Census tract · St. Clair County
Census Tract 5040.02, St. Clair County, Illinois
Census Tract 5040.02, GEOID 17163504002, in St. Clair County, Illinois, partly within Marissa Township, Fayetteville Township, Lenzburg Township, Marissa, Fayetteville, Lenzburg, Engelmann Township, St. Libory, Darmstadt and New Athens. 5,136 residents in the ACS 2020-2024 5-year estimates (±394); the 2020 Census counted 5,511.
Residents, 2020-2024
5,136
±394 (90% margin)
2020 Census count: 5,511
Median household income
$78,235
±$9,054 (90% margin)
St. Clair County: $73,854
Median home value
$167,200
±$8,285 (90% margin)
St. Clair County: $180,300
Median gross rent
$707
±$180 (90% margin)
St. Clair County: $1,090
Where is Census Tract 5040.02?
Census Tract 5040.02 is one of 68 census tracts in St. Clair County, Illinois. It covers 135.90 square miles of land, 41 residents per square mile in 2020. Its GEOID, 17163504002, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Marissa Township | 35% |
| Fayetteville Township | 32% |
| Lenzburg Township | 26% |
| Marissa | 24% |
| Fayetteville | 7% |
| Lenzburg | 7% |
| Engelmann Township | 7% |
| St. Libory | 6% |
| Darmstadt | 2% |
| New Athens | 1% |
10 census tracts border Census Tract 5040.02: Tract 9006.02 in Clinton County ($92,056), Tract 6005.02 in Monroe County ($98,182), Tract 9507 in Randolph County ($56,273), Tract 5039.03 ($162,841), Tract 5039.06 ($107,321), Tract 5040.01 ($93,958), Tract 5043.56 ($115,577), Tract 5043.57 ($84,593), Tract 9502 in Washington County ($91,000) and Tract 9504 in Washington County ($84,020). 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 5040.02?
The 2020-2024 American Community Survey puts Census Tract 5040.02's population at 5,136 (±394) in 2,218 households; the 2020 Census counted 5,511 residents and 2,553 housing units.
| Measure | Tract 5040.02 | St. Clair County |
|---|---|---|
| Total population | 5,136 ±394 | 253,694 |
| Households | 2,218 ±199 | 100,846 |
| Average household size | 2.31 ±0.13 | 2.47 |
| Housing units | 2,650 ±261 | 115,630 |
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 5040.02?
The median resident of Census Tract 5040.02 is 45.4 years old; 21.7% are under 18 and 19.3% are 65 or older. The largest group is non-Hispanic white residents at 94.7%, then non-Hispanic residents of two or more races at 3.5%.
| Measure | Tract 5040.02 | St. Clair County |
|---|---|---|
| Median age | 45.4 ±3.7 | 39.9 |
| Under 18 years | 21.7% ±2.4 pts | 23.0% |
| 65 years and over | 19.3% ±3.2 pts | 17.3% |
| Hispanic or Latino (any race) | 1.6% ±1.1 pts | 5.1% |
| White alone, not Hispanic | 94.7% ±2.5 pts | 59.1% |
| Black or African American alone, not Hispanic | 0.1% ±0.1 pts | 27.7% |
| Asian alone, not Hispanic | 0.0% ±0.7 pts | 1.6% |
| American Indian and Alaska Native alone, not Hispanic | 0.1% ±0.1 pts | 0.2% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.7 pts | 0.0% |
| Two or more races, not Hispanic | 3.5% ±2.2 pts | 5.8% |
| Some other race alone, not Hispanic | 0.0% ±0.7 pts | 0.5% |
| Born outside the United States | 0.2% ±0.2 pts | 3.3% |
| Speak a language other than English at home (age 5+) | 3.4% ±2.8 pts | 5.0% |
| Civilian veterans (age 18+) | 9.3% ±2.8 pts | 11.5% |
| With a disability | 17.0% ±2.9 pts | 15.2% |
| No health insurance coverage | 4.4% ±2.3 pts | 5.1% |
| High school graduate or higher (age 25+) | 94.6% ±2.1 pts | 93.5% |
| Bachelor's degree or higher (age 25+) | 14.1% ±3.2 pts | 31.8% |
| Graduate or professional degree (age 25+) | 4.7% ±1.8 pts | 13.8% |
| Lived in the same house a year earlier | 96.0% ±1.9 pts | 88.3% |
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 5040.02 earn?
Half of the 2,218 households in Census Tract 5040.02 earn less than $78,235 a year (±$9,054), against $73,854 across St. Clair County: 27th highest of the county's 64 tracts with a reliable estimate. 9.0% of residents live below the poverty line.
| Measure | Tract 5040.02 | St. Clair County |
|---|---|---|
| Median household income | $78,235 ±$9,054 | $73,854 |
| Mean household income | $93,145 ±$9,144 | $96,049 |
| Per capita income | $40,644 ±$4,230 | $38,942 |
| People below the poverty line | 9.0% ±2.7 pts | 13.6% |
| Children under 18 below the poverty line | 9.0% ±4.4 pts | 18.9% |
| Households receiving SNAP | 17.7% ±5.4 pts | 16.2% |
| Households with a computer | 95.1% ±2.0 pts | 94.2% |
| Households with a broadband subscription | 88.3% ±3.2 pts | 89.7% |
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 5040.02?
Owners occupy 83.5% of Census Tract 5040.02's occupied homes and renters 16.5%. The median owner-occupied home is valued at $167,200 by its owner (±$8,285). The median renter pays $707 a month including utilities, and 40.4% of renters pay 35% or more of their income on rent.
| Measure | Tract 5040.02 | St. Clair County |
|---|---|---|
| Median home value (owner-occupied) | $167,200 ±$8,285 | $180,300 |
| Median gross rent | $707 ±$180 | $1,090 |
| Renters paying 35% or more of income on rent | 40.4% ±23.9 pts | 39.8% |
| Median monthly owner costs, with a mortgage | $1,578 ±$170 | $1,645 |
| Owner-occupied homes | 83.5% ±5.5 pts | 68.4% |
| Renter-occupied homes | 16.5% ±5.5 pts | 31.6% |
| Housing units | 2,650 ±261 | 115,630 |
| Single-family detached homes | 81.2% ±3.9 pts | 72.1% |
| Mobile homes | 12.6% ±3.4 pts | 4.4% |
| Built 2020 or later | 0.3% ±0.5 pts | 0.9% |
| Built 2010 to 2019 | 2.2% ±1.2 pts | 7.3% |
| Built 1939 or earlier | 22.2% ±5.8 pts | 13.5% |
| Households with no vehicle | 6.3% ±3.9 pts | 7.5% |
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 5040.02 get to work?
82.5% of Census Tract 5040.02's workers drive alone and 11.5% work from home. The average trip to work takes 29.5 minutes. The unemployment rate in 2020-2024 averaged 5.0%.
| Measure | Tract 5040.02 | St. Clair County |
|---|---|---|
| In the labor force (age 16+) | 61.9% ±4.6 pts | 63.4% |
| Unemployment rate | 5.0% ±2.6 pts | 6.0% |
| Drove alone to work | 82.5% ±5.8 pts | 75.4% |
| Carpooled | 3.8% ±2.3 pts | 8.1% |
| Public transportation | 0.1% ±0.2 pts | 1.6% |
| Walked | 1.0% ±0.6 pts | 1.5% |
| Worked from home | 11.5% ±5.3 pts | 12.4% |
| Mean travel time to work | 29.5 min ±2.2 | 24.0 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 5040.02 compare with the other tracts in St. Clair County?
Among St. Clair County's tracts with a reliable estimate, Census Tract 5040.02 ranks as shown below (1 = highest).
| Measure | In St. Clair County |
|---|---|
| Population | 19th of 68 |
| Residents per square mile | 68th of 68 |
| Median household income | 27th of 64 |
| Per capita income | 22nd of 67 |
| Median home value | 28th of 61 |
| Median gross rent | 57th of 60 |
| Poverty rate | 33rd of 43 |
| Bachelor's degree or higher | 50th of 59 |
| Median age | 17th of 66 |
| Owner-occupied share | 17th of 67 |
The tracts next to it on St. Clair County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 5015.01 | 24th | $80,990±$13,410 · within the margin of this tract |
| Tract 5034.12 | 25th | $80,083±$20,995 · within the margin of this tract |
| Tract 5043.52 | 26th | $79,112±$8,903 · within the margin of this tract |
| Tract 5040.02 | 27th | $78,235±$9,054 |
| Tract 5034.14 | 28th | $77,733±$20,244 · within the margin of this tract |
| Tract 5019 | 29th | $75,580±$8,420 · within the margin of this tract |
| Tract 5043.54 | 30th | $74,348±$5,537 · 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 5040.02?
3 of the 18 figures for Census Tract 5040.02 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