent | 164th of 356 | 131st of 307 |
| Poverty rate | 142nd of 263 | 138th of 235 |
| Bachelor's degree or higher | 106th of 349 | 83rd of 295 |
| Median age | 315th of 372 | 264th of 318 |
| Owner-occupied share | 197th of 362 | 158th of 310 |
The tracts next to it on Bexar County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 1817.03 | 103rd | $87,000±$11,446 · within the margin of this tract |
| Tract 1207.02 | 104th | $86,992±$21,344 · within the margin of this tract |
| Tract 1912.01 | 105th | $86,563±$20,554 · within the margin of this tract |
| Tract 1818.21 | 106th | $86,324±$25,775 |
| Tract 1316.16 | 107th | $86,295±$15,301 · within the margin of this tract |
| Tract 1111 | 108th | $86,250±$14,231 · within the margin of this tract |
| Tract 1414.02 | 109th | $85,778±$15,940 · 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 1818.21?
2 of the 18 figures for Census Tract 1818.21 on this page carry a coefficient of variation over 40% and are 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