Village · Illinois
Thompsonville, Illinois
Thompsonville, village, in Franklin County, Illinois. Thompsonville had 477 residents on July 1, 2025 by the Census Bureau's estimate, down 1.9% since 2020; the 2020 Census counted 486 and the ACS 2020-2024 5-year estimates put it at 500 (±140). GEOID 1775159.
Residents, July 2025 estimate
477
Census Bureau estimate (no margin published)
2020 Census count: 486 · ACS 2020-2024: 500 ±140
Median household income
$46,058
±$9,872 (90% margin)
Illinois: $83,390
Median home value
$84,500
±$10,638 (90% margin)
Illinois: $263,300
Median gross rent
$674
±$59 (90% margin)
Illinois: $1,274
Where is Thompsonville and what county is it in?
Thompsonville is a village in Franklin County, Illinois. It covers 2.0 square miles of land, 239 residents per square mile in 2020.
Thompsonville lies entirely within Cave 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 Thompsonville, and is it growing?
The Census Bureau estimates that 477 people lived in Thompsonville on July 1, 2025, down 1.9% since 2020, a steeper fall than Illinois's (−0.8%). The 2020 Census counted 486 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 500 (±140).
| Measure | Thompsonville | Franklin County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 500 ±140 | 37,323 | no clear change |
| Households | 235 ±63 | 16,137 | no clear change |
| Average household size | 2.13 ±0.41 | 2.28 | no clear change |
| Housing units | 283 ±70 | 18,462 | no clear change |
Thompsonville's population since 2000
From 571 in 2000 to 477 in 2025: down 16.5%. The 2000, 2010 and 2020 figures are census counts, each for Thompsonville 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 Thompsonville?
The median resident of Thompsonville is 40.3 years old; 24.6% are under 18 and 19.4% are 65 or older. The largest group is non-Hispanic white residents at 92.4%, then Hispanic or Latino residents (of any race) at 3.6%.
| Measure | Thompsonville | Franklin County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 40.3 ±11.2 | 43.4 | no clear change |
| Under 18 years | 24.6% ±8.5 pts | 22.1% | – |
| 65 years and over | 19.4% ±8.5 pts | 21.0% | – |
| Male | 45.6% ±8.7 pts | 49.7% | – |
| Hispanic or Latino (any race) | 3.6% ±5.8 pts | 2.0% | – |
| White alone, not Hispanic | 92.4% ±6.4 pts | 94.1% | no clear change |
| Black or African American alone, not Hispanic | 0.4% ±0.7 pts | 0.4% | – |
| Asian alone, not Hispanic | 0.4% ±0.8 pts | 0.4% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±7.2 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±7.2 pts | 0.0% | – |
| Two or more races, not Hispanic | 2.8% ±2.7 pts | 2.8% | – |
| Some other race alone, not Hispanic | 0.4% ±0.6 pts | 0.2% | – |
| Born outside the United States | 0.8% ±0.9 pts | 1.2% | – |
| Speak a language other than English at home (age 5+) | 4.6% ±6.7 pts | 2.7% | – |
| Civilian veterans (age 18+) | 5.6% ±3.4 pts | 8.2% | – |
| With a disability | 25.8% ±10.0 pts | 21.3% | – |
| No health insurance coverage | 9.2% ±7.7 pts | 7.3% | – |
| High school graduate or higher (age 25+) | 77.2% ±11.7 pts | 89.6% | – |
| Bachelor's degree or higher (age 25+) | 12.2% ±6.8 pts | 15.8% | no clear change |
| Graduate or professional degree (age 25+) | 4.9% ±6.0 pts | 5.1% | – |
| Lived in the same house a year earlier | 75.3% ±14.7 pts | 88.2% | – |
| Moved from another state in the past year | 1.0% ±1.7 pts | 0.7% | – |
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 Thompsonville earn?
Half of Thompsonville's 235 households earn less than $46,058 a year (±$9,872), against $56,740 in Franklin County and $83,390 in Illinois. In 2015-2019 it was $40,126 in 2024 dollars; the margins of error cannot tell the two periods apart. 18.0% of residents live below the poverty line.
| Measure | Thompsonville | Franklin County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $46,058 ±$9,872 | $56,740 | no clear change |
| Mean household income | $64,247 ±$16,036 | $72,759 | – |
| Per capita income | $31,270 ±$7,799 | $31,012 | +$10,950 |
| People below the poverty line | 18.0% ±9.8 pts | 17.5% | −14.7 pts |
| Children under 18 below the poverty line | 23.6% ±22.9 pts | 23.8% | – |
| Households receiving SNAP | 19.6% ±8.3 pts | 25.8% | – |
| Households with a computer | 85.1% ±12.9 pts | 92.3% | – |
| Households with a broadband subscription | 70.6% ±15.6 pts | 83.4% | – |
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 Thompsonville?
Owners occupy 51.1% of Thompsonville's occupied homes and renters 48.9%. The median owner-occupied home is valued at $84,500 by its owner (±$10,638). The median renter pays $674 a month including utilities.
| Measure | Thompsonville | Franklin County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $84,500 ±$10,638 | $89,000 | no clear change |
| Median gross rent | $674 ±$59 | $803 | no clear change |
| Renters paying 35% or more of income on rent | 13.7% ±15.4 pts | 39.3% | – |
| Median monthly owner costs, with a mortgage | $950 ±$229 | $1,171 | – |
| Owner-occupied homes | 51.1% ±13.0 pts | 74.1% | no clear change |
| Renter-occupied homes | 48.9% ±13.0 pts | 25.9% | – |
| Housing units | 283 ±70 | 18,462 | no clear change |
| Homeowner vacancy rate | 0.8% ±3.5 pts | 3.0% | – |
| Rental vacancy rate | 8.3% ±6.3 pts | 1.9% | – |
| Single-family detached homes | 60.4% ±11.1 pts | 79.1% | – |
| Mobile homes | 27.9% ±12.4 pts | 10.3% | – |
| Built 2020 or later | 0.0% ±12.4 pts | 0.7% | – |
| Built 2010 to 2019 | 3.9% ±5.0 pts | 5.0% | – |
| Built 1939 or earlier | 17.0% ±8.0 pts | 22.9% | – |
| Households with no vehicle | 11.5% ±7.5 pts | 6.3% | – |
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 Thompsonville work and get to work?
79.4% of Thompsonville's workers drive alone. The average trip to work takes 29.8 minutes.
| Measure | Thompsonville | Franklin County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 65.4% ±9.9 pts | 56.0% | – |
| Unemployment rate | 8.4% ±7.0 pts | 7.7% | – |
| Drove alone to work | 79.4% ±9.6 pts | 79.4% | – |
| Carpooled | 15.2% ±9.2 pts | 10.3% | – |
| Public transportation | 0.0% ±15.4 pts | 0.3% | – |
| Walked | 0.0% ±15.4 pts | 1.4% | – |
| Worked from home | 3.6% ±4.7 pts | 7.2% | – |
| Mean travel time to work | 29.8 min ±7.1 | 26.9 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 Thompsonville?
No census tract lies mostly in Thompsonville; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 412Franklin County | 3,706 | $65,856 |
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 Thompsonville) · Census block assignment files
How does Thompsonville compare with other places in Illinois?
By the Census Bureau's July 2025 estimates, Thompsonville is the 13,375th-most populous of the 19,476 U.S. incorporated places that have one and the 875th-most populous of 1,294 in Illinois.
Thompsonville 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 | 875th | 1,294 |
Thompsonville's figures with every place in Illinois (CSV)
Every place in Illinois, sortable · Compare Thompsonville 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 Thompsonville?
22 of the 57 figures for Thompsonville 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 Thompsonville 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 Thompsonville.