Gem County ID Information


Gem County Subdivisions

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  1. Gem County 2018 Demographic Data
  2. Growth Rates forGem County (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Idaho Research Tools (Easy Tools & Current Data)
  3. Idaho Data Comparison Tool - 2018 Demographics

Gem County ID Data & Demographics (As of July 1, 2018)


Total Population 17,925
Population in Households 17,774
Population in Familes 14,827
Population in Group Qrtrs 151
Population Density2 32
Diversity Index3 28


Median Household Income $46,989
Average Household Income $57,624
Per Capita Income $22,468


Total Housing Units 7,485 (100%)
Owner Occupied HU 4,664 (62.3%)
Renter Occupied HU 2,255 (30.1%)
Vacant Housing Units 566 ( 7.6%)
Median Home Value $191,166
Average Home Value $241,702


Total Households 6,919
Average Household Size 2.57
Family Households 4,840
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2018 2018-2023
Population 0.85% 1.04%
Households 0.77% 0.99%
Families 0.59% 0.88%
Median Household Income   2.69%
Per Capita Income   3.28%


Gem County ID - Peer Comparisons by Rank and Percentile

The table below compares Gem County to the other 44 counties and county equivalents in Idaho by rank and percentile using July 1, 2018 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 # 19 59th
Population Density # 12 75th
Diversity Index # 25 45th
Median Household Income # 21 55th
Per Capita Income # 24 48th

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

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Idaho Census Data Comparison Tool

Compare Idaho July 1, 2018 Data
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