Township · Ohio
Seneca Township, Seneca County, Ohio
Seneca Township, Seneca County, township, in Seneca County, Ohio. Seneca Township, Seneca County had 1,427 residents on July 1, 2025 by the Census Bureau's estimate, down 2.3% since 2020; the 2020 Census counted 1,444 and the ACS 2020-2024 5-year estimates put it at 1,278 (±239). GEOID 3914771355.
Residents, July 2025 estimate
1,427
Census Bureau estimate (no margin published)
2020 Census count: 1,444 · ACS 2020-2024: 1,278 ±239
Median household income
$91,892
±$12,885 (90% margin)
Ohio: $71,389
Median home value
$198,500
±$34,806 (90% margin)
Ohio: $214,800
Median gross rent
$863
±$167 (90% margin)
Ohio: $1,034
Where is Seneca Township, Seneca County and what county is it in?
Seneca Township, Seneca County is a township in Seneca County, Ohio. It covers 35.6 square miles of land, 41 residents per square mile in 2020.
Part of McCutchenville (CDP) also lies in it.
Seneca Township, Seneca County is in the Tiffin, OH micropolitan statistical area (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Seneca Township, Seneca County, and is it growing?
The Census Bureau estimates that 1,427 people lived in Seneca Township, Seneca County on July 1, 2025, down 2.3% since 2020, while Ohio grew 0.9%. The 2020 Census counted 1,444 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 1,278 (±239).
| Measure | Seneca Township, Seneca County | Seneca County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 1,278±239 | 54,770 | no clear change |
| Households | 550±98 | 22,279 | no clear change |
| Average household size | 2.30±0.23 | 2.34 | −0.38 |
| Housing units | 621±133 | 23,982 | no clear change |
Seneca Township, Seneca County's population since 2000
From 1,585 in 2000 to 1,427 in 2025: down 10.0%. The 2000, 2010 and 2020 figures are census counts, each for Seneca Township, Seneca County 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 Seneca Township, Seneca County?
The median resident of Seneca Township, Seneca County is 48.3 years old; 18.2% are under 18 and 18.3% are 65 or older. The largest group is non-Hispanic white residents at 94.0%, then Hispanic or Latino residents (of any race) at 4.0%.
| Measure | Seneca Township, Seneca County | Seneca County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 48.3±6.1 | 40.2 | no clear change |
| Under 18 years | 18.2%±5.5 pts | 21.4% | – |
| 65 years and over | 18.3%±6.0 pts | 19.2% | – |
| Male | 51.1%±4.7 pts | 50.2% | – |
| Hispanic or Latino (any race) | 4.0%±3.1 pts | 5.7% | – |
| White alone, not Hispanic | 94.0%±3.5 pts | 87.8% | −5.1 pts |
| Black or African American alone, not Hispanic | 0.0%±2.9 pts | 2.4% | – |
| Asian alone, not Hispanic | 0.0%±2.9 pts | 0.5% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±2.9 pts | 0.2% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±2.9 pts | 0.0% | – |
| Two or more races, not Hispanic | 1.3%±1.5 pts | 3.0% | – |
| Some other race alone, not Hispanic | 0.8%±1.1 pts | 0.4% | – |
| Born outside the United States | 1.6%±1.5 pts | 1.2% | – |
| Speak a language other than English at home (age 5+) | 2.4%±1.7 pts | 2.6% | – |
| Civilian veterans (age 18+) | 4.6%±2.8 pts | 6.8% | – |
| With a disability | 14.2%±7.5 pts | 15.2% | – |
| No health insurance coverage | 3.5%±2.7 pts | 5.3% | – |
| High school graduate or higher (age 25+) | 94.7%±4.2 pts | 93.3% | – |
| Bachelor's degree or higher (age 25+) | 15.1%±7.2 pts | 20.6% | no clear change |
| Graduate or professional degree (age 25+) | 5.0%±3.7 pts | 7.6% | – |
| Lived in the same house a year earlier | 88.6%±7.3 pts | 89.0% | – |
| Moved from another state in the past year | 0.0%±2.9 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 Seneca Township, Seneca County earn?
Half of Seneca Township, Seneca County's 550 households earn less than $91,892 a year (±$12,885), against $66,025 in Seneca County and $71,389 in Ohio. In 2015-2019 it was $91,994 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Seneca Township, Seneca County | Seneca County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $91,892±$12,885 | $66,025 | no clear change |
| Mean household income | $95,860±$10,686 | $82,475 | – |
| Per capita income | $41,270±$4,108 | $33,984 | no clear change |
| People below the poverty line | 3.1%±2.2 pts | 11.9% | – |
| Children under 18 below the poverty line | 0.0%±14.8 pts | 14.7% | – |
| Households receiving SNAP | 4.0%±4.3 pts | 13.5% | – |
| Households with a computer | 96.5%±3.3 pts | 93.0% | – |
| Households with a broadband subscription | 93.3%±4.2 pts | 88.1% | – |
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 Seneca Township, Seneca County?
Owners occupy 93.6% of Seneca Township, Seneca County's occupied homes and renters 6.4%. The median owner-occupied home is valued at $198,500 by its owner (±$34,806). The median renter pays $863 a month including utilities.
| Measure | Seneca Township, Seneca County | Seneca County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $198,500±$34,806 | $154,700 | no clear change |
| Median gross rent | $863±$167 | $856 | – |
| Renters paying 35% or more of income on rent | 0.0%±53.8 pts | 33.7% | – |
| Median monthly owner costs, with a mortgage | $1,276±$182 | $1,206 | – |
| Owner-occupied homes | 93.6%±5.3 pts | 73.4% | no clear change |
| Renter-occupied homes | 6.4%±5.3 pts | 26.6% | – |
| Housing units | 621±133 | 23,982 | no clear change |
| Homeowner vacancy rate | 0.0%±7.0 pts | 1.0% | – |
| Rental vacancy rate | 0.0%±53.8 pts | 5.8% | – |
| Single-family detached homes | 97.3%±3.2 pts | 78.7% | – |
| Mobile homes | 2.7%±3.2 pts | 4.2% | – |
| Built 2020 or later | 0.0%±5.9 pts | 0.4% | – |
| Built 2010 to 2019 | 2.3%±2.5 pts | 2.6% | – |
| Built 1939 or earlier | 36.4%±11.4 pts | 35.2% | – |
| Households with no vehicle | 0.7%±1.1 pts | 6.1% | – |
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 Seneca Township, Seneca County work and get to work?
80.8% of Seneca Township, Seneca County's workers drive alone. The average trip to work takes 26.1 minutes.
| Measure | Seneca Township, Seneca County | Seneca County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 70.1%±6.3 pts | 61.5% | – |
| Unemployment rate | 1.7%±2.6 pts | 3.6% | – |
| Drove alone to work | 80.8%±8.0 pts | 81.6% | – |
| Carpooled | 11.5%±6.4 pts | 7.4% | – |
| Public transportation | 0.7%±1.0 pts | 0.2% | – |
| Walked | 2.6%±3.2 pts | 4.0% | – |
| Worked from home | 3.5%±3.4 pts | 5.9% | – |
| Mean travel time to work | 26.1 min±5.7 | 20.7 min | +7.6 min |
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 Seneca Township, Seneca County?
No census tract lies mostly in Seneca Township, Seneca County; 3 tracts reach into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9631Seneca County | 4,200 | $82,754 |
| Tract 9632Seneca County | 3,821 | $41,391 |
| Tract 9637Seneca County | 4,779 | $77,648 |
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 Seneca Township, Seneca County) · Census block assignment files
How does Seneca Township, Seneca County compare with other places in Ohio?
By the Census Bureau's July 2025 estimates, Seneca Township, Seneca County is the 6,173rd-most populous of the 16,079 U.S. towns and townships that have one and the 874th-most populous of 1,311 in Ohio.
Seneca Township, Seneca County ranks 404th of 1,699 places in Ohio with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 874th | 1,311 |
| Growth 2020-2025 (PEP) | 1,368th | 1,589 |
| Residents per square mile | 1,631st | 1,734 |
| Median household income | 404th | 1,699 |
| Per capita income | 547th | 1,729 |
| Median home value | 845th | 1,707 |
| Median gross rent | 882nd | 1,453 |
| Bachelor's degree or higher | 1,257th | 1,613 |
| Median age | 308th | 1,727 |
| Owner-occupied share | 173rd | 1,732 |
| Travel time to work | 650th | 1,731 |
Seneca Township, Seneca County's figures with every place in Ohio (CSV)
Every place in Ohio, sortable · Compare Seneca Township, Seneca County 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 Seneca Township, Seneca County?
27 of the 57 figures for Seneca Township, Seneca County 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 Seneca Township, Seneca County 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' school search.