Demographics & People — Watertown, South Dakota

Population Overview

Population (Census)22,859
Estimated 2026~23,500
Median Age39.5
Total Households10,237
Family Households5,575
Average Household Size2.18
Diversity IndexN/A (N/A)

Race & Ethnicity

White20,638
Black or African American277
Asian145
Hispanic or Latino769

Heritage & Ancestry

GroupCount
German9,004
Unclassified or not reported6,129
Norwegian3,568
Other groups2,418
Irish2,242
English1,344
Hispanic: Hispanic or Latino851
Swedish763
American711
Dutch651

Language

English Only20,858
Spanish395
Population 5+21,619

Veterans

Veterans1,680
Population 18+17,565

Commuting

Mean Commute Time12.6 minutes
Work from Home4.8%
Commuter ProfileN/A
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Watertown, South Dakota.