City in Codington County, South Dakota · 18.4 sq mi · 1,298 people per sq mi
About 24,000 people live in Watertown. The typical household earns $69,600, and the median resident is 39.5 years old.
2026 projection
From 22,676 in 2020
Poverty rate 9.03%
Men 38.6 · Women 40.7
1880–2026
23,937
2026 projection
5.6% 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.
1880–2026
23,937
2026 projection
5.6% 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 | 23,937 | +201 | 0.85% |
|---|---|---|---|
| 2025 | 23,736 | +255 | 1.09% |
| 2024 | 23,481 | +272 | 1.17% |
| 2023 | 23,209 | +171 | 0.74% |
| 2022 | 23,038 | +240 | 1.05% |
| 2021 | 22,798 | +122 | 0.54% |
| 2020 | 22,676 | +436 | 1.96% |
| 2019 | 22,240 | +10 | 0.04% |
| 2018 | 22,230 | -90 | 0.40% |
| 2017 | 22,320 | +145 | 0.65% |
Showing 10 of 30 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 230 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 11 residents
48% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 48% | 45% | 52% |
| Never married | 32% | 38% | 26% |
| Divorced | 11% | 11% | 11% |
| Widowed | 8% | 5% | 11% |
| Separated | 1% | 2% | <1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau