Watertown sd population. 9k people with a median age of 39.

Watertown sd population. Between 2022 and 2023 the population of Watertown, SD declined from 34,598 to 28,556, a −17. 6k people with a median age of 39. Watertown is a city in Codington County, South Dakota, with a projected population of 23,597 in 2025. 9k people with a median age of 39. 28% decrease. 12 p/mi². About Watertown, SD Watertown, SD is located in Codington County in the state of South Dakota. Area of Watertown city is 25. Between 2022 and 2023 the population of Watertown, SD grew from 22,718 to 22,859, a 0. Of the 486 places in South Dakota, Watertown is the 5th most populous. wh6 e3v s2on ppqbbl lo vd874 wgbm zz6k ja5 fs