Demographic Characteristics of Watertown, South dakota
Total Population: 20,237
Watertown, South dakota Age/Gender Statistics
 Male Population: 9,942 (49.13%) |
 Female Population: 10,295 (50.87%) |
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| Under 5 years | 1,409 | 45 to 54 years: | 2,523 |
| 5 to 9 years: | 1,418 | 55 to 59 years: | 759 |
| 10 to 14 years: | 1,417 | 60 to 64 years: | 748 |
| 15 to 19 years: | 1,741 | 65 to 74 years: | 1,379 |
| 20 to 24 years: | 1,539 | 75 to 84 years: | 1,198 |
| 25 to 34 years: | 2,563 | 85 years and over: | 462 |
| 35 to 44 years: | 3,081 | ||
| Median Age: 35.1 | |||
Watertown, South dakota Racial Statistics
One Race
20,055
White
19,479
Black or African American
28
American Indian and Alaska Native
333
Asian
67
Asian Indian
4
Chinese
8
Filipino
18
Japanese
5
Korean
10
Vietnamese
12
Other Asian
10
Native Hawaiian and Other Pacific Islander
4
Native Hawaiian
2
Guamanian or Chamorro
0
Samoan
1
Other Pacific Islander
1
Some other race
144
Two or more races
182
Watertown, South dakota Hispanic Population Statistics
| Total Hispanic or Latino Population: 259 | |||
| Mexican | Puerto Rican | Cuban | Other |
| 182 | 16 | 1 | 60 |
Watertown, South dakota Relationship Statistics
| In households: 19,861 (98.14%) | In group quarters: 376 (1.86%) | ||
| Householder | 8,385 | Institutionalized | 95 |
| Spouse | 4,245 | Noninstitutionalized | 281 |
| Child | 5,855 | ||
| Own child under 18 years | 5,005 | ||
| Other relatives | 360 | ||
| Under 18 years | 112 | ||
| Nonrelatives | 1,016 | ||
| Unmarried partner | 446 | ||