Township in Naugatuck Valley Planning Region County, Connecticut · 21.9 sq mi · 546 people per sq mi
About 12,000 people live in Plymouth. The typical household earns $94,514, and the median resident is 44.6 years old.
2026 projection
From 11,652 in 2020
Poverty rate 8.5%
Men 44.3 · Women 45.7
2010–2026
11,941
2026 projection
2.5% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
2010–2026
11,941
2026 projection
2.5% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 11,941 | +39 | 0.33% |
|---|---|---|---|
| 2025 | 11,902 | +39 | 0.33% |
| 2024 | 11,863 | +58 | 0.49% |
| 2023 | 11,805 | +73 | 0.62% |
| 2022 | 11,732 | +30 | 0.26% |
| 2021 | 11,702 | +50 | 0.43% |
| 2020 | 11,652 | +45 | 0.39% |
| 2019 | 11,607 | -56 | 0.48% |
| 2018 | 11,663 | -33 | 0.28% |
| 2017 | 11,696 | -81 | 0.69% |
Showing 10 of 17 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 117 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 12 residents
47% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 47% | 49% | 46% |
| Never married | 31% | 34% | 29% |
| Divorced | 12% | 11% | 12% |
| Widowed | 8% | 5% | 11% |
| Separated | 2% | <1% | 3% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau