Census tract · Rock Island County
Census Tract 230, Rock Island County, Illinois
Census Tract 230, GEOID 17161023000, in Rock Island County, Illinois, mostly within South Rock Island Township (90% of its census blocks). 3,755 residents in the ACS 2020-2024 5-year estimates (±256); the 2020 Census counted 3,998.
Residents, 2020-2024
3,755
±256 (90% margin)
2020 Census count: 3,998
Median household income
$100,422
±$13,861 (90% margin)
Rock Island County: $67,159
Median home value
$166,200
±$11,671 (90% margin)
Rock Island County: $150,400
Median gross rent
$966
±$168 (90% margin)
Rock Island County: $889
Where is Census Tract 230?
Census Tract 230 is one of 43 census tracts in Rock Island County, Illinois. It covers 1.81 square miles of land, 2,213 residents per square mile in 2020. Its GEOID, 17161023000, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| South Rock Island Township | 90% |
| Rock Island | 88% |
| South Moline Township | 7% |
| Moline Township | 3% |
6 census tracts border Census Tract 230: Tract 219 ($34,221), Tract 221 ($71,181), Tract 229 ($68,200), Tract 231 ($78,194), Tract 232 ($72,872) and Tract 243 ($47,328). 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 230?
The 2020-2024 American Community Survey puts Census Tract 230's population at 3,755 (±256) in 1,794 households; the 2020 Census counted 3,998 residents and 1,865 housing units.
| Measure | Tract 230 | South Rock Island Township |
|---|---|---|
| Total population | 3,755 ±256 | 18,160 |
| Households | 1,794 ±145 | 8,754 |
| Average household size | 2.07 ±0.10 | 2.04 |
| Housing units | 1,815 ±135 | 9,033 |
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 230?
The median resident of Census Tract 230 is 48.7 years old; 17.2% are under 18 and 28.7% are 65 or older. The largest group is non-Hispanic white residents at 85.0%, then non-Hispanic Black residents at 4.3%.
| Measure | Tract 230 | South Rock Island Township |
|---|---|---|
| Median age | 48.7 ±4.7 | 43.2 |
| Under 18 years | 17.2% ±2.2 pts | 20.3% |
| 65 years and over | 28.7% ±3.6 pts | 22.6% |
| Hispanic or Latino (any race) | 3.6% ±1.8 pts | 9.0% |
| White alone, not Hispanic | 85.0% ±5.6 pts | 70.6% |
| Black or African American alone, not Hispanic | 4.3% ±2.8 pts | 11.9% |
| Asian alone, not Hispanic | 4.1% ±3.5 pts | 5.2% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.0 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.0 pts | 0.0% |
| Two or more races, not Hispanic | 2.8% ±3.3 pts | 3.0% |
| Some other race alone, not Hispanic | 0.2% ±0.3 pts | 0.2% |
| Born outside the United States | 3.6% ±2.4 pts | 6.3% |
| Speak a language other than English at home (age 5+) | 4.8% ±4.1 pts | 9.5% |
| Civilian veterans (age 18+) | 8.9% ±2.4 pts | 8.5% |
| With a disability | 11.5% ±2.5 pts | 17.9% |
| No health insurance coverage | 3.4% ±2.1 pts | 5.9% |
| High school graduate or higher (age 25+) | 98.4% ±1.3 pts | 93.7% |
| Bachelor's degree or higher (age 25+) | 40.6% ±6.7 pts | 28.2% |
| Graduate or professional degree (age 25+) | 16.8% ±5.3 pts | 12.6% |
| Lived in the same house a year earlier | 92.9% ±4.5 pts | 89.5% |
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 230 earn?
Half of the 1,794 households in Census Tract 230 earn less than $100,422 a year (±$13,861), against $67,159 across Rock Island County: 3rd highest of the county's 42 tracts with a reliable estimate.
| Measure | Tract 230 | South Rock Island Township |
|---|---|---|
| Median household income | $100,422 ±$13,861 | $69,711 |
| Mean household income | $136,405 ±$29,100 | $88,439 |
| Per capita income | $65,873 ±$14,896 | $42,505 |
| People below the poverty line | 5.6% ±3.8 pts | 12.4% |
| Children under 18 below the poverty line | 8.2% ±11.4 pts | 15.0% |
| Households receiving SNAP | 0.0% ±2.1 pts | 15.4% |
| Households with a computer | 97.5% ±2.0 pts | 95.9% |
| Households with a broadband subscription | 93.8% ±3.1 pts | 90.0% |
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 230?
Owners occupy 87.2% of Census Tract 230's occupied homes and renters 12.8%. The median owner-occupied home is valued at $166,200 by its owner (±$11,671). The median renter pays $966 a month including utilities.
| Measure | Tract 230 | South Rock Island Township |
|---|---|---|
| Median home value (owner-occupied) | $166,200 ±$11,671 | $139,000 |
| Median gross rent | $966 ±$168 | $834 |
| Renters paying 35% or more of income on rent | 22.1% ±22.2 pts | 29.0% |
| Median monthly owner costs, with a mortgage | $1,599 ±$113 | $1,317 |
| Owner-occupied homes | 87.2% ±5.4 pts | 72.7% |
| Renter-occupied homes | 12.8% ±5.4 pts | 27.3% |
| Housing units | 1,815 ±135 | 9,033 |
| Single-family detached homes | 83.7% ±5.3 pts | 76.0% |
| Mobile homes | 0.9% ±1.4 pts | 0.2% |
| Built 2020 or later | 0.0% ±2.0 pts | 0.0% |
| Built 2010 to 2019 | 2.0% ±1.6 pts | 2.6% |
| Built 1939 or earlier | 4.6% ±3.4 pts | 20.6% |
| Households with no vehicle | 0.9% ±1.1 pts | 9.2% |
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 230 get to work?
76.5% of Census Tract 230's workers drive alone and 16.6% work from home. The average trip to work takes 17.8 minutes.
| Measure | Tract 230 | South Rock Island Township |
|---|---|---|
| In the labor force (age 16+) | 63.0% ±4.4 pts | 62.7% |
| Unemployment rate | 2.5% ±2.0 pts | 6.0% |
| Drove alone to work | 76.5% ±6.4 pts | 79.0% |
| Carpooled | 6.1% ±3.1 pts | 5.9% |
| Public transportation | 0.0% ±1.9 pts | 1.6% |
| Walked | 0.5% ±0.8 pts | 1.5% |
| Worked from home | 16.6% ±6.4 pts | 10.8% |
| Mean travel time to work | 17.8 min ±2.6 | 20.1 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 230 compare with the other tracts in Rock Island County?
Among Rock Island County's tracts with a reliable estimate, Census Tract 230 ranks as shown below (1 = highest).
| Measure | In Rock Island County |
|---|---|
| Population | 19th of 43 |
| Residents per square mile | 22nd of 43 |
| Median household income | 3rd of 42 |
| Per capita income | 1st of 43 |
| Median home value | 13th of 43 |
| Median gross rent | 14th of 42 |
| Bachelor's degree or higher | 1st of 42 |
| Median age | 4th of 43 |
| Owner-occupied share | 5th of 43 |
The tracts next to it on Rock Island County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 201.02 | 1st | $113,083±$11,937 · within the margin of this tract |
| Tract 241.01 | 2nd | $100,750±$15,524 · within the margin of this tract |
| Tract 230 | 3rd | $100,422±$13,861 |
| Tract 241.03 | 4th | $96,902±$11,504 · within the margin of this tract |
| Tract 240 | 5th | $96,250±$16,898 · within the margin of this tract |
| Tract 220 | 6th | $90,991±$5,232 · 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 230?
2 of the 18 figures for Census Tract 230 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