Village · Illinois
Clayton, Illinois
Clayton, village, in Adams County, Illinois. Clayton had 616 residents on July 1, 2025 by the Census Bureau's estimate, down 3.4% since 2020; the 2020 Census counted 639 and the ACS 2020-2024 5-year estimates put it at 602 (±125). GEOID 1714767.
Residents, July 2025 estimate
616
Census Bureau estimate (no margin published)
2020 Census count: 639 · ACS 2020-2024: 602 ±125
Median household income
$66,136
±$12,908 (90% margin)
Illinois: $83,390
Median home value
$91,500
±$8,546 (90% margin)
Illinois: $263,300
Median gross rent
$675
±$585 (90% margin)
Illinois: $1,274
Where is Clayton and what county is it in?
Clayton is a village in Adams County, Illinois. It covers 0.9 square miles of land, 723 residents per square mile in 2020.
Clayton is in the Quincy, IL-MO micropolitan statistical area, which takes in 2 counties (Census Bureau delineation, July 2023).
Clayton lies entirely within Clayton Township (Adams County), a township with its own local government (2020 census blocks).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Clayton, and is it growing?
The Census Bureau estimates that 616 people lived in Clayton on July 1, 2025, down 3.4% since 2020, a steeper fall than Illinois's (−0.8%). The 2020 Census counted 639 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 602 (±125).
| Measure | Clayton | Adams County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 602 ±125 | 64,754 | no clear change |
| Households | 258 ±62 | 27,915 | no clear change |
| Average household size | 1.99 ±0.21 | 2.25 | no clear change |
| Housing units | 308 ±70 | 30,302 | no clear change |
Clayton's population since 2000
From 904 in 2000 to 616 in 2025: down 31.9%. The 2000, 2010 and 2020 figures are census counts, each for Clayton as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Clayton?
The median resident of Clayton is 49.2 years old; 11.3% are under 18 and 25.1% are 65 or older. The largest group is non-Hispanic white residents at 86.5%, then non-Hispanic Black residents at 10.5%.
| Measure | Clayton | Adams County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 49.2 ±8.1 | 41.4 | +8.9 |
| Under 18 years | 11.3% ±5.3 pts | 22.5% | – |
| 65 years and over | 25.1% ±6.8 pts | 20.6% | – |
| Male | 57.1% ±5.4 pts | 49.3% | – |
| Hispanic or Latino (any race) | 0.7% ±1.4 pts | 2.1% | – |
| White alone, not Hispanic | 86.5% ±5.7 pts | 90.0% | −12.5 pts |
| Black or African American alone, not Hispanic | 10.5% ±5.2 pts | 2.8% | – |
| Asian alone, not Hispanic | 0.0% ±6.0 pts | 0.7% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±6.0 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±6.0 pts | 0.0% | – |
| Two or more races, not Hispanic | 2.3% ±1.6 pts | 4.1% | – |
| Some other race alone, not Hispanic | 0.0% ±6.0 pts | 0.2% | – |
| Born outside the United States | 0.0% ±6.0 pts | 1.2% | – |
| Speak a language other than English at home (age 5+) | 0.7% ±1.7 pts | 2.4% | – |
| Civilian veterans (age 18+) | 8.2% ±3.5 pts | 7.7% | – |
| With a disability | 23.9% ±8.4 pts | 18.1% | – |
| No health insurance coverage | 9.3% ±6.2 pts | 4.4% | – |
| High school graduate or higher (age 25+) | 81.2% ±4.9 pts | 93.8% | – |
| Bachelor's degree or higher (age 25+) | 5.7% ±2.8 pts | 27.5% | no clear change |
| Graduate or professional degree (age 25+) | 1.6% ±1.6 pts | 8.8% | – |
| Lived in the same house a year earlier | 83.2% ±10.0 pts | 88.7% | – |
| Moved from another state in the past year | 1.3% ±1.9 pts | 2.5% | – |
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 Clayton earn?
Half of Clayton's 258 households earn less than $66,136 a year (±$12,908), against $66,220 in Adams County and $83,390 in Illinois. In 2015-2019 it was $44,869 in 2024 dollars; the margins of error cannot tell the two periods apart. 12.6% of residents live below the poverty line.
| Measure | Clayton | Adams County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $66,136 ±$12,908 | $66,220 | no clear change |
| Mean household income | $72,570 ±$9,977 | $85,695 | – |
| Per capita income | $32,001 ±$5,040 | $37,595 | no clear change |
| People below the poverty line | 12.6% ±6.3 pts | 12.8% | no clear change |
| Children under 18 below the poverty line | 11.8% ±13.0 pts | 14.3% | – |
| Households receiving SNAP | 20.2% ±8.5 pts | 12.4% | – |
| Households with a computer | 87.6% ±7.3 pts | 91.7% | – |
| Households with a broadband subscription | 72.9% ±12.6 pts | 86.5% | – |
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 Clayton?
Owners occupy 75.6% of Clayton's occupied homes and renters 24.4%. The median owner-occupied home is valued at $91,500 by its owner (±$8,546).
| Measure | Clayton | Adams County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $91,500 ±$8,546 | $162,600 | no clear change |
| Median gross rent | $675 ±$585 | $828 | – |
| Renters paying 35% or more of income on rent | 22.2% ±25.3 pts | 34.6% | – |
| Median monthly owner costs, with a mortgage | $1,078 ±$241 | $1,279 | – |
| Owner-occupied homes | 75.6% ±12.1 pts | 72.1% | no clear change |
| Renter-occupied homes | 24.4% ±12.1 pts | 27.9% | – |
| Housing units | 308 ±70 | 30,302 | no clear change |
| Homeowner vacancy rate | 0.0% ±17.4 pts | 0.2% | – |
| Rental vacancy rate | 19.2% ±18.2 pts | 4.3% | – |
| Single-family detached homes | 79.5% ±8.5 pts | 76.3% | – |
| Mobile homes | 3.9% ±4.0 pts | 4.5% | – |
| Built 2020 or later | 0.0% ±11.4 pts | 0.3% | – |
| Built 2010 to 2019 | 1.3% ±2.0 pts | 4.7% | – |
| Built 1939 or earlier | 20.5% ±7.3 pts | 23.0% | – |
| Households with no vehicle | 7.4% ±5.1 pts | 7.5% | – |
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 many new homes is Clayton building?
Builders took permits for 1 new housing units in Clayton in 2025 (1 in single-family houses), 1.6 per 1,000 residents against 1.5 across Illinois.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Clayton work and get to work?
79.8% of Clayton's workers drive alone and 4.0% work from home. The average trip to work takes 27.9 minutes.
| Measure | Clayton | Adams County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 48.7% ±8.4 pts | 65.2% | – |
| Unemployment rate | 4.2% ±3.6 pts | 3.9% | – |
| Drove alone to work | 79.8% ±8.9 pts | 79.5% | – |
| Carpooled | 11.1% ±6.8 pts | 8.3% | – |
| Public transportation | 1.2% ±1.7 pts | 0.4% | – |
| Walked | 2.4% ±2.4 pts | 2.6% | – |
| Worked from home | 4.0% ±2.4 pts | 7.6% | – |
| Mean travel time to work | 27.9 min ±3.5 | 16.9 min | no clear change |
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 census tracts are in Clayton?
No census tract lies mostly in Clayton; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 102Adams County | 3,789 | $66,007 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Clayton) · Census block assignment files
How does Clayton compare with other places in Illinois?
By the Census Bureau's July 2025 estimates, Clayton is the 12,360th-most populous of the 19,476 U.S. incorporated places that have one and the 792nd-most populous of 1,294 in Illinois.
Clayton is not ranked by income or the other survey measures: those rankings include places of 1,000 or more residents (2020 Census) with a reliable estimate.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 792nd | 1,294 |
Clayton's figures with every place in Illinois (CSV)
Every place in Illinois, sortable · Compare Clayton with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Clayton?
23 of the 57 figures for Clayton 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.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. 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 · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Clayton are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Clayton.