Census tract · Madison County
Census Tract 4018, Madison County, Illinois
Census Tract 4018, GEOID 17119401800, in Madison County, Illinois, entirely within Wood River Township. 6,276 residents in the ACS 2020-2024 5-year estimates (±662); the 2020 Census counted 5,977.
Residents, 2020-2024
6,276
±662 (90% margin)
2020 Census count: 5,977
Median household income
$72,391
±$20,038 (90% margin)
Madison County: $75,793
Median home value
$139,800
±$19,794 (90% margin)
Madison County: $173,000
Median gross rent
$816
±$128 (90% margin)
Madison County: $1,024
Where is Census Tract 4018?
Census Tract 4018 is one of 63 census tracts in Madison County, Illinois. It covers 4.44 square miles of land, 1,346 residents per square mile in 2020. Its GEOID, 17119401800, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Wood River Township | 100% |
| Rosewood Heights | 47% |
| East Alton | 21% |
| Wood River | 18% |
| Bethalto | 12% |
5 census tracts border Census Tract 4018: Tract 4011.02 ($69,821), Tract 4013 ($48,299), Tract 4017.01 ($45,843), Tract 4017.21 ($67,572) and Tract 4019.01 ($80,590). 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 4018?
The 2020-2024 American Community Survey puts Census Tract 4018's population at 6,276 (±662) in 2,626 households; the 2020 Census counted 5,977 residents and 2,727 housing units.
| Measure | Tract 4018 | Wood River Township |
|---|---|---|
| Total population | 6,276 ±662 | 29,687 |
| Households | 2,626 ±257 | 13,000 |
| Average household size | 2.38 ±0.22 | 2.28 |
| Housing units | 2,743 ±227 | 14,185 |
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 4018?
The median resident of Census Tract 4018 is 42.1 years old; 20.8% are under 18 and 23.7% are 65 or older. The largest group is non-Hispanic white residents at 92.6%, then Hispanic or Latino residents (of any race) at 3.0%.
| Measure | Tract 4018 | Wood River Township |
|---|---|---|
| Median age | 42.1 ±4.3 | 40.5 |
| Under 18 years | 20.8% ±4.5 pts | 20.1% |
| 65 years and over | 23.7% ±3.8 pts | 18.1% |
| Hispanic or Latino (any race) | 3.0% ±2.7 pts | 2.5% |
| White alone, not Hispanic | 92.6% ±3.9 pts | 90.3% |
| Black or African American alone, not Hispanic | 1.6% ±2.3 pts | 2.4% |
| Asian alone, not Hispanic | 0.0% ±0.6 pts | 0.2% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.6 pts | 0.2% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.6 pts | 0.0% |
| Two or more races, not Hispanic | 2.8% ±2.3 pts | 4.5% |
| Some other race alone, not Hispanic | 0.0% ±0.6 pts | 0.0% |
| Born outside the United States | 0.0% ±0.1 pts | 0.9% |
| Speak a language other than English at home (age 5+) | 0.9% ±0.8 pts | 1.6% |
| Civilian veterans (age 18+) | 8.2% ±2.7 pts | 7.2% |
| With a disability | 18.1% ±4.5 pts | 17.4% |
| No health insurance coverage | 4.1% ±2.3 pts | 5.9% |
| High school graduate or higher (age 25+) | 93.7% ±3.4 pts | 92.0% |
| Bachelor's degree or higher (age 25+) | 21.3% ±6.2 pts | 19.3% |
| Graduate or professional degree (age 25+) | 7.6% ±5.0 pts | 6.5% |
| Lived in the same house a year earlier | 94.1% ±4.4 pts | 88.8% |
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 4018 earn?
Half of the 2,626 households in Census Tract 4018 earn less than $72,391 a year (±$20,038), against $75,793 across Madison County: 28th highest of the county's 63 tracts with a reliable estimate. 8.8% of residents live below the poverty line.
| Measure | Tract 4018 | Wood River Township |
|---|---|---|
| Median household income | $72,391 ±$20,038 | $62,083 |
| Mean household income | $87,571 ±$9,509 | $76,324 |
| Per capita income | $37,294 ±$4,351 | $33,973 |
| People below the poverty line | 8.8% ±5.1 pts | 14.2% |
| Children under 18 below the poverty line | 9.5% ±10.4 pts | 20.4% |
| Households receiving SNAP | 11.4% ±5.7 pts | 17.7% |
| Households with a computer | 84.8% ±6.9 pts | 93.2% |
| Households with a broadband subscription | 83.7% ±6.9 pts | 89.4% |
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 4018?
Owners occupy 89.8% of Census Tract 4018's occupied homes and renters 10.2%. The median owner-occupied home is valued at $139,800 by its owner (±$19,794). The median renter pays $816 a month including utilities, and 59.9% of renters pay 35% or more of their income on rent.
| Measure | Tract 4018 | Wood River Township |
|---|---|---|
| Median home value (owner-occupied) | $139,800 ±$19,794 | $117,300 |
| Median gross rent | $816 ±$128 | $922 |
| Renters paying 35% or more of income on rent | 59.9% ±34.4 pts | 38.0% |
| Median monthly owner costs, with a mortgage | $1,323 ±$97 | $1,195 |
| Owner-occupied homes | 89.8% ±6.6 pts | 74.8% |
| Renter-occupied homes | 10.2% ±6.6 pts | 25.2% |
| Housing units | 2,743 ±227 | 14,185 |
| Single-family detached homes | 91.1% ±5.9 pts | 86.3% |
| Mobile homes | 0.0% ±1.4 pts | 0.9% |
| Built 2020 or later | 0.0% ±1.4 pts | 0.1% |
| Built 2010 to 2019 | 5.5% ±4.7 pts | 3.9% |
| Built 1939 or earlier | 8.9% ±5.5 pts | 17.8% |
| Households with no vehicle | 6.7% ±4.9 pts | 6.0% |
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 4018 get to work?
79.5% of Census Tract 4018's workers drive alone and 13.3% work from home. The average trip to work takes 25.1 minutes.
| Measure | Tract 4018 | Wood River Township |
|---|---|---|
| In the labor force (age 16+) | 60.4% ±6.1 pts | 61.9% |
| Unemployment rate | 2.7% ±1.9 pts | 3.9% |
| Drove alone to work | 79.5% ±7.5 pts | 78.9% |
| Carpooled | 4.4% ±3.3 pts | 7.7% |
| Public transportation | 0.0% ±0.2 pts | 0.5% |
| Walked | 1.0% ±1.7 pts | 1.2% |
| Worked from home | 13.3% ±6.3 pts | 10.2% |
| Mean travel time to work | 25.1 min ±2.8 | 22.8 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 4018 compare with the other tracts in Madison County?
Among Madison County's tracts with a reliable estimate, Census Tract 4018 ranks as shown below (1 = highest).
| Measure | In Madison County |
|---|---|
| Population | 9th of 63 |
| Residents per square mile | 32nd of 63 |
| Median household income | 28th of 63 |
| Per capita income | 32nd of 63 |
| Median home value | 36th of 63 |
| Median gross rent | 55th of 62 |
| Poverty rate | 36th of 49 |
| Bachelor's degree or higher | 39th of 61 |
| Median age | 21st of 63 |
| Owner-occupied share | 10th of 63 |
The tracts next to it on Madison County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 4023 | 25th | $76,479±$7,191 · within the margin of this tract |
| Tract 4030.01 | 26th | $76,023±$6,283 · within the margin of this tract |
| Tract 4034.01 | 27th | $73,569±$9,068 · within the margin of this tract |
| Tract 4018 | 28th | $72,391±$20,038 |
| Tract 4029 | 29th | $72,039±$8,748 · within the margin of this tract |
| Tract 4017.22 | 30th | $71,528±$9,823 · within the margin of this tract |
| Tract 4012 | 31st | $71,250±$20,479 · 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 4018?
3 of the 18 figures for Census Tract 4018 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