Village · Illinois
Summerfield, Illinois
Summerfield, village, in St. Clair County, Illinois. Summerfield had 336 residents on July 1, 2025 by the Census Bureau's estimate, down 5.1% since 2020; the 2020 Census counted 347 and the ACS 2020-2024 5-year estimates put it at 248 (±90). GEOID 1773547.
Residents, July 2025 estimate
336
Census Bureau estimate (no margin published)
2020 Census count: 347 · ACS 2020-2024: 248 ±90
Median household income
$51,944
±$13,993 (90% margin)
Illinois: $83,390
Median home value
$75,700
±$36,096 (90% margin)
Illinois: $263,300
Median gross rent
$725
±$87 (90% margin)
Illinois: $1,274
Where is Summerfield and what county is it in?
Summerfield is a village in St. Clair County, Illinois. It covers 0.5 square miles of land, 665 residents per square mile in 2020.
Summerfield is in the St. Louis, MO-IL metropolitan statistical area, which takes in 15 counties (Census Bureau delineation, July 2023).
Summerfield lies entirely within Lebanon Township, 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 Summerfield, and is it growing?
The Census Bureau estimates that 336 people lived in Summerfield on July 1, 2025, down 5.1% since 2020, a steeper fall than Illinois's (−0.8%). The 2020 Census counted 347 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 248 (±90).
| Measure | Summerfield | St. Clair County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 248 ±90 | 253,694 | no clear change |
| Households | 120 ±43 | 100,846 | no clear change |
| Average household size | 2.07 ±0.31 | 2.47 | no clear change |
| Housing units | 152 ±50 | 115,630 | no clear change |
Summerfield's population since 2000
From 472 in 2000 to 336 in 2025: down 28.8%. The 2000, 2010 and 2020 figures are census counts, each for Summerfield 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 Summerfield?
The median resident of Summerfield is 46.5 years old; 15.7% are under 18 and 23.8% are 65 or older. The largest group is non-Hispanic white residents at 94.8%, then non-Hispanic residents of two or more races at 2.8%.
| Measure | Summerfield | St. Clair County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 46.5 ±12.8 | 39.9 | no clear change |
| Under 18 years | 15.7% ±7.9 pts | 23.0% | – |
| 65 years and over | 23.8% ±12.0 pts | 17.3% | – |
| Male | 48.8% ±5.6 pts | 48.5% | – |
| Hispanic or Latino (any race) | 2.4% ±3.7 pts | 5.1% | – |
| White alone, not Hispanic | 94.8% ±4.3 pts | 59.1% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±14.0 pts | 27.7% | – |
| Asian alone, not Hispanic | 0.0% ±14.0 pts | 1.6% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±14.0 pts | 0.2% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±14.0 pts | 0.0% | – |
| Two or more races, not Hispanic | 2.8% ±3.0 pts | 5.8% | – |
| Some other race alone, not Hispanic | 0.0% ±14.0 pts | 0.5% | – |
| Born outside the United States | 0.8% ±1.4 pts | 3.3% | – |
| Speak a language other than English at home (age 5+) | 6.2% ±5.3 pts | 5.0% | – |
| Civilian veterans (age 18+) | 8.1% ±5.7 pts | 11.5% | – |
| With a disability | 37.5% ±10.7 pts | 15.2% | – |
| No health insurance coverage | 6.0% ±7.2 pts | 5.1% | – |
| High school graduate or higher (age 25+) | 81.8% ±8.1 pts | 93.5% | – |
| Bachelor's degree or higher (age 25+) | 9.9% ±7.7 pts | 31.8% | – |
| Graduate or professional degree (age 25+) | 2.0% ±2.6 pts | 13.8% | – |
| Lived in the same house a year earlier | 89.9% ±6.2 pts | 88.3% | – |
| Moved from another state in the past year | 3.2% ±3.3 pts | 3.0% | – |
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 Summerfield earn?
Half of Summerfield's 120 households earn less than $51,944 a year (±$13,993), against $73,854 in St. Clair County and $83,390 in Illinois. In 2015-2019 it was $55,039 in 2024 dollars; the margins of error cannot tell the two periods apart. 14.9% of residents live below the poverty line.
| Measure | Summerfield | St. Clair County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $51,944 ±$13,993 | $73,854 | no clear change |
| Mean household income | $65,136 ±$13,089 | $96,049 | – |
| Per capita income | $30,848 ±$6,309 | $38,942 | no clear change |
| People below the poverty line | 14.9% ±9.2 pts | 13.6% | no clear change |
| Children under 18 below the poverty line | 20.5% ±23.6 pts | 18.9% | – |
| Households receiving SNAP | 6.7% ±6.4 pts | 16.2% | – |
| Households with a computer | 94.2% ±5.6 pts | 94.2% | – |
| Households with a broadband subscription | 90.0% ±7.3 pts | 89.7% | – |
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 Summerfield?
Owners occupy 85.0% of Summerfield's occupied homes and renters 15.0%. The median owner-occupied home is valued at $75,700 by its owner (±$36,096). The median renter pays $725 a month including utilities.
| Measure | Summerfield | St. Clair County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $75,700 ±$36,096 | $180,300 | no clear change |
| Median gross rent | $725 ±$87 | $1,090 | −$309 |
| Renters paying 35% or more of income on rent | 37.5% ±45.1 pts | 39.8% | – |
| Median monthly owner costs, with a mortgage | $1,134 ±$52 | $1,645 | – |
| Owner-occupied homes | 85.0% ±11.0 pts | 68.4% | no clear change |
| Renter-occupied homes | 15.0% ±11.0 pts | 31.6% | – |
| Housing units | 152 ±50 | 115,630 | no clear change |
| Homeowner vacancy rate | 0.0% ±29.8 pts | 1.1% | – |
| Rental vacancy rate | 0.0% ±75.1 pts | 4.7% | – |
| Single-family detached homes | 61.8% ±13.6 pts | 72.1% | – |
| Mobile homes | 32.9% ±13.6 pts | 4.4% | – |
| Built 2020 or later | 0.0% ±21.6 pts | 0.9% | – |
| Built 2010 to 2019 | 2.6% ±3.2 pts | 7.3% | – |
| Built 1939 or earlier | 19.1% ±9.8 pts | 13.5% | – |
| Households with no vehicle | 3.3% ±4.1 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 Summerfield building?
Builders took permits for 1 new housing units in Summerfield in 2025 (1 in single-family houses), 3.0 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 Summerfield work and get to work?
88.0% of Summerfield's workers drive alone. The average trip to work takes 25.8 minutes.
| Measure | Summerfield | St. Clair County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 52.6% ±14.2 pts | 63.4% | – |
| Unemployment rate | 10.7% ±14.1 pts | 6.0% | – |
| Drove alone to work | 88.0% ±8.3 pts | 75.4% | – |
| Carpooled | 0.0% ±30.3 pts | 8.1% | – |
| Public transportation | 0.0% ±30.3 pts | 1.6% | – |
| Walked | 0.0% ±30.3 pts | 1.5% | – |
| Worked from home | 12.0% ±8.3 pts | 12.4% | – |
| Mean travel time to work | 25.8 min ±4.2 | 24.0 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 Summerfield?
No census tract lies mostly in Summerfield; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 5043.58St. Clair County | 3,677 | $81,856 |
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 Summerfield) · Census block assignment files
How does Summerfield compare with other places in Illinois?
By the Census Bureau's July 2025 estimates, Summerfield is the 14,760th-most populous of the 19,476 U.S. incorporated places that have one and the 971st-most populous of 1,294 in Illinois.
Summerfield 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 | 971st | 1,294 |
Summerfield's figures with every place in Illinois (CSV)
Every place in Illinois, sortable · Compare Summerfield 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 Summerfield?
28 of the 57 figures for Summerfield 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 Summerfield 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 Summerfield.