Population 32,920 · Census ACS 2020–24
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Population and households in Seneca County
Household size in Seneca County
| Period | Seneca County | New York | U.S. |
|---|---|---|---|
| 2006–10 | 2.47 | 2.68 | 2.68 |
| 2010–14 | 2.39 | 2.72 | 2.73 |
| 2015–19 | 2.33 | 2.69 | 2.71 |
| 2020–24 | 2.33 | 2.65 | 2.65 |
| Change | −0.14 | −0.03 | −0.03 |
Households in Seneca County are small: just 2.33 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. Since 2006–10, household size has dropped from 2.47, 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 | New York | U.S. |
|---|---|---|---|
| 2006–10 | 41.1 | 38.3 | 37.7 |
| 2010–14 | 42.2 | 39.0 | 38.6 |
| 2015–19 | 43.5 | 40.2 | 39.6 |
| 2020–24 | 44.0 | 40.8 | 40.1 |
| Change | +3.0 | +2.5 | +2.3 |
Seneca County skews older than the country: its median age is 44.0, against 40.1 nationally. The median age has climbed from 41.1 in 2006–10, in line with the national trend.
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 | New York | U.S. |
|---|---|---|---|
| 2006–10 | 12.6% | 13.1% | 12.3% |
| 2010–14 | 11.0% | 12.7% | 12.3% |
| 2015–19 | 9.6% | 11.6% | 11.6% |
| 2020–24 | 8.5% | 11.6% | 11.6% |
| Change | −4.0 pts | −1.5 pts | −0.6 pts |
Single-parent households are relatively rare in Seneca County: 8.5% of households, against 11.6% nationally. Since 2006–10, the single-parent share has fallen 4.0 points, a much bigger shift than nationally. Seneca County has a lower share of single-parent households than the great majority of New York counties.
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 | New York | U.S. |
|---|---|---|---|
| 2006–10 | 22.6% | 44.8% | 33.3% |
| 2010–14 | 26.9% | 46.2% | 35.6% |
| 2015–19 | 26.1% | 46.2% | 36.0% |
| 2020–24 | 29.0% | 45.7% | 34.8% |
| Change | +6.5 pts | +0.9 pts | +1.5 pts |
Most households in Seneca County own their homes; 29.0% rent, a little below the national share of 34.8%. Among homeowners, 47.3% have no mortgage at all, above the national share of 39.8%. Rentals cluster in the north; owners are most common in the southeast. The renter share is up 6.5 points from 2006–10, a much bigger shift than 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 | New York | U.S. |
|---|---|---|---|
| 2006–10 | 16.7% | 10.3% | 11.4% |
| 2010–14 | 15.3% | 10.4% | 11.4% |
| 2015–19 | 15.8% | 11.0% | 11.1% |
| 2020–24 | 16.0% | 9.7% | 9.6% |
| Change | −0.6 pts | −0.6 pts | −1.8 pts |
Vacancy is high in Seneca County: 16.0% of homes are empty, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand. Vacancy has edged down 0.6 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 | New York | U.S. |
|---|---|---|---|
| 2006–10 | 1957 | 1956 | 1974 |
| 2010–14 | 1959 | 1957 | 1975 |
| 2015–19 | 1959 | 1958 | 1977 |
| 2020–24 | 1960 | 1961 | 1980 |
| Change | +3 | +5 | +6 |
The housing in Seneca County is old by national standards: the median home dates to 1960, against 1980 for the U.S., so buyers will find more older houses, some of them due for updates. New York as a whole looks much the same.
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 | New York | U.S. |
|---|---|---|---|
| 2006–10 | $728 | $1,095 | $965 |
| 2010–14 | $738 | $1,201 | $1,040 |
| 2015–19 | $783 | $1,426 | $1,213 |
| 2020–24 | $1,016 | $1,794 | $1,571 |
| Change | +$288 | +$698 | +$606 |
Rent in Seneca County runs $1,016 a month at the median, utilities included, well below the U.S. median of $1,571. Rents are up $288 a month from 2006–10, a 40% rise, a slower climb than the nation's. Rent takes 30.8% of the typical renter's income, just over the 30% mark often used to define affordable rent. The priciest rents are in the east; the most affordable are 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 | New York | U.S. |
|---|---|---|---|
| 2006–10 | 18.3% | 31.9% | 28.4% |
| 2010–14 | 19.9% | 33.4% | 29.6% |
| 2015–19 | 21.6% | 36.2% | 32.1% |
| 2020–24 | 25.7% | 39.8% | 35.6% |
| Change | +7.4 pts | +8.0 pts | +7.2 pts |
About a quarter of adults 25 and older in Seneca County (25.7%) have a bachelor's degree or higher, below the national share of 35.6%. The share with a degree has risen 7.4 points since 2006–10, as it has nationally.
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 | New York | U.S. |
|---|---|---|---|
| 2006–10 | 83.8% | 84.0% | 84.9% |
| 2010–14 | 86.0% | 84.9% | 86.1% |
| 2015–19 | 85.8% | 86.5% | 87.7% |
| 2020–24 | 86.0% | 87.3% | 89.3% |
| Change | +2.2 pts | +3.3 pts | +4.3 pts |
About one in seven adults in Seneca County never finished high school, more than nationally: 86.0% have a diploma or equivalent, against 89.3% across the U.S. The share with a diploma has risen 2.2 points since 2006–10, as it has nationally. Only five of New York's 62 counties have a lower share of high school graduates.
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 | New York | U.S. |
|---|---|---|---|
| 2006–10 | 4.9% | 7.7% | 8.1% |
| 2010–14 | 6.9% | 9.2% | 9.4% |
| 2015–19 | 3.4% | 5.7% | 5.6% |
| 2020–24 | 4.6% | 6.6% | 5.4% |
| Change | −0.3 pts | −1.2 pts | −2.7 pts |
Unemployment in Seneca County runs below the national rate: 4.6% of the labor force was out of work and looking, against 5.4% nationally. 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 | 2.33 | 44.0 | 8.5% | 29.0% | 16.0% | 1960 | $1,016 | 25.7% | 86.0% | 4.6% |
| Cayuga County | 2.32 | 44.3 | 12.1% | 28.6% | 13.5% | 1957 | $1,054 | 24.7% | 90.0% | 3.7% |
| Ontario County | 2.28 | 45.1 | 9.2% | 26.3% | 8.5% | 1973 | $1,220 | 38.2% | 93.5% | 3.6% |
| Livingston County | 2.33 | 43.1 | 8.6% | 23.7% | 10.9% | 1967 | $948 | 32.1% | 93.7% | 5.2% |
| Madison County | 2.32 | 42.5 | 9.5% | 21.7% | 13.9% | 1963 | $962 | 31.5% | 92.7% | 4.3% |
| Genesee County | 2.32 | 43.0 | 9.1% | 26.2% | 5.8% | 1955 | $924 | 23.9% | 92.9% | 4.7% |
| Wyoming County | 2.24 | 44.7 | 9.1% | 24.1% | 9.3% | 1958 | $819 | 18.3% | 88.2% | 3.7% |
| Erie County | 2.34 | 41.6 | 11.5% | 34.2% | 8.3% | 1959 | $1,156 | 37.3% | 91.9% | 5.2% |
| Montgomery County | 2.54 | 40.2 | 11.1% | 29.6% | 14.4% | 1954 | $917 | 23.3% | 88.5% | 4.4% |
| Schenectady County | 2.39 | 40.2 | 11.6% | 36.0% | 7.4% | 1958 | $1,287 | 35.9% | 90.6% | 6.4% |
| Bennington County | 2.46 | 47.8 | 8.8% | 26.3% | 23.1% | 1969 | $1,226 | 41.9% | 94.2% | 3.9% |
All figures 2020–24.
Counties with similar populations: Hot Spring County, AR · Winchester City, VA · Isabela Municipio, PR · Wise County, VA · Woodford County, IL · Independence County, AR · Woodford County, KY · Wyoming County, NY · Huntington County, IN · Howell County, MO
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.
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