Population 54,770 · Census ACS 2020–24
Choose a measure to map it.Tap a measure to map it. Swipe the row for more. Arrows show the change since 2006–10.
Median age by neighborhoodHistory and comparison ↓︎
Younger residents
Older residents
Colorblind friendly
off
More maps of Seneca County: Best Neighborhoods · Walk Grade · Household income · Home prices · Race · Politics · Traffic noise · Internet
Population and households in Seneca County
Household size in Seneca County
| Period | Seneca County | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 2.50 | 2.51 | 2.68 |
| 2010–14 | 2.48 | 2.51 | 2.73 |
| 2015–19 | 2.43 | 2.47 | 2.71 |
| 2020–24 | 2.38 | 2.46 | 2.65 |
| Change | −0.12 | −0.05 | −0.03 |
Households in Seneca County are small: just 2.38 people on average, compared with 2.65 nationally. That is typical of places where many people live alone or as couples, and fewer have children at home. Household size has dropped from 2.50 in 2006–10, a much bigger shift than nationally.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Seneca County
| Period | Seneca County | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 39.9 | 39.0 | 37.7 |
| 2010–14 | 40.6 | 40.0 | 38.6 |
| 2015–19 | 41.2 | 40.7 | 39.6 |
| 2020–24 | 41.5 | 40.8 | 40.1 |
| Change | +1.6 | +1.8 | +2.3 |
At 41.5, the median age in Seneca County is close to the national median of 40.1, so its age mix looks much like the country's. Since 2006–10, the median age has climbed from 39.9, in line with the national trend. Residents skew youngest in the center and oldest in the southeast.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Seneca County
| Period | Seneca County | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 11.0% | 11.7% | 12.3% |
| 2010–14 | 12.7% | 11.9% | 12.3% |
| 2015–19 | 13.1% | 11.7% | 11.6% |
| 2020–24 | 12.0% | 11.7% | 11.6% |
| Change | +1.0 pts | −0.0 pts | −0.6 pts |
Single parents head about one in eight households in Seneca County (12.0%), close to the national share of 11.6%. The single-parent share is up 1.0 points from 2006–10, even as the national share fell.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Seneca County
Renters in Seneca County
| Period | Seneca County | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 24.9% | 30.8% | 33.3% |
| 2010–14 | 28.2% | 33.1% | 35.6% |
| 2015–19 | 27.7% | 33.9% | 36.0% |
| 2020–24 | 26.6% | 32.8% | 34.8% |
| Change | +1.7 pts | +2.0 pts | +1.5 pts |
Just over a quarter of households in Seneca County rent their homes (26.6%), below the national share of 34.8%; the rest own. Among homeowners, 47.9% have no mortgage at all, above the national share of 39.8%. Renting is most common in the center and least common in the northeast. The renter share is up 1.7 points from 2006–10, as it has nationally.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Seneca County
| Period | Seneca County | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 9.8% | 10.8% | 11.4% |
| 2010–14 | 10.9% | 10.8% | 11.4% |
| 2015–19 | 11.4% | 10.2% | 11.1% |
| 2020–24 | 8.5% | 8.7% | 9.6% |
| Change | −1.3 pts | −2.2 pts | −1.8 pts |
About as many homes sit empty in Seneca County as nationally: 8.5%, against 9.6%. Vacancy has edged down 1.3 points since 2006–10, in line with the national trend.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Seneca County
| Period | Seneca County | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 1954 | 1968 | 1974 |
| 2010–14 | 1958 | 1969 | 1975 |
| 2015–19 | 1958 | 1970 | 1977 |
| 2020–24 | 1960 | 1972 | 1980 |
| Change | +6 | +4 | +6 |
Seneca County is a place of older homes: half were built before 1960, while the national median is 1980. That means established neighborhoods, and more houses that may need updating. The newest homes are mostly in the northeast, the oldest in the northwest. Few Ohio counties have older homes: only three of 88.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Seneca County
| Period | Seneca County | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | $597 | $765 | $965 |
| 2010–14 | $680 | $814 | $1,040 |
| 2015–19 | $691 | $901 | $1,213 |
| 2020–24 | $848 | $1,142 | $1,571 |
| Change | +$251 | +$377 | +$606 |
The median renter in Seneca County pays $848 a month for rent and utilities, well below the national median of $1,571. Rents are up $251 a month from 2006–10, a 42% rise, a slower climb than the nation's. Rent takes 26.0% of the typical renter's income, comfortably under the 30% mark often used to define affordable rent. Rents run highest in the center and lowest in the west.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Seneca County
Bachelor's degrees in Seneca County
| Period | Seneca County | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 16.8% | 25.4% | 28.4% |
| 2010–14 | 14.8% | 26.5% | 29.6% |
| 2015–19 | 16.9% | 28.9% | 32.1% |
| 2020–24 | 20.5% | 31.9% | 35.6% |
| Change | +3.7 pts | +6.5 pts | +7.2 pts |
College degrees are relatively uncommon in Seneca County: 20.5% of adults 25 and older hold a bachelor's or higher, well below the national share of 35.6%. The share with a degree has risen 3.7 points since 2006–10, as it has nationally. College graduates are most concentrated in the south and least in the northwest.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Seneca County
| Period | Seneca County | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 87.6% | 87.7% | 84.9% |
| 2010–14 | 89.7% | 88.9% | 86.1% |
| 2015–19 | 91.7% | 90.4% | 87.7% |
| 2020–24 | 93.4% | 91.7% | 89.3% |
| Change | +5.8 pts | +4.0 pts | +4.3 pts |
High school completion in Seneca County is above the national rate: 93.4% of adults have a diploma or equivalent, against 89.3%. The share with a diploma is up 5.8 points from 2006–10, mirroring the country.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Seneca County
| Period | Seneca County | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 9.0% | 8.7% | 8.1% |
| 2010–14 | 9.8% | 9.4% | 9.4% |
| 2015–19 | 4.5% | 5.5% | 5.6% |
| 2020–24 | 3.4% | 4.9% | 5.4% |
| Change | −5.6 pts | −3.8 pts | −2.7 pts |
Jobs have been easier to find in Seneca County than nationally: unemployment was 3.4%, against 5.4%. Unemployment has fallen 5.6 points since 2006–10, in line with the national trend. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Seneca County compared with nearby counties
| County | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Seneca County | 2.38 | 41.5 | 12.0% | 26.6% | 8.5% | 1960 | $848 | 20.5% | 93.4% | 3.4% |
| Hancock County | 2.37 | 41.6 | 10.0% | 29.2% | 8.4% | 1970 | $1,007 | 30.2% | 95.6% | 3.1% |
| Huron County | 2.48 | 40.7 | 12.4% | 26.0% | 9.8% | 1967 | $884 | 16.7% | 90.7% | 4.5% |
| Putnam County | 2.59 | 41.7 | 5.0% | 12.9% | 5.9% | 1969 | $841 | 26.4% | 95.3% | 1.7% |
| Defiance County | 2.55 | 41.3 | 11.3% | 20.7% | 7.5% | 1967 | $899 | 19.5% | 92.7% | 5.3% |
| Medina County | 2.55 | 43.8 | 7.5% | 19.7% | 5.1% | 1985 | $1,338 | 37.2% | 94.5% | 3.0% |
| Paulding County | 2.49 | 41.8 | 10.7% | 19.9% | 10.5% | 1971 | $812 | 17.0% | 90.5% | 3.3% |
| Summit County | 2.37 | 42.6 | 11.8% | 32.5% | 7.7% | 1968 | $1,210 | 36.0% | 92.7% | 5.3% |
| Allen County | 2.59 | 37.1 | 12.3% | 31.1% | 6.7% | 1978 | $1,176 | 32.3% | 89.6% | 4.7% |
| Portage County | 2.38 | 41.1 | 8.5% | 29.9% | 9.3% | 1978 | $1,090 | 35.2% | 93.2% | 5.0% |
| Whitley County | 2.48 | 41.1 | 9.4% | 18.2% | 7.3% | 1976 | $905 | 23.1% | 92.5% | 3.3% |
All figures 2020–24.
Counties with similar populations: Kenai Peninsula Borough, AK · Humacao Municipio, PR · Huron County, OH · Iron County, UT · Isabella County, MI · Jackson County, AL · Jackson County, IL · Jefferson County, TN · Jefferson County, WV · Jessamine County, KY
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Seneca County. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
No other site shows detail at this level for free. We are able to keep this site free by receiving a small commission from the referring links on this page. Please share or cite this page if you aren’t able to otherwise support our work.