Census tract · Sangamon County
Census Tract 18, Sangamon County, Illinois
Census Tract 18, GEOID 17167001800, in Sangamon County, Illinois, mostly within Springfield (99% of its census blocks). 1,820 residents in the ACS 2020-2024 5-year estimates (±406); the 2020 Census counted 1,982.
Residents, 2020-2024
1,820
±406 (90% margin)
2020 Census count: 1,982
Median household income
$50,893
±$17,944 (90% margin)
Sangamon County: $75,357
Median home value
$94,500
±$6,991 (90% margin)
Sangamon County: $176,300
Median gross rent
$1,011
±$129 (90% margin)
Sangamon County: $983
Where is Census Tract 18?
Census Tract 18 is one of 54 census tracts in Sangamon County, Illinois. It covers 0.68 square miles of land, 2,898 residents per square mile in 2020. Its GEOID, 17167001800, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Springfield | 99% |
| Capital Township | 99% |
| Woodside Township | 1% |
7 census tracts border Census Tract 18: Tract 14 ($30,871), Tract 19 ($52,231), Tract 22 ($68,750), Tract 23 ($22,593), Tract 26 ($48,409), Tract 28.01 ($53,902) and Tract 42 ($25,556). 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 18?
The 2020-2024 American Community Survey puts Census Tract 18's population at 1,820 (±406) in 869 households; the 2020 Census counted 1,982 residents and 1,276 housing units.
| Measure | Tract 18 | Springfield |
|---|---|---|
| Total population | 1,820 ±406 | 113,330 |
| Households | 869 ±134 | 51,040 |
| Average household size | 2.06 ±0.34 | 2.15 |
| Housing units | 1,176 ±147 | 57,424 |
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 18?
The median resident of Census Tract 18 is 33.1 years old; 27.7% are under 18 and 10.1% are 65 or older. The largest group is non-Hispanic white residents at 46.1%, then non-Hispanic Black residents at 28.7%.
| Measure | Tract 18 | Springfield |
|---|---|---|
| Median age | 33.1 ±5.4 | 41.0 |
| Under 18 years | 27.7% ±8.8 pts | 20.8% |
| 65 years and over | 10.1% ±3.0 pts | 19.9% |
| Hispanic or Latino (any race) | 18.1% ±15.2 pts | 3.4% |
| White alone, not Hispanic | 46.1% ±12.5 pts | 69.3% |
| Black or African American alone, not Hispanic | 28.7% ±10.4 pts | 19.1% |
| Asian alone, not Hispanic | 0.3% ±0.6 pts | 3.0% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±2.0 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±2.0 pts | 0.0% |
| Two or more races, not Hispanic | 4.6% ±6.0 pts | 4.3% |
| Some other race alone, not Hispanic | 2.3% ±3.6 pts | 0.8% |
| Born outside the United States | 1.7% ±1.9 pts | 4.9% |
| Speak a language other than English at home (age 5+) | 21.1% ±17.3 pts | 6.1% |
| Civilian veterans (age 18+) | 5.4% ±4.2 pts | 6.5% |
| With a disability | 19.3% ±5.9 pts | 15.0% |
| No health insurance coverage | 1.5% ±2.3 pts | 4.1% |
| High school graduate or higher (age 25+) | 91.2% ±4.5 pts | 93.3% |
| Bachelor's degree or higher (age 25+) | 31.5% ±9.7 pts | 36.3% |
| Graduate or professional degree (age 25+) | 13.7% ±7.6 pts | 15.6% |
| Lived in the same house a year earlier | 83.9% ±12.4 pts | 87.3% |
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 18 earn?
Half of the 869 households in Census Tract 18 earn less than $50,893 a year (±$17,944), against $75,357 across Sangamon County: 41st highest of the county's 54 tracts with a reliable estimate. 29.3% of residents live below the poverty line.
| Measure | Tract 18 | Springfield |
|---|---|---|
| Median household income | $50,893 ±$17,944 | $66,064 |
| Mean household income | $65,644 ±$15,536 | $92,959 |
| Per capita income | $28,968 ±$6,308 | $42,670 |
| People below the poverty line | 29.3% ±11.1 pts | 16.8% |
| Children under 18 below the poverty line | 43.3% ±25.8 pts | 24.2% |
| Households receiving SNAP | 34.5% ±9.6 pts | 19.3% |
| Households with a computer | 97.5% ±2.4 pts | 94.6% |
| Households with a broadband subscription | 88.4% ±7.3 pts | 90.1% |
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 18?
Owners occupy 42.6% of Census Tract 18's occupied homes and renters 57.4%. The median owner-occupied home is valued at $94,500 by its owner (±$6,991). The median renter pays $1,011 a month including utilities, and 40.6% of renters pay 35% or more of their income on rent.
| Measure | Tract 18 | Springfield |
|---|---|---|
| Median home value (owner-occupied) | $94,500 ±$6,991 | $162,100 |
| Median gross rent | $1,011 ±$129 | $975 |
| Renters paying 35% or more of income on rent | 40.6% ±12.7 pts | 38.6% |
| Median monthly owner costs, with a mortgage | $986 ±$87 | $1,400 |
| Owner-occupied homes | 42.6% ±8.1 pts | 64.3% |
| Renter-occupied homes | 57.4% ±8.1 pts | 35.7% |
| Housing units | 1,176 ±147 | 57,424 |
| Single-family detached homes | 54.5% ±8.5 pts | 64.9% |
| Mobile homes | 0.0% ±3.1 pts | 3.4% |
| Built 2020 or later | 0.0% ±3.1 pts | 0.4% |
| Built 2010 to 2019 | 0.0% ±3.1 pts | 4.5% |
| Built 1939 or earlier | 61.6% ±7.7 pts | 17.7% |
| Households with no vehicle | 13.8% ±7.3 pts | 10.3% |
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 18 get to work?
72.3% of Census Tract 18's workers drive alone. The average trip to work takes 15.5 minutes.
| Measure | Tract 18 | Springfield |
|---|---|---|
| In the labor force (age 16+) | 66.8% ±5.8 pts | 58.9% |
| Unemployment rate | 7.5% ±7.1 pts | 6.8% |
| Drove alone to work | 72.3% ±9.8 pts | 74.7% |
| Carpooled | 11.3% ±7.2 pts | 6.1% |
| Public transportation | 0.0% ±4.5 pts | 1.3% |
| Walked | 4.9% ±4.8 pts | 1.8% |
| Worked from home | 11.5% ±8.0 pts | 14.5% |
| Mean travel time to work | 15.5 min ±1.8 | 17.4 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 18 compare with the other tracts in Sangamon County?
Among Sangamon County's tracts with a reliable estimate, Census Tract 18 ranks as shown below (1 = highest).
| Measure | In Sangamon County | In Springfield |
|---|---|---|
| Population | 48th of 54 | 34th of 39 |
| Residents per square mile | 18th of 54 | 17th of 39 |
| Median household income | 41st of 54 | 27th of 39 |
| Per capita income | 43rd of 54 | 29th of 39 |
| Median home value | 40th of 53 | 26th of 38 |
| Median gross rent | 24th of 53 | 17th of 39 |
| Poverty rate | 11th of 35 | 11th of 28 |
| Bachelor's degree or higher | 25th of 52 | 17th of 37 |
| Median age | 48th of 54 | 33rd of 39 |
| Owner-occupied share | 46th of 53 | 31st of 38 |
The tracts next to it on Sangamon County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 19 | 38th | $52,231±$6,646 · within the margin of this tract |
| Tract 2.02 | 39th | $51,417±$16,283 · within the margin of this tract |
| Tract 28.02 | 40th | $51,375±$6,300 · within the margin of this tract |
| Tract 18 | 41st | $50,893±$17,944 |
| Tract 5.03 | 42nd | $50,449±$11,683 · within the margin of this tract |
| Tract 7 | 43rd | $49,097±$9,038 · within the margin of this tract |
| Tract 26 | 44th | $48,409±$22,561 · 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 18?
3 of the 18 figures for Census Tract 18 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