Jefferson County ID Information


Jefferson County Subdivisions

Jefferson County ID Data & Demographics (As of July 1, 2017)


Total Population 27,909
Daytime Population: Workers 7,842
Daytime Population: Residents 15,583
Total Daytime Population (TDP) 23,425
Ratio TDP/Total Population1 0.84
Population in Households 27,798
Population in Familes 25,449
Population in Group Qrtrs 111
Population Density2 26
Diversity Index3 34


Median Household Income $55,341
Average Household Income $68,103
Per Capita Income $21,172


Total Housing Units 9,237 (100%)
Owner Occupied HU 6,992 (75.7%)
Renter Occupied HU 1,641 (17.8%)
Vacant Housing Units 604 ( 6.5%)
Median Home Value $184,510
Average Home Value $210,280


Total Households 8,633
Average Household Size 3.22
Family Households 7,059
Average Family Size 4
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.91% 0.86%
Households 0.8% 0.79%
Families 0.73% 0.74%
Median Household Income   1.44%
Per Capita Income   2.17%


Jefferson County ID - Peer Comparisons by Rank and Percentile

The table below compares Jefferson County to the other 44 counties and county equivalents in Idaho by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 12 75th
Population Density # 14 70th
Diversity Index # 20 57th
Median Household Income # 3 95th
Per Capita Income # 24 48th

Additional comparisons and rankings can be made with a VERY EASY TO USE Idaho Census Data Comparison Tool.