Demographic Characteristics of Jefferson County, Idaho
Total Population: 19,155
Jefferson County, Idaho Age/Gender Statistics
 Male Population: 9,683 (50.55%) |
 Female Population: 9,472 (49.45%) |
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| Under 5 years | 1,711 | 45 to 54 years: | 2,257 |
| 5 to 9 years: | 1,893 | 55 to 59 years: | 780 |
| 10 to 14 years: | 2,058 | 60 to 64 years: | 665 |
| 15 to 19 years: | 1,948 | 65 to 74 years: | 972 |
| 20 to 24 years: | 1,182 | 75 to 84 years: | 632 |
| 25 to 34 years: | 2,116 | 85 years and over: | 171 |
| 35 to 44 years: | 2,770 | ||
| Median Age: 28.8 | |||
Jefferson County, Idaho Racial Statistics
One Race
18,901
White
17,406
Black or African American
53
American Indian and Alaska Native
89
Asian
44
Asian Indian
4
Chinese
4
Filipino
4
Japanese
20
Korean
4
Vietnamese
0
Other Asian
8
Native Hawaiian and Other Pacific Islander
15
Native Hawaiian
2
Guamanian or Chamorro
1
Samoan
5
Other Pacific Islander
7
Some other race
1,294
Two or more races
254
Jefferson County, Idaho Hispanic Population Statistics
| Total Hispanic or Latino Population: 1,907 | |||
| Mexican | Puerto Rican | Cuban | Other |
| 1,702 | 5 | 3 | 197 |
Jefferson County, Idaho Relationship Statistics
| In households: 19,074 (99.58%) | In group quarters: 81 (0.42%) | ||
| Householder | 5,901 | Institutionalized | 20 |
| Spouse | 4,285 | Noninstitutionalized | 61 |
| Child | 7,885 | ||
| Own child under 18 years | 6,610 | ||
| Other relatives | 634 | ||
| Under 18 years | 281 | ||
| Nonrelatives | 369 | ||
| Unmarried partner | 145 | ||