Census tract · Adams County
Census Tract 105, Adams County, Illinois
Census Tract 105, GEOID 17001010500, in Adams County, Illinois, mostly within Riverside Township, Adams County (61% of its census blocks). 3,123 residents in the ACS 2020-2024 5-year estimates (±404); the 2020 Census counted 3,069.
Residents, 2020-2024
3,123
±404 (90% margin)
2020 Census count: 3,069
Median household income
$80,182
±$12,107 (90% margin)
Adams County: $66,220
Median home value
$218,900
±$23,563 (90% margin)
Adams County: $162,600
Median gross rent
$865
±$177 (90% margin)
Adams County: $828
Where is Census Tract 105?
Census Tract 105 is one of 19 census tracts in Adams County, Illinois. It covers 18.80 square miles of land, 163 residents per square mile in 2020. Its GEOID, 17001010500, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Riverside Township, Adams County | 61% |
| Quincy | 34% |
| Ellington Township | 4% |
| Melrose Township, Adams County | 1% |
5 census tracts border Census Tract 105: Tract 2.01 ($57,417), Tract 4 ($42,219), Tract 7 ($18,784), Tract 101 ($71,984) and Tract 104 ($102,764). 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 105?
The 2020-2024 American Community Survey puts Census Tract 105's population at 3,123 (±404) in 1,283 households; the 2020 Census counted 3,069 residents and 1,416 housing units.
| Measure | Tract 105 | Riverside Township, Adams County |
|---|---|---|
| Total population | 3,123 ±404 | 2,060 |
| Households | 1,283 ±131 | 809 |
| Average household size | 2.43 ±0.24 | 2.55 |
| Housing units | 1,353 ±112 | 849 |
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 105?
The median resident of Census Tract 105 is 50.6 years old; 22.8% are under 18 and 29.5% are 65 or older. The largest group is non-Hispanic white residents at 94.1%, then Hispanic or Latino residents (of any race) at 3.7%.
| Measure | Tract 105 | Riverside Township, Adams County |
|---|---|---|
| Median age | 50.6 ±6.5 | 48.1 |
| Under 18 years | 22.8% ±4.5 pts | 25.4% |
| 65 years and over | 29.5% ±6.2 pts | 23.3% |
| Hispanic or Latino (any race) | 3.7% ±3.1 pts | 3.7% |
| White alone, not Hispanic | 94.1% ±3.9 pts | 93.5% |
| Black or African American alone, not Hispanic | 1.8% ±2.2 pts | 2.8% |
| Asian alone, not Hispanic | 0.0% ±1.2 pts | 0.0% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.2 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.2 pts | 0.0% |
| Two or more races, not Hispanic | 0.4% ±0.7 pts | 0.0% |
| Some other race alone, not Hispanic | 0.0% ±1.2 pts | 0.0% |
| Born outside the United States | 0.5% ±0.6 pts | 0.4% |
| Speak a language other than English at home (age 5+) | 1.7% ±1.6 pts | 1.1% |
| Civilian veterans (age 18+) | 14.2% ±5.9 pts | 9.0% |
| With a disability | 20.4% ±6.5 pts | 17.5% |
| No health insurance coverage | 3.0% ±3.2 pts | 4.6% |
| High school graduate or higher (age 25+) | 97.9% ±1.9 pts | 98.4% |
| Bachelor's degree or higher (age 25+) | 31.3% ±7.3 pts | 31.7% |
| Graduate or professional degree (age 25+) | 14.4% ±4.7 pts | 11.8% |
| Lived in the same house a year earlier | 91.9% ±4.1 pts | 91.9% |
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 105 earn?
Half of the 1,283 households in Census Tract 105 earn less than $80,182 a year (±$12,107), against $66,220 across Adams County: 4th highest of the county's 19 tracts with a reliable estimate.
| Measure | Tract 105 | Riverside Township, Adams County |
|---|---|---|
| Median household income | $80,182 ±$12,107 | $80,859 |
| Mean household income | $95,356 ±$11,108 | $98,111 |
| Per capita income | $40,254 ±$4,492 | $39,013 |
| People below the poverty line | 4.6% ±5.2 pts | 5.9% |
| Children under 18 below the poverty line | 6.9% ±11.9 pts | 9.4% |
| Households receiving SNAP | 8.3% ±4.1 pts | 13.1% |
| Households with a computer | 89.6% ±6.7 pts | 95.3% |
| Households with a broadband subscription | 87.6% ±7.1 pts | 92.2% |
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 105?
Owners occupy 77.2% of Census Tract 105's occupied homes and renters 22.8%. The median owner-occupied home is valued at $218,900 by its owner (±$23,563). The median renter pays $865 a month including utilities.
| Measure | Tract 105 | Riverside Township, Adams County |
|---|---|---|
| Median home value (owner-occupied) | $218,900 ±$23,563 | $213,300 |
| Median gross rent | $865 ±$177 | $728 |
| Renters paying 35% or more of income on rent | 22.1% ±15.0 pts | 10.6% |
| Median monthly owner costs, with a mortgage | $1,323 ±$131 | $1,344 |
| Owner-occupied homes | 77.2% ±8.7 pts | 83.7% |
| Renter-occupied homes | 22.8% ±8.7 pts | 16.3% |
| Housing units | 1,353 ±112 | 849 |
| Single-family detached homes | 65.0% ±8.3 pts | 77.4% |
| Mobile homes | 8.9% ±5.2 pts | 14.1% |
| Built 2020 or later | 0.8% ±1.3 pts | 0.0% |
| Built 2010 to 2019 | 10.3% ±4.9 pts | 3.5% |
| Built 1939 or earlier | 5.5% ±4.3 pts | 8.7% |
| Households with no vehicle | 2.8% ±2.3 pts | 1.2% |
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 105 get to work?
83.3% of Census Tract 105's workers drive alone and 6.6% work from home. The average trip to work takes 13.7 minutes.
| Measure | Tract 105 | Riverside Township, Adams County |
|---|---|---|
| In the labor force (age 16+) | 56.9% ±6.9 pts | 60.5% |
| Unemployment rate | 2.8% ±2.2 pts | 4.1% |
| Drove alone to work | 83.3% ±7.0 pts | 84.4% |
| Carpooled | 8.2% ±6.0 pts | 9.2% |
| Public transportation | 0.3% ±0.6 pts | 0.0% |
| Walked | 1.6% ±1.6 pts | 0.9% |
| Worked from home | 6.6% ±4.2 pts | 5.5% |
| Mean travel time to work | 13.7 min ±1.6 | 13.1 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 105 compare with the other tracts in Adams County?
Among Adams County's tracts with a reliable estimate, Census Tract 105 ranks as shown below (1 = highest).
| Measure | In Adams County |
|---|---|
| Population | 10th of 19 |
| Residents per square mile | 13th of 19 |
| Median household income | 4th of 19 |
| Per capita income | 6th of 19 |
| Median home value | 3rd of 19 |
| Median gross rent | 11th of 19 |
| Bachelor's degree or higher | 6th of 19 |
| Median age | 1st of 19 |
| Owner-occupied share | 8th of 18 |
The tracts next to it on Adams County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 104 | 1st | $102,764±$11,022 |
| Tract 103.01 | 2nd | $91,378±$14,728 · within the margin of this tract |
| Tract 106 | 3rd | $82,832±$14,741 · within the margin of this tract |
| Tract 105 | 4th | $80,182±$12,107 |
| Tract 2.02 | 5th | $75,117±$7,261 · within the margin of this tract |
| Tract 6 | 6th | $72,907±$19,724 · within the margin of this tract |
| Tract 103.02 | 7th | $72,560±$11,523 · 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 105?
4 of the 18 figures for Census Tract 105 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