Census tract · Marion County
Census Tract 9518, Marion County, Illinois
Census Tract 9518, GEOID 17121951800, in Marion County, Illinois, mostly within Sandoval Township (94% of its census blocks). 1,987 residents in the ACS 2020-2024 5-year estimates (±285); the 2020 Census counted 2,288.
Residents, 2020-2024
1,987
±285 (90% margin)
2020 Census count: 2,288
Median household income
$53,167
±$12,196 (90% margin)
Marion County: $61,240
Median home value
$74,400
±$27,010 (90% margin)
Marion County: $103,000
Median gross rent
$810
±$306 (90% margin)
Marion County: $794
Where is Census Tract 9518?
Census Tract 9518 is one of 12 census tracts in Marion County, Illinois. It covers 16.63 square miles of land, 138 residents per square mile in 2020. Its GEOID, 17121951800, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Sandoval Township | 94% |
| Sandoval | 56% |
| Junction City | 18% |
| Centralia Township | 6% |
| Central City | 1% |
5 census tracts border Census Tract 9518: Tract 9004.01 in Clinton County ($83,315), Tract 9517 ($86,131), Tract 9519 ($67,571), Tract 9523 ($76,607) and Tract 9527 ($43,229). 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 9518?
The 2020-2024 American Community Survey puts Census Tract 9518's population at 1,987 (±285) in 840 households; the 2020 Census counted 2,288 residents and 971 housing units.
| Measure | Tract 9518 | Sandoval Township |
|---|---|---|
| Total population | 1,987 ±285 | 1,898 |
| Households | 840 ±111 | 782 |
| Average household size | 2.37 ±0.23 | 2.43 |
| Housing units | 1,004 ±110 | 972 |
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 9518?
The median resident of Census Tract 9518 is 41.9 years old; 22.0% are under 18 and 18.3% are 65 or older. The largest group is non-Hispanic white residents at 86.6%, then non-Hispanic residents of two or more races at 6.2%.
| Measure | Tract 9518 | Sandoval Township |
|---|---|---|
| Median age | 41.9 ±5.5 | 41.7 |
| Under 18 years | 22.0% ±3.3 pts | 21.9% |
| 65 years and over | 18.3% ±3.5 pts | 20.1% |
| Hispanic or Latino (any race) | 3.5% ±3.5 pts | 3.7% |
| White alone, not Hispanic | 86.6% ±5.3 pts | 86.0% |
| Black or African American alone, not Hispanic | 1.7% ±1.5 pts | 1.8% |
| Asian alone, not Hispanic | 1.5% ±1.2 pts | 1.5% |
| American Indian and Alaska Native alone, not Hispanic | 0.1% ±0.2 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.9 pts | 0.0% |
| Two or more races, not Hispanic | 6.2% ±3.2 pts | 6.5% |
| Some other race alone, not Hispanic | 0.5% ±0.7 pts | 0.5% |
| Born outside the United States | 1.1% ±1.0 pts | 1.2% |
| Speak a language other than English at home (age 5+) | 2.8% ±2.4 pts | 2.9% |
| Civilian veterans (age 18+) | 6.6% ±2.5 pts | 6.4% |
| With a disability | 23.3% ±6.5 pts | 21.4% |
| No health insurance coverage | 7.1% ±5.3 pts | 7.4% |
| High school graduate or higher (age 25+) | 77.9% ±8.1 pts | 76.7% |
| Bachelor's degree or higher (age 25+) | 8.1% ±2.6 pts | 9.3% |
| Graduate or professional degree (age 25+) | 3.0% ±1.6 pts | 3.9% |
| Lived in the same house a year earlier | 91.4% ±4.1 pts | 89.9% |
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 9518 earn?
Half of the 840 households in Census Tract 9518 earn less than $53,167 a year (±$12,196), against $61,240 across Marion County: 8th highest of the county's 12 tracts with a reliable estimate. 19.7% of residents live below the poverty line.
| Measure | Tract 9518 | Sandoval Township |
|---|---|---|
| Median household income | $53,167 ±$12,196 | $55,103 |
| Mean household income | $60,677 ±$6,851 | $61,330 |
| Per capita income | $26,865 ±$3,100 | $26,619 |
| People below the poverty line | 19.7% ±6.6 pts | 20.2% |
| Children under 18 below the poverty line | 31.9% ±16.8 pts | 33.5% |
| Households receiving SNAP | 34.4% ±6.9 pts | 34.3% |
| Households with a computer | 90.5% ±4.0 pts | 89.8% |
| Households with a broadband subscription | 86.7% ±4.5 pts | 86.3% |
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 9518?
Owners occupy 77.1% of Census Tract 9518's occupied homes and renters 22.9%. The median owner-occupied home is valued at $74,400 by its owner (±$27,010). The median renter pays $810 a month including utilities, and 45.0% of renters pay 35% or more of their income on rent.
| Measure | Tract 9518 | Sandoval Township |
|---|---|---|
| Median home value (owner-occupied) | $74,400 ±$27,010 | $80,000 |
| Median gross rent | $810 ±$306 | $810 |
| Renters paying 35% or more of income on rent | 45.0% ±19.8 pts | 45.0% |
| Median monthly owner costs, with a mortgage | $1,072 ±$105 | $1,097 |
| Owner-occupied homes | 77.1% ±6.4 pts | 75.4% |
| Renter-occupied homes | 22.9% ±6.4 pts | 24.6% |
| Housing units | 1,004 ±110 | 972 |
| Single-family detached homes | 49.2% ±6.2 pts | 50.4% |
| Mobile homes | 41.8% ±6.8 pts | 40.3% |
| Built 2020 or later | 0.4% ±0.6 pts | 0.4% |
| Built 2010 to 2019 | 4.9% ±2.2 pts | 5.0% |
| Built 1939 or earlier | 14.4% ±4.6 pts | 14.2% |
| Households with no vehicle | 8.2% ±3.7 pts | 8.8% |
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 9518 get to work?
85.0% of Census Tract 9518's workers drive alone and 7.0% work from home. The average trip to work takes 22.6 minutes. The unemployment rate in 2020-2024 averaged 7.5%.
| Measure | Tract 9518 | Sandoval Township |
|---|---|---|
| In the labor force (age 16+) | 51.4% ±7.6 pts | 50.0% |
| Unemployment rate | 7.5% ±3.2 pts | 5.2% |
| Drove alone to work | 85.0% ±5.7 pts | 84.7% |
| Carpooled | 6.3% ±3.7 pts | 6.0% |
| Public transportation | 0.0% ±4.9 pts | 0.0% |
| Walked | 0.5% ±0.8 pts | 0.6% |
| Worked from home | 7.0% ±3.6 pts | 7.5% |
| Mean travel time to work | 22.6 min ±3.3 | 22.2 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 9518 compare with the other tracts in Marion County?
Among Marion County's tracts with a reliable estimate, Census Tract 9518 ranks as shown below (1 = highest).
| Measure | In Marion County |
|---|---|
| Population | 12th of 12 |
| Residents per square mile | 7th of 12 |
| Median household income | 8th of 12 |
| Per capita income | 9th of 12 |
| Median home value | 8th of 12 |
| Median gross rent | 5th of 12 |
| Poverty rate | 5th of 12 |
| Bachelor's degree or higher | 11th of 12 |
| Median age | 6th of 12 |
| Owner-occupied share | 6th of 12 |
The tracts next to it on Marion County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 9516 | 5th | $69,879±$6,192 |
| Tract 9519 | 6th | $67,571±$11,056 · within the margin of this tract |
| Tract 9520 | 7th | $64,020±$11,385 · within the margin of this tract |
| Tract 9518 | 8th | $53,167±$12,196 |
| Tract 9521 | 9th | $53,125±$12,643 · within the margin of this tract |
| Tract 9525 | 10th | $45,270±$12,721 · within the margin of this tract |
| Tract 9527 | 11th | $43,229±$10,572 · 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 9518?
3 of the 18 figures for Census Tract 9518 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