Population 16,797 · Census ACS 2020–24
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Population and households in Seymour
Household size in Seymour
| Period | Seymour | New Haven area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.58 | 2.55 | 2.57 | 2.68 |
| 2010–14 | 2.71 | 2.60 | 2.61 | 2.73 |
| 2015–19 | 2.69 | 2.55 | 2.57 | 2.71 |
| 2020–24 | 2.73 | 2.53 | 2.55 | 2.65 |
| Change | +0.15 | −0.02 | −0.02 | −0.03 |
Households in Seymour average 2.73 people, about the same as the country as a whole (2.65). The typical household here is bigger than in the New Haven area overall, where it has 2.53 people. Since 2006–10, household size has climbed from 2.58, even as the national average fell.
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 Seymour
| Period | Seymour | New Haven area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 40.5 | 39.4 | 40.0 | 37.7 |
| 2010–14 | 40.4 | 40.3 | 41.0 | 38.6 |
| 2015–19 | 40.7 | 41.4 | 42.0 | 39.6 |
| 2020–24 | 43.5 | 41.7 | 42.1 | 40.1 |
| Change | +3.0 | +2.3 | +2.1 | +2.3 |
Seymour skews older than the country: its median age is 43.5, against 40.1 nationally. Since 2006–10, the median age has climbed from 40.5, mirroring the country. The youngest areas are in the northeast, the oldest in the west.
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 Seymour
| Period | Seymour | New Haven area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 10.4% | 12.7% | 11.2% | 12.3% |
| 2010–14 | 9.0% | 12.4% | 11.6% | 12.3% |
| 2015–19 | 10.5% | 12.0% | 10.8% | 11.6% |
| 2020–24 | 12.8% | 13.5% | 11.4% | 11.6% |
| Change | +2.4 pts | +0.8 pts | +0.2 pts | −0.6 pts |
Single parents head about one in eight households in Seymour (12.8%), a bit above the national share of 11.6%. The single-parent share has risen 2.4 points since 2006–10, even as the national share fell. Seymour has a higher share of single-parent households than the great majority of Connecticut cities.
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 Seymour
Renters in Seymour
| Period | Seymour | New Haven area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 23.9% | 34.7% | 30.8% | 33.3% |
| 2010–14 | 24.3% | 36.8% | 32.7% | 35.6% |
| 2015–19 | 28.9% | 38.2% | 33.9% | 36.0% |
| 2020–24 | 25.7% | 37.6% | 33.5% | 34.8% |
| Change | +1.9 pts | +2.9 pts | +2.7 pts | +1.5 pts |
Most households in Seymour own their homes; 25.7% rent, below the national share of 34.8%. Among homeowners, 29.0% have no mortgage at all, well below the national share of 39.8%. Rentals cluster in the east; owners are most common in the southwest. The renter share has risen 1.9 points since 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 Seymour
| Period | Seymour | New Haven area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.6% | 9.1% | 8.8% | 11.4% |
| 2010–14 | 7.5% | 10.6% | 9.5% | 11.4% |
| 2015–19 | 7.4% | 10.8% | 10.2% | 11.1% |
| 2020–24 | 4.1% | 8.0% | 7.9% | 9.6% |
| Change | −1.5 pts | −1.2 pts | −0.9 pts | −1.8 pts |
Empty homes are scarce in Seymour: just 4.1% sit vacant, compared with 9.6% nationally, a sign of a tight housing market. Since 2006–10, vacancy has fallen 1.5 points, mirroring the country. Only 11 of the 145 Connecticut cities with 5,000+ people have a lower vacancy rate.
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 Seymour
| Period | Seymour | New Haven area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 1965 | 1961 | 1963 | 1974 |
| 2010–14 | 1965 | 1961 | 1964 | 1975 |
| 2015–19 | 1964 | 1961 | 1964 | 1977 |
| 2020–24 | 1972 | 1964 | 1967 | 1980 |
| Change | +7 | +3 | +4 | +6 |
Homes in Seymour run older than the national norm, with a median build year of 1972 against 1980. Still, homes here are newer than in the wider New Haven area, where the median home dates to 1964. The median year built has moved up from 1965 in 2006–10, a sign of steady new building. The newest homes are mostly in the southwest, the oldest in the east.
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 Seymour
| Period | Seymour | New Haven area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | $975 | $1,093 | $1,127 | $965 |
| 2010–14 | $1,007 | $1,175 | $1,218 | $1,040 |
| 2015–19 | $1,197 | $1,288 | $1,380 | $1,213 |
| 2020–24 | $1,598 | $1,584 | $1,702 | $1,571 |
| Change | +$623 | +$491 | +$575 | +$606 |
The median renter in Seymour pays $1,598 a month for rent and utilities, close to the national median of $1,571. Rents are up $623 a month from 2006–10, a 64% jump, roughly in step with the nation. Rent takes 30.0% of the typical renter's income, just over the 30% mark often used to define affordable rent.
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 Seymour
Bachelor's degrees in Seymour
| Period | Seymour | New Haven area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 25.6% | 31.6% | 35.5% | 28.4% |
| 2010–14 | 30.6% | 33.1% | 37.0% | 29.6% |
| 2015–19 | 28.7% | 34.5% | 39.2% | 32.1% |
| 2020–24 | 32.1% | 38.5% | 42.3% | 35.6% |
| Change | +6.6 pts | +6.9 pts | +6.8 pts | +7.2 pts |
Nearly a third of adults 25 and older in Seymour (32.1%) have a bachelor's degree or higher, a little below the national share of 35.6%. The share with a degree is up 6.6 points from 2006–10, in line with the national trend. College graduates are most concentrated in the northeast and least in the center.
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 Seymour
| Period | Seymour | New Haven area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 92.7% | 87.4% | 88.1% | 84.9% |
| 2010–14 | 94.8% | 88.4% | 89.2% | 86.1% |
| 2015–19 | 93.9% | 89.6% | 90.4% | 87.7% |
| 2020–24 | 92.6% | 90.6% | 91.2% | 89.3% |
| Change | −0.1 pts | +3.2 pts | +3.1 pts | +4.3 pts |
High school completion in Seymour is above the national rate: 92.6% of adults have a diploma or equivalent, against 89.3%. Compared with other Connecticut cities, though, Seymour has a lower share of high school graduates than most.
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 Seymour
| Period | Seymour | New Haven area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.9% | 8.5% | 7.8% | 8.1% |
| 2010–14 | 11.5% | 10.7% | 9.7% | 9.4% |
| 2015–19 | 5.6% | 6.7% | 6.2% | 5.6% |
| 2020–24 | 5.3% | 6.4% | 5.6% | 5.4% |
| Change | −0.6 pts | −2.2 pts | −2.1 pts | −2.7 pts |
Unemployment in Seymour is close to the national rate: 5.3% of the labor force, against 5.4%. The rate is lower than in the New Haven area as a whole (6.4%). 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).
Seymour 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Seymour | 2.73 | 43.5 | 12.8% | 25.7% | 4.1% | 1972 | $1,598 | 32.1% | 92.6% | 5.3% |
| Ansonia | 2.65 | 40.3 | 14.6% | 41.9% | 9.5% | 1950 | $1,545 | 21.1% | 89.9% | 9.9% |
| Oxford | 2.64 | 45.9 | 1.6% | 9.4% | 4.1% | 1988 | $1,389 | 46.9% | 97.5% | 2.4% |
| Beacon Falls | 2.42 | 44.1 | 8.0% | 14.4% | 1.3% | 1982 | $1,986 | 46.3% | 99.0% | 4.4% |
| Woodbridge | 2.76 | 48.2 | 5.4% | 6.8% | 10.5% | 1967 | $1,803 | 71.1% | 96.4% | 6.5% |
| Derby | 2.13 | 46.2 | 13.1% | 38.1% | 7.4% | 1964 | $1,487 | 35.1% | 88.7% | 6.1% |
| Bethany | 3.04 | 45.9 | 10.0% | 2.7% | 9.1% | 1973 | $1,535 | 56.8% | 99.3% | 2.0% |
| Spring Glen | 2.72 | 49.0 | 4.2% | 12.6% | 11.5% | 1969 | $1,721 | 57.5% | 93.5% | 2.3% |
| Shelton | 2.62 | 45.6 | 7.5% | 23.5% | 6.2% | 1976 | $1,802 | 42.6% | 93.1% | 4.8% |
| Cedarhurst | 3.08 | 39.1 | 10.5% | 8.3% | 5.0% | 1984 | $1,999 | 56.1% | 99.0% | 3.3% |
| Naugatuck | 2.55 | 40.7 | 12.8% | 32.2% | 5.2% | 1967 | $1,333 | 33.4% | 91.9% | 5.0% |
All figures 2020–24.
Cities with similar populations: Grimes, IA · Hartland, WI · Harrodsburg, KY · Harper Woods, MI · Hampton, NH · Ham Lake, MN · Haddonfield, NJ · Guntersville, AL · Grosse Pointe Woods, MI · Hastings, MI
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 Seymour. 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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