Seymour is located in Naugatuck Valley Planning Region, Connecticut. Seymour has a 2025 population of 17,264 . Seymour is currently growing at a rate of 0.73% annually and its population has increased by 3.31% since the most recent census, which recorded a population of 16,711 in 2020.
The average household income in Seymour is $125,321 with a poverty rate of 6.28%. The median age in Seymour is 40.6 years: 40.4 years for males, and 40.7 years for females. For every 100 females there are 92.2 males.
Data after 2023 is projected based on recent change
The racial composition of Seymour includes 70.31% White, 7.2% Black or African American, 3.93% other race, and smaller percentages for Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (70.31%)
Two or more races (15.64%)
Black or African American (7.2%)
Other race (3.93%)
Asian (2.45%)
Native American (0.25%)
Native Hawaiian or Pacific Islander (0.21%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 11,812 | 70.31% |
| Two or more races | 2,627 | 15.64% |
| Black or African American | 1,209 | 7.2% |
| Other race | 661 | 3.93% |
| Asian | 412 | 2.45% |
| Native American | 42 | 0.25% |
| Native Hawaiian or Pacific Islander | 36 | 0.21% |
Married
Widowed
Divorced
Separated
Never Married
Seymour's average per capita income is $60,049. Household income levels show a median of $103,682. The poverty rate stands at 6.28%.
Name | Median | Mean |
|---|---|---|
| Married Families | $148,990 | - |
| Families | $121,250 | $140,882 |
| Households | $103,682 | $125,321 |
| Non Families | $55,093 | $75,444 |
Average Income
Median Household Income
Poverty Rate