City · Missouri
Cainsville, Missouri
Cainsville, city, in Harrison County, Missouri. Cainsville had 285 residents on July 1, 2025 by the Census Bureau's estimate, up 1.1% since 2020; the 2020 Census counted 283 and the ACS 2020-2024 5-year estimates put it at 212 (±51). GEOID 2910342.
Residents, July 2025 estimate
285
Census Bureau estimate (no margin published)
2020 Census count: 283 · ACS 2020-2024: 212 ±51
Median household income
$41,667
±$10,845 (90% margin)
Missouri: $70,702
Median home value
$62,000
±$17,376 (90% margin)
Missouri: $230,300
Median gross rent
$538
±$208 (90% margin)
Missouri: $1,033
Where is Cainsville and what county is it in?
Cainsville is a city in Harrison County, Missouri. It covers 1.4 square miles of land, 206 residents per square mile in 2020.
Cainsville lies entirely within Madison Township (Harrison 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 Cainsville, and is it growing?
The Census Bureau estimates that 285 people lived in Cainsville on July 1, 2025, up 1.1% since 2020, slower than Missouri (+1.9%). The 2020 Census counted 283 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 212 (±51).
| Measure | Cainsville | Harrison County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 212 ±51 | 8,190 | no clear change |
| Households | 98 ±23 | 3,195 | no clear change |
| Average household size | 2.16 ±0.38 | 2.51 | no clear change |
| Housing units | 153 ±33 | 4,008 | no clear change |
Cainsville's population since 2000
From 370 in 2000 to 285 in 2025: down 23.0%. The 2000, 2010 and 2020 figures are census counts, each for Cainsville 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 Cainsville?
The median resident of Cainsville is 49.6 years old; 16.5% are under 18 and 22.2% are 65 or older. The largest group is non-Hispanic white residents at 91.0%, then non-Hispanic residents of two or more races at 6.1%.
| Measure | Cainsville | Harrison County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 49.6 ±5.8 | 41.8 | no clear change |
| Under 18 years | 16.5% ±6.2 pts | 24.3% | – |
| 65 years and over | 22.2% ±7.8 pts | 22.8% | – |
| Male | 48.1% ±6.8 pts | 49.6% | – |
| Hispanic or Latino (any race) | 2.8% ±3.4 pts | 0.8% | – |
| White alone, not Hispanic | 91.0% ±7.5 pts | 93.8% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±15.2 pts | 0.8% | – |
| Asian alone, not Hispanic | 0.0% ±15.2 pts | 1.2% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±15.2 pts | 0.2% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±15.2 pts | 0.0% | – |
| Two or more races, not Hispanic | 6.1% ±6.7 pts | 3.0% | – |
| Some other race alone, not Hispanic | 0.0% ±15.2 pts | 0.2% | – |
| Born outside the United States | 1.4% ±1.8 pts | 2.1% | – |
| Speak a language other than English at home (age 5+) | 0.0% ±15.3 pts | 3.7% | – |
| Civilian veterans (age 18+) | 9.6% ±5.5 pts | 5.4% | – |
| With a disability | 17.0% ±6.3 pts | 20.4% | – |
| No health insurance coverage | 7.5% ±6.3 pts | 13.6% | – |
| High school graduate or higher (age 25+) | 93.3% ±5.2 pts | 90.5% | – |
| Bachelor's degree or higher (age 25+) | 11.6% ±5.4 pts | 15.7% | – |
| Graduate or professional degree (age 25+) | 2.4% ±2.6 pts | 6.0% | – |
| Lived in the same house a year earlier | 95.3% ±4.5 pts | 88.8% | – |
| Moved from another state in the past year | 0.0% ±15.2 pts | 3.1% | – |
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 Cainsville earn?
Half of Cainsville's 98 households earn less than $41,667 a year (±$10,845), against $54,367 in Harrison County and $70,702 in Missouri. In 2015-2019 it was $50,766 in 2024 dollars; the margins of error cannot tell the two periods apart. 15.1% of residents live below the poverty line.
| Measure | Cainsville | Harrison County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $41,667 ±$10,845 | $54,367 | no clear change |
| Mean household income | $66,516 ±$17,200 | $66,587 | – |
| Per capita income | $31,938 ±$7,977 | $27,238 | no clear change |
| People below the poverty line | 15.1% ±7.9 pts | 19.6% | no clear change |
| Children under 18 below the poverty line | 11.4% ±15.0 pts | 27.7% | – |
| Households receiving SNAP | 9.2% ±6.7 pts | 13.7% | – |
| Households with a computer | 82.7% ±10.5 pts | 88.9% | – |
| Households with a broadband subscription | 74.5% ±10.7 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 Cainsville?
Owners occupy 85.7% of Cainsville's occupied homes and renters 14.3%. The median owner-occupied home is valued at $62,000 by its owner (±$17,376). The median renter pays $538 a month including utilities, and 58.3% of renters pay 35% or more of their income on rent.
| Measure | Cainsville | Harrison County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $62,000 ±$17,376 | $109,500 | no clear change |
| Median gross rent | $538 ±$208 | $703 | – |
| Renters paying 35% or more of income on rent | 58.3% ±37.3 pts | 39.9% | – |
| Median monthly owner costs, with a mortgage | $1,125 ±$94 | $1,226 | – |
| Owner-occupied homes | 85.7% ±10.3 pts | 71.4% | no clear change |
| Renter-occupied homes | 14.3% ±10.3 pts | 28.6% | – |
| Housing units | 153 ±33 | 4,008 | no clear change |
| Homeowner vacancy rate | 5.1% ±7.9 pts | 0.5% | – |
| Rental vacancy rate | 50.0% ±31.2 pts | 5.1% | – |
| Single-family detached homes | 73.9% ±11.4 pts | 80.6% | – |
| Mobile homes | 11.8% ±8.7 pts | 7.8% | – |
| Built 2020 or later | 0.0% ±20.3 pts | 0.7% | – |
| Built 2010 to 2019 | 3.3% ±3.3 pts | 5.7% | – |
| Built 1939 or earlier | 43.8% ±11.9 pts | 23.0% | – |
| Households with no vehicle | 8.2% ±7.0 pts | 6.5% | – |
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 do people in Cainsville work and get to work?
77.2% of Cainsville's workers drive alone. The average trip to work takes 34.3 minutes.
| Measure | Cainsville | Harrison County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 56.8% ±9.5 pts | 54.9% | – |
| Unemployment rate | 2.9% ±3.5 pts | 2.5% | – |
| Drove alone to work | 77.2% ±9.5 pts | 79.2% | – |
| Carpooled | 6.9% ±6.0 pts | 6.6% | – |
| Public transportation | 0.0% ±28.5 pts | 0.2% | – |
| Walked | 11.9% ±8.7 pts | 2.6% | – |
| Worked from home | 0.0% ±28.5 pts | 9.7% | – |
| Mean travel time to work | 34.3 min ±10.0 | 22.9 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 Cainsville?
No census tract lies mostly in Cainsville; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9501Harrison County | 3,315 | $58,750 |
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 Cainsville) · Census block assignment files
How does Cainsville compare with other places in Missouri?
By the Census Bureau's July 2025 estimates, Cainsville is the 15,299th-most populous of the 19,476 U.S. incorporated places that have one and the 582nd-most populous of 936 in Missouri.
Cainsville 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 | 582nd | 936 |
Cainsville's figures with every place in Missouri (CSV)
Every place in Missouri, sortable · Compare Cainsville 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 Cainsville?
25 of the 57 figures for Cainsville 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 Cainsville 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 Cainsville.