Village · New York
South Dayton, New York
South Dayton, village, in Cattaraugus County, New York. South Dayton had 545 residents on July 1, 2025 by the Census Bureau's estimate, down 3.5% since 2020; the 2020 Census counted 541 and the ACS 2020-2024 5-year estimates put it at 543 (±146). GEOID 3668891.
Residents, July 2025 estimate
545
Census Bureau estimate (no margin published)
2020 Census count: 541 · ACS 2020-2024: 543 ±146
Median household income
$40,000
±$17,614 (90% margin)
New York: $85,974
Median home value
$67,300
±$8,823 (90% margin)
New York: $423,800
Median gross rent
$794
±$205 (90% margin)
New York: $1,621
Where is South Dayton and what county is it in?
South Dayton is a village in Cattaraugus County, New York. It covers 1.0 square miles of land, 538 residents per square mile in 2020.
South Dayton is in the Olean, NY micropolitan statistical area (Census Bureau delineation, July 2023).
South Dayton lies entirely within the Town of Dayton, a town 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 South Dayton, and is it growing?
The Census Bureau estimates that 545 people lived in South Dayton on July 1, 2025, down 3.5% since 2020, a steeper fall than New York's (−1.0%). The 2020 Census counted 541 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 543 (±146).
| Measure | South Dayton | Cattaraugus County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 543 ±146 | 76,145 | no clear change |
| Households | 230 ±50 | 31,895 | no clear change |
| Average household size | 2.36 ±0.39 | 2.29 | no clear change |
| Housing units | 256 ±56 | 40,356 | no clear change |
South Dayton's population since 2000
From 662 in 2000 to 545 in 2025: down 17.7%. The 2000, 2010 and 2020 figures are census counts, each for South Dayton 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 South Dayton?
The median resident of South Dayton is 42.8 years old; 25.8% are under 18 and 14.4% are 65 or older. The largest group is non-Hispanic white residents at 97.1%, then non-Hispanic residents of two or more races at 1.5%.
| Measure | South Dayton | Cattaraugus County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 42.8 ±10.8 | 42.8 | no clear change |
| Under 18 years | 25.8% ±7.5 pts | 21.9% | – |
| 65 years and over | 14.4% ±6.0 pts | 20.8% | – |
| Male | 50.6% ±6.1 pts | 50.2% | – |
| Hispanic or Latino (any race) | 0.9% ±1.3 pts | 2.4% | – |
| White alone, not Hispanic | 97.1% ±2.9 pts | 87.7% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±7.5 pts | 1.4% | – |
| Asian alone, not Hispanic | 0.0% ±7.5 pts | 0.9% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.6% ±0.7 pts | 2.3% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±7.5 pts | 0.0% | – |
| Two or more races, not Hispanic | 1.5% ±1.8 pts | 4.9% | – |
| Some other race alone, not Hispanic | 0.0% ±7.5 pts | 0.4% | – |
| Born outside the United States | 0.0% ±7.5 pts | 1.7% | – |
| Speak a language other than English at home (age 5+) | 0.2% ±0.5 pts | 6.0% | – |
| Civilian veterans (age 18+) | 11.7% ±5.5 pts | 7.9% | – |
| With a disability | 18.4% ±7.9 pts | 16.9% | – |
| No health insurance coverage | 4.4% ±3.6 pts | 6.1% | – |
| High school graduate or higher (age 25+) | 81.7% ±10.2 pts | 89.5% | – |
| Bachelor's degree or higher (age 25+) | 10.4% ±4.8 pts | 21.1% | −8.7 pts |
| Graduate or professional degree (age 25+) | 3.3% ±2.7 pts | 9.8% | – |
| Lived in the same house a year earlier | 90.1% ±5.8 pts | 91.8% | – |
| Moved from another state in the past year | 0.4% ±0.6 pts | 1.0% | – |
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 South Dayton earn?
Half of South Dayton's 230 households earn less than $40,000 a year (±$17,614), against $59,540 in Cattaraugus County and $85,974 in New York. In 2015-2019 it was $54,356 in 2024 dollars; the margins of error cannot tell the two periods apart. 35.6% of residents live below the poverty line.
| Measure | South Dayton | Cattaraugus County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $40,000 ±$17,614 | $59,540 | no clear change |
| Mean household income | $53,107 ±$8,737 | $75,425 | – |
| Per capita income | $22,414 ±$5,271 | $31,747 | no clear change |
| People below the poverty line | 35.6% ±15.1 pts | 19.1% | +17.3 pts |
| Children under 18 below the poverty line | 53.8% ±23.1 pts | 27.3% | +30.4 pts |
| Households receiving SNAP | 31.3% ±8.9 pts | 18.0% | – |
| Households with a computer | 87.4% ±6.7 pts | 89.4% | – |
| Households with a broadband subscription | 84.8% ±7.9 pts | 83.9% | – |
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 South Dayton?
Owners occupy 73.5% of South Dayton's occupied homes and renters 26.5%. The median owner-occupied home is valued at $67,300 by its owner (±$8,823). The median renter pays $794 a month including utilities.
| Measure | South Dayton | Cattaraugus County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $67,300 ±$8,823 | $113,100 | no clear change |
| Median gross rent | $794 ±$205 | $770 | no clear change |
| Renters paying 35% or more of income on rent | 28.0% ±18.7 pts | 35.2% | – |
| Median monthly owner costs, with a mortgage | $1,274 ±$133 | $1,263 | – |
| Owner-occupied homes | 73.5% ±9.6 pts | 75.2% | no clear change |
| Renter-occupied homes | 26.5% ±9.6 pts | 24.8% | – |
| Housing units | 256 ±56 | 40,356 | no clear change |
| Homeowner vacancy rate | 1.2% ±1.5 pts | 0.7% | – |
| Rental vacancy rate | 0.0% ±43.4 pts | 8.3% | – |
| Single-family detached homes | 75.8% ±8.9 pts | 70.1% | – |
| Mobile homes | 11.3% ±6.6 pts | 11.0% | – |
| Built 2020 or later | 0.0% ±15.2 pts | 0.4% | – |
| Built 2010 to 2019 | 3.5% ±4.1 pts | 3.7% | – |
| Built 1939 or earlier | 52.3% ±10.1 pts | 35.6% | – |
| Households with no vehicle | 9.6% ±7.0 pts | 10.7% | – |
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 South Dayton building?
Builders took permits for 1 new housing units in South Dayton in 2025 (1 in single-family houses), 1.8 per 1,000 residents against 1.9 across New York.
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 South Dayton work and get to work?
75.3% of South Dayton's workers drive alone. The average trip to work takes 30.0 minutes.
| Measure | South Dayton | Cattaraugus County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 49.3% ±9.0 pts | 55.3% | – |
| Unemployment rate | 4.9% ±4.7 pts | 5.0% | – |
| Drove alone to work | 75.3% ±9.4 pts | 75.8% | – |
| Carpooled | 9.9% ±5.3 pts | 9.4% | – |
| Public transportation | 0.0% ±20.6 pts | 0.4% | – |
| Walked | 7.1% ±6.5 pts | 4.8% | – |
| Worked from home | 7.7% ±6.2 pts | 8.0% | – |
| Mean travel time to work | 30.0 min ±5.6 | 22.6 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 South Dayton?
No census tract lies mostly in South Dayton; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9605Cattaraugus County | 5,335 | $58,902 |
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 South Dayton) · Census block assignment files
How does South Dayton compare with other places in New York?
By the Census Bureau's July 2025 estimates, South Dayton is the 12,840th-most populous of the 19,476 U.S. incorporated places that have one and the 512th-most populous of 594 in New York.
South Dayton 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 | 512th | 594 |
South Dayton's figures with every place in New York (CSV)
Every place in New York, sortable · Compare South Dayton 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 South Dayton?
22 of the 57 figures for South Dayton 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 South Dayton 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 South Dayton.