Census tract · St. Louis city
Census Tract 1231, St. Louis city, Missouri
Census Tract 1231, GEOID 29510123100, in St. Louis city, Missouri, entirely within St. Louis. 3,306 residents in the ACS 2020-2024 5-year estimates (±635); the 2020 Census counted 3,235.
Residents, 2020-2024
3,306
±635 (90% margin)
2020 Census count: 3,235
Median household income
$88,875
±$18,961 (90% margin)
St. Louis city: $56,160
Median home value
$268,100
±$52,174 (90% margin)
St. Louis city: $197,500
Median gross rent
$1,183
±$195 (90% margin)
St. Louis city: $997
Where is Census Tract 1231?
Census Tract 1231 is one of 104 census tracts in St. Louis city, Missouri. It covers 0.40 square miles of land, 8,128 residents per square mile in 2020. Its GEOID, 29510123100, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| St. Louis | 100% |
6 census tracts border Census Tract 1231: Tract 1174 ($106,364), Tract 1232 ($68,597), Tract 1233 ($73,977), Tract 1242 ($41,927), Tract 1273 ($53,558) and Tract 1274 ($43,476). 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 1231?
The 2020-2024 American Community Survey puts Census Tract 1231's population at 3,306 (±635) in 1,659 households; the 2020 Census counted 3,235 residents and 1,789 housing units.
| Measure | Tract 1231 | St. Louis |
|---|---|---|
| Total population | 3,306 ±635 | 288,512 |
| Households | 1,659 ±230 | 144,891 |
| Average household size | 1.97 ±0.26 | 1.92 |
| Housing units | 1,891 ±234 | 174,111 |
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 1231?
The median resident of Census Tract 1231 is 38.1 years old; 21.1% are under 18 and 11.6% are 65 or older. The largest group is non-Hispanic white residents at 46.0%, then non-Hispanic Black residents at 40.8%.
| Measure | Tract 1231 | St. Louis |
|---|---|---|
| Median age | 38.1 ±4.5 | 36.8 |
| Under 18 years | 21.1% ±6.8 pts | 18.3% |
| 65 years and over | 11.6% ±3.7 pts | 15.5% |
| Hispanic or Latino (any race) | 7.8% ±4.6 pts | 5.3% |
| White alone, not Hispanic | 46.0% ±11.3 pts | 44.4% |
| Black or African American alone, not Hispanic | 40.8% ±11.2 pts | 42.1% |
| Asian alone, not Hispanic | 1.9% ±2.0 pts | 3.5% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.1 pts | 0.2% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.1 pts | 0.0% |
| Two or more races, not Hispanic | 1.9% ±1.9 pts | 4.0% |
| Some other race alone, not Hispanic | 1.6% ±1.8 pts | 0.5% |
| Born outside the United States | 2.1% ±2.3 pts | 7.1% |
| Speak a language other than English at home (age 5+) | 7.7% ±5.1 pts | 9.4% |
| Civilian veterans (age 18+) | 2.2% ±1.5 pts | 5.6% |
| With a disability | 9.9% ±5.7 pts | 16.8% |
| No health insurance coverage | 5.0% ±2.9 pts | 9.3% |
| High school graduate or higher (age 25+) | 93.7% ±3.7 pts | 90.8% |
| Bachelor's degree or higher (age 25+) | 56.3% ±10.7 pts | 41.1% |
| Graduate or professional degree (age 25+) | 24.4% ±7.2 pts | 18.6% |
| Lived in the same house a year earlier | 89.4% ±5.4 pts | 85.5% |
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 1231 earn?
Half of the 1,659 households in Census Tract 1231 earn less than $88,875 a year (±$18,961), against $56,160 across St. Louis city: 9th highest of the county's 97 tracts with a reliable estimate. 7.9% of residents live below the poverty line.
| Measure | Tract 1231 | St. Louis |
|---|---|---|
| Median household income | $88,875 ±$18,961 | $56,160 |
| Mean household income | $115,226 ±$21,948 | $81,764 |
| Per capita income | $57,588 ±$8,643 | $41,187 |
| People below the poverty line | 7.9% ±4.1 pts | 20.6% |
| Children under 18 below the poverty line | 2.9% ±4.8 pts | 29.7% |
| Households receiving SNAP | 16.0% ±7.7 pts | 18.6% |
| Households with a computer | 97.3% ±2.7 pts | 92.3% |
| Households with a broadband subscription | 95.9% ±2.8 pts | 86.8% |
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 1231?
Owners occupy 61.1% of Census Tract 1231's occupied homes and renters 38.9%. The median owner-occupied home is valued at $268,100 by its owner (±$52,174). The median renter pays $1,183 a month including utilities, and 37.6% of renters pay 35% or more of their income on rent.
| Measure | Tract 1231 | St. Louis |
|---|---|---|
| Median home value (owner-occupied) | $268,100 ±$52,174 | $197,500 |
| Median gross rent | $1,183 ±$195 | $997 |
| Renters paying 35% or more of income on rent | 37.6% ±16.0 pts | 38.1% |
| Median monthly owner costs, with a mortgage | $1,667 ±$369 | $1,487 |
| Owner-occupied homes | 61.1% ±11.0 pts | 45.3% |
| Renter-occupied homes | 38.9% ±11.0 pts | 54.7% |
| Housing units | 1,891 ±234 | 174,111 |
| Single-family detached homes | 43.7% ±9.9 pts | 43.4% |
| Mobile homes | 0.0% ±1.8 pts | 0.5% |
| Built 2020 or later | 0.6% ±0.9 pts | 0.4% |
| Built 2010 to 2019 | 1.8% ±2.0 pts | 3.3% |
| Built 1939 or earlier | 61.8% ±9.5 pts | 57.9% |
| Households with no vehicle | 14.2% ±7.1 pts | 18.5% |
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 1231 get to work?
64.6% of Census Tract 1231's workers drive alone and 19.1% work from home. The average trip to work takes 20.1 minutes.
| Measure | Tract 1231 | St. Louis |
|---|---|---|
| In the labor force (age 16+) | 78.8% ±5.6 pts | 66.5% |
| Unemployment rate | 0.8% ±0.9 pts | 5.0% |
| Drove alone to work | 64.6% ±11.8 pts | 64.1% |
| Carpooled | 4.3% ±4.4 pts | 6.8% |
| Public transportation | 4.6% ±4.1 pts | 5.7% |
| Walked | 2.2% ±1.9 pts | 3.8% |
| Worked from home | 19.1% ±7.7 pts | 17.0% |
| Mean travel time to work | 20.1 min ±3.9 | 22.1 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 1231 compare with the other tracts in St. Louis city?
Among St. Louis city's tracts with a reliable estimate, Census Tract 1231 ranks as shown below (1 = highest).
| Measure | In St. Louis city | In St. Louis |
|---|---|---|
| Population | 36th of 104 | 36th of 104 |
| Residents per square mile | 26th of 104 | 26th of 104 |
| Median household income | 9th of 97 | 9th of 97 |
| Per capita income | 14th of 104 | 14th of 104 |
| Median home value | 22nd of 91 | 22nd of 91 |
| Median gross rent | 20th of 101 | 20th of 101 |
| Poverty rate | 78th of 89 | 78th of 89 |
| Bachelor's degree or higher | 24th of 92 | 24th of 92 |
| Median age | 47th of 104 | 47th of 104 |
| Owner-occupied share | 22nd of 101 | 22nd of 101 |
The tracts next to it on St. Louis city's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 1022 | 6th | $94,216±$15,848 · within the margin of this tract |
| Tract 1163.01 | 7th | $93,385±$20,110 · within the margin of this tract |
| Tract 1012 | 8th | $89,271±$14,147 · within the margin of this tract |
| Tract 1231 | 9th | $88,875±$18,961 |
| Tract 1181 | 10th | $87,738±$14,490 · within the margin of this tract |
| Tract 1162 | 11th | $87,492±$26,381 · within the margin of this tract |
| Tract 1192 | 12th | $86,280±$25,931 · 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 1231?
1 of the 18 figures for Census Tract 1231 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