Population 35,538 · Census ACS 2020–24
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Population and households in Seneca
Household size in Seneca
| Period | Seneca | Greenville area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.41 | 2.51 | 2.54 | 2.68 |
| 2010–14 | 2.42 | 2.58 | 2.59 | 2.73 |
| 2015–19 | 2.38 | 2.57 | 2.57 | 2.71 |
| 2020–24 | 2.29 | 2.50 | 2.50 | 2.65 |
| Change | −0.12 | −0.01 | −0.04 | −0.03 |
Seneca is a place of small households, averaging 2.29 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Since 2006–10, household size has dropped from 2.41, a much bigger shift than nationally. Seneca has smaller households than at least four in five South Carolina cities.
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
| Period | Seneca | Greenville area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 42.0 | 38.1 | 38.3 | 37.7 |
| 2010–14 | 41.6 | 39.0 | 39.3 | 38.6 |
| 2015–19 | 42.8 | 39.6 | 40.6 | 39.6 |
| 2020–24 | 43.6 | 39.7 | 41.2 | 40.1 |
| Change | +1.7 | +1.6 | +2.9 | +2.3 |
Seneca skews older than the country: its median age is 43.6, against 40.1 nationally. Since 2006–10, the median age has climbed from 42.0, in line with the national trend. The youngest areas are in the east, the oldest in the north.
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
| Period | Seneca | Greenville area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.7% | 11.5% | 13.0% | 12.3% |
| 2010–14 | 11.5% | 11.6% | 13.0% | 12.3% |
| 2015–19 | 11.4% | 10.4% | 11.8% | 11.6% |
| 2020–24 | 10.8% | 10.7% | 11.7% | 11.6% |
| Change | +1.2 pts | −0.8 pts | −1.3 pts | −0.6 pts |
Single-parent households are about as common in Seneca as they are nationally: 10.8%, against 11.6%. The single-parent share has edged up 1.2 points since 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
Renters in Seneca
| Period | Seneca | Greenville area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 28.1% | 30.0% | 30.1% | 33.3% |
| 2010–14 | 30.2% | 31.5% | 31.4% | 35.6% |
| 2015–19 | 33.0% | 31.4% | 30.6% | 36.0% |
| 2020–24 | 31.0% | 29.3% | 28.1% | 34.8% |
| Change | +3.0 pts | −0.7 pts | −2.0 pts | +1.5 pts |
Just over three in ten households in Seneca rent their homes (31.0%), a little below the national share of 34.8%; the rest own. About half of owners (49.9%) have paid off their mortgages, well above the national share of 39.8%. Renting is most common in the center and least common in the north. The renter share has risen 3.0 points since 2006–10, mirroring the country.
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
| Period | Seneca | Greenville area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 17.1% | 12.2% | 14.2% | 11.4% |
| 2010–14 | 18.5% | 12.0% | 14.2% | 11.4% |
| 2015–19 | 16.2% | 10.8% | 13.3% | 11.1% |
| 2020–24 | 15.1% | 9.6% | 11.8% | 9.6% |
| Change | −2.0 pts | −2.6 pts | −2.5 pts | −1.8 pts |
Vacancy is high in Seneca: 15.1% 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. Since 2006–10, vacancy has fallen 2.0 points, 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
| Period | Seneca | Greenville area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 1983 | 1982 | 1984 | 1974 |
| 2010–14 | 1986 | 1984 | 1985 | 1975 |
| 2015–19 | 1986 | 1985 | 1987 | 1977 |
| 2020–24 | 1988 | 1989 | 1991 | 1980 |
| Change | +5 | +7 | +7 | +6 |
Seneca has newer housing than the country as a whole: the median home was built in 1988, versus 1980 nationally. The median year built has moved up from 1983 in 2006–10, a sign of steady new building. The newest homes are mostly in the north, the oldest in the center.
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
| Period | Seneca | Greenville area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | $601 | $733 | $780 | $965 |
| 2010–14 | $752 | $816 | $859 | $1,040 |
| 2015–19 | $823 | $939 | $984 | $1,213 |
| 2020–24 | $953 | $1,216 | $1,294 | $1,571 |
| Change | +$353 | +$483 | +$514 | +$606 |
Rent in Seneca runs $953 a month at the median, utilities included, well below the U.S. median of $1,571. Rents are up $353 a month from 2006–10, a 59% rise, a slower climb than the nation's. The typical renter here spends 31.9% of household income on rent, just over the 30% mark often used to define affordable rent. Rents run highest in the southeast and lowest in the center.
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
Bachelor's degrees in Seneca
| Period | Seneca | Greenville area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 26.0% | 26.8% | 25.2% | 28.4% |
| 2010–14 | 26.6% | 27.6% | 26.5% | 29.6% |
| 2015–19 | 28.5% | 30.8% | 28.9% | 32.1% |
| 2020–24 | 30.6% | 35.6% | 32.6% | 35.6% |
| Change | +4.6 pts | +8.8 pts | +7.4 pts | +7.2 pts |
College degrees are a little less common in Seneca than nationally: 30.6% of adults 25 and older have a bachelor's or higher, against 35.6%. Since 2006–10, the share with a degree has risen 4.6 points, in line with the national trend. College graduates are most concentrated in the north and least in the south.
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
| Period | Seneca | Greenville area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 82.6% | 82.9% | 84.0% | 84.9% |
| 2010–14 | 84.4% | 84.9% | 85.7% | 86.1% |
| 2015–19 | 86.6% | 86.7% | 87.8% | 87.7% |
| 2020–24 | 88.4% | 89.5% | 90.2% | 89.3% |
| Change | +5.8 pts | +6.6 pts | +6.2 pts | +4.3 pts |
High school completion in Seneca is close to the national rate: 88.4% of adults have a diploma or equivalent, against 89.3%. The share with a diploma has risen 5.8 points since 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
| Period | Seneca | Greenville area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 10.3% | 8.8% | 9.1% | 8.1% |
| 2010–14 | 13.1% | 9.5% | 10.6% | 9.4% |
| 2015–19 | 4.0% | 5.0% | 5.8% | 5.6% |
| 2020–24 | 6.2% | 4.6% | 4.9% | 5.4% |
| Change | −4.2 pts | −4.2 pts | −4.2 pts | −2.7 pts |
Unemployment runs a little high in Seneca: 6.2% of the labor force was out of work and looking, against 5.4% nationally. Since 2006–10, unemployment has fallen 4.2 points, in line with the national trend. Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's 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 compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Seneca | 2.29 | 43.6 | 10.8% | 31.0% | 15.1% | 1988 | $953 | 30.6% | 88.4% | 6.2% |
| Keowee | 1.89 | 28.2 | 1.5% | 33.9% | 9.4% | 1996 | $1,037 | 61.8% | 97.0% | 7.4% |
| Newry | 2.03 | 55.0 | 2.2% | 19.2% | 15.6% | 1998 | $944 | 57.0% | 94.4% | 3.3% |
| Clemson | 2.51 | 25.7 | 5.9% | 66.5% | 18.1% | 1984 | $1,181 | 68.1% | 97.3% | 7.4% |
| West Union | 2.39 | 46.1 | 8.1% | 17.0% | 14.3% | 1992 | $881 | 31.2% | 87.9% | 4.5% |
| Walhalla | 2.53 | 44.1 | 11.3% | 26.6% | 13.7% | 1982 | $1,022 | 21.5% | 83.2% | 6.6% |
| Westminster | 2.37 | 45.3 | 9.2% | 18.5% | 23.1% | 1985 | $767 | 17.1% | 83.1% | 4.0% |
| Central | 2.41 | 33.6 | 9.1% | 42.3% | 10.9% | 1989 | $851 | 42.5% | 92.8% | 3.4% |
| Townville | 2.29 | 50.9 | 8.7% | 5.8% | 30.0% | 1992 | $855 | 41.7% | 95.6% | 4.7% |
| La France | 2.27 | 39.5 | 5.3% | 18.4% | 17.5% | 1990 | $1,298 | 46.7% | 96.7% | 2.6% |
| Pendleton | 2.42 | 40.1 | 9.2% | 29.5% | 10.3% | 1993 | $1,138 | 39.8% | 90.9% | 2.5% |
All figures 2020–24.
Cities with similar populations: San Luis, AZ · Greenfield, IN · Harker Heights, TX · Havertown, PA · Huntington, NY · Huntington Station, NY · Inver Grove Heights, MN · Isabela, PR · Juncos, PR · Kingston, NY
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. 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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