Jefferson County, Idaho Facts
| Facts | |
| State | Idaho |
| Land area | 1,093.5 square miles |
| Population Density | 23.9 persons per square mile. |
| Population | |
| Population (2013) | 26,914 |
| Population change | 3% | Under 5 years of age | 9.1% |
| Under 18 | 34.7% |
| 65 and over | 10.6% |
| Females | 49.7% |
| White | 96.1 |
| Hispanic or Latino of any race | 10.4 |
| Asian | 0.5% |
| Two or more races | 1.6% |
| Black or African American | 0.4% |
| Native American | 1.3% |
| Pacific Islander | 0.2% |
| Had graduated from high school | 89% |
| Had a bachelor’s degree or higher | 22% |
| Veterans | 1,587 |
| Households and Housing | |
| Households | 8,058 |
| Persons per household | 3.3 |
| Living in the same house for one year or more | 86.8% |
| Median household income | $52,023 |
| The per capita income | $19,598 |
| Live below the poverty line. | 13.1% |
| housing units | 8,781 |
| Multi-unit structures | 6% |
| The median value of owner-occupied housing | $157,500 |
| Residents owning their homes. | 83.8% |
| Business Facts | |
| Total number of firms | 2,929 |
| Women-owned firms | 0% |
| Asian-owned firms | 0% |
| Hispanic-owned firms | 0% |
| Black-owned firms | 0% |
| Native American-owned firms | 1% |
| Pacific Islander-owned firms | 0% |
| Retail sales | $92,388 |
| Retail sales per capita | $4,058 |
| Manufacturers shipments | $0 |
| Merchant wholesaler sales | $0 |