Ada County ID Information


Ada County Subdivisions

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


Total Population 454,935
Daytime Population: Workers 238,906
Daytime Population: Residents 232,268
Total Daytime Population (TDP) 471,174
Ratio TDP/Total Population1 1.04
Population in Households 444,101
Population in Familes 354,925
Population in Group Qrtrs 10,834
Population Density2 432
Diversity Index3 33


Median Household Income $58,845
Average Household Income $78,964
Per Capita Income $30,047


Total Housing Units 181,130 (100%)
Owner Occupied HU 112,682 (62.2%)
Renter Occupied HU 57,575 (31.8%)
Vacant Housing Units 10,873 ( 6.0%)
Median Home Value $225,673
Average Home Value $269,313


Total Households 170,257
Average Household Size 2.61
Family Households 112,684
Average Family Size 3
  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 2.06% 1.94%
Households 1.91% 1.87%
Families 1.76% 1.78%
Median Household Income   1.45%
Per Capita Income   1.99%


Ada County ID - Peer Comparisons by Rank and Percentile

The table below compares Ada 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 # 1 100th
Population Density # 1 100th
Diversity Index # 21 55th
Median Household Income # 2 98th
Per Capita Income # 2 98th

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