Census tract · St. Louis County
Census Tract 2109.23, St. Louis County, Missouri
Census Tract 2109.23, GEOID 29189210923, in St. Louis County, Missouri, mostly within Florissant (66% of its census blocks). 5,490 residents in the ACS 2020-2024 5-year estimates (±683); the 2020 Census counted 5,399.
Residents, 2020-2024
5,490
±683 (90% margin)
2020 Census count: 5,399
Median household income
$65,543
±$3,237 (90% margin)
St. Louis County: $82,936
Median home value
$155,600
±$9,496 (90% margin)
St. Louis County: $276,800
Median gross rent
$1,599
±$195 (90% margin)
St. Louis County: $1,209
Where is Census Tract 2109.23?
Census Tract 2109.23 is one of 236 census tracts in St. Louis County, Missouri. It covers 0.90 square miles of land, 5,986 residents per square mile in 2020. Its GEOID, 29189210923, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Florissant | 66% |
5 census tracts border Census Tract 2109.23: Tract 2109.21 ($73,925), Tract 2109.24 ($73,354), Tract 2109.26 ($78,614), Tract 2113.01 ($71,377) and Tract 2113.34 ($64,531). 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 2109.23?
The 2020-2024 American Community Survey puts Census Tract 2109.23's population at 5,490 (±683) in 2,186 households; the 2020 Census counted 5,399 residents and 2,031 housing units.
| Measure | Tract 2109.23 | Florissant |
|---|---|---|
| Total population | 5,490 ±683 | 51,773 |
| Households | 2,186 ±246 | 21,229 |
| Average household size | 2.47 ±0.24 | 2.40 |
| Housing units | 2,294 ±250 | 23,064 |
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 2109.23?
The median resident of Census Tract 2109.23 is 38.7 years old; 21.9% are under 18 and 14.4% are 65 or older. The largest group is non-Hispanic Black residents at 46.0%, then non-Hispanic white residents at 43.2%. 5.1% of residents were born outside the United States.
| Measure | Tract 2109.23 | Florissant |
|---|---|---|
| Median age | 38.7 ±5.0 | 37.6 |
| Under 18 years | 21.9% ±5.1 pts | 22.3% |
| 65 years and over | 14.4% ±2.8 pts | 16.1% |
| Hispanic or Latino (any race) | 1.5% ±1.4 pts | 2.4% |
| White alone, not Hispanic | 43.2% ±6.9 pts | 45.4% |
| Black or African American alone, not Hispanic | 46.0% ±7.3 pts | 43.9% |
| Asian alone, not Hispanic | 1.8% ±2.2 pts | 0.9% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.6 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.6 pts | 0.0% |
| Two or more races, not Hispanic | 7.3% ±5.7 pts | 6.8% |
| Some other race alone, not Hispanic | 0.2% ±0.3 pts | 0.5% |
| Born outside the United States | 5.1% ±3.0 pts | 4.1% |
| Speak a language other than English at home (age 5+) | 4.7% ±2.5 pts | 5.8% |
| Civilian veterans (age 18+) | 7.7% ±3.1 pts | 6.8% |
| With a disability | 8.7% ±3.9 pts | 13.5% |
| No health insurance coverage | 9.9% ±4.5 pts | 8.3% |
| High school graduate or higher (age 25+) | 92.7% ±2.9 pts | 92.9% |
| Bachelor's degree or higher (age 25+) | 21.3% ±4.9 pts | 22.5% |
| Graduate or professional degree (age 25+) | 5.4% ±2.6 pts | 6.9% |
| Lived in the same house a year earlier | 85.6% ±7.2 pts | 89.6% |
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 2109.23 earn?
Half of the 2,186 households in Census Tract 2109.23 earn less than $65,543 a year (±$3,237), against $82,936 across St. Louis County: 161st highest of the county's 234 tracts with a reliable estimate. 13.2% of residents live below the poverty line.
| Measure | Tract 2109.23 | Florissant |
|---|---|---|
| Median household income | $65,543 ±$3,237 | $65,318 |
| Mean household income | $86,714 ±$10,127 | $78,554 |
| Per capita income | $36,323 ±$4,707 | $33,549 |
| People below the poverty line | 13.2% ±6.3 pts | 10.1% |
| Children under 18 below the poverty line | 33.6% ±20.3 pts | 18.4% |
| Households receiving SNAP | 10.3% ±5.0 pts | 10.7% |
| Households with a computer | 97.3% ±2.3 pts | 96.7% |
| Households with a broadband subscription | 95.0% ±3.1 pts | 92.6% |
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 2109.23?
Owners occupy 75.7% of Census Tract 2109.23's occupied homes and renters 24.3%. The median owner-occupied home is valued at $155,600 by its owner (±$9,496). The median renter pays $1,599 a month including utilities, and 62.1% of renters pay 35% or more of their income on rent.
| Measure | Tract 2109.23 | Florissant |
|---|---|---|
| Median home value (owner-occupied) | $155,600 ±$9,496 | $148,800 |
| Median gross rent | $1,599 ±$195 | $1,288 |
| Renters paying 35% or more of income on rent | 62.1% ±18.4 pts | 36.8% |
| Median monthly owner costs, with a mortgage | $1,176 ±$58 | $1,235 |
| Owner-occupied homes | 75.7% ±7.3 pts | 67.1% |
| Renter-occupied homes | 24.3% ±7.3 pts | 32.9% |
| Housing units | 2,294 ±250 | 23,064 |
| Single-family detached homes | 98.0% ±2.2 pts | 78.7% |
| Mobile homes | 0.0% ±1.5 pts | 0.2% |
| Built 2020 or later | 0.0% ±1.5 pts | 0.1% |
| Built 2010 to 2019 | 1.8% ±1.6 pts | 0.4% |
| Built 1939 or earlier | 0.0% ±1.5 pts | 1.7% |
| Households with no vehicle | 4.7% ±3.8 pts | 6.5% |
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 2109.23 get to work?
77.7% of Census Tract 2109.23's workers drive alone and 15.5% work from home. The average trip to work takes 27.5 minutes.
| Measure | Tract 2109.23 | Florissant |
|---|---|---|
| In the labor force (age 16+) | 70.1% ±5.5 pts | 70.0% |
| Unemployment rate | 4.7% ±3.4 pts | 5.1% |
| Drove alone to work | 77.7% ±7.3 pts | 75.2% |
| Carpooled | 3.3% ±2.7 pts | 7.4% |
| Public transportation | 0.6% ±1.2 pts | 1.9% |
| Walked | 0.0% ±1.3 pts | 0.9% |
| Worked from home | 15.5% ±5.9 pts | 13.6% |
| Mean travel time to work | 27.5 min ±4.6 | 25.8 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 2109.23 compare with the other tracts in St. Louis County?
Among St. Louis County's tracts with a reliable estimate, Census Tract 2109.23 ranks as shown below (1 = highest).
| Measure | In St. Louis County | In Florissant |
|---|---|---|
| Population | 54th of 236 | 4th of 15 |
| Residents per square mile | 13th of 236 | 1st of 15 |
| Median household income | 161st of 234 | 11th of 15 |
| Per capita income | 164th of 236 | 4th of 15 |
| Median home value | 176th of 233 | 8th of 15 |
| Median gross rent | 41st of 210 | 4th of 14 |
| Poverty rate | 59th of 146 | 3rd of 8 |
| Bachelor's degree or higher | 193rd of 227 | 12th of 15 |
| Median age | 151st of 234 | 5th of 15 |
| Owner-occupied share | 101st of 236 | 4th of 15 |
The tracts next to it on St. Louis County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 2108.03 | 158th | $68,000±$25,334 · within the margin of this tract |
| Tract 2204.48 | 159th | $66,961±$14,622 · within the margin of this tract |
| Tract 2109.25 | 160th | $66,080±$5,290 · within the margin of this tract |
| Tract 2109.23 | 161st | $65,543±$3,237 |
| Tract 2181.04 | 162nd | $65,093±$12,730 · within the margin of this tract |
| Tract 2110.02 | 163rd | $64,864±$13,334 · within the margin of this tract |
| Tract 2205.03 | 164th | $64,830±$26,507 · 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 2109.23?
2 of the 18 figures for Census Tract 2109.23 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