Madison County ID Information


Madison County Subdivisions

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


Total Population 42,960
Population in Households 42,327
Population in Familes 31,020
Population in Group Qrtrs 633
Population Density1 92
Diversity Index2 28


Median Household Income $35,937
Average Household Income $54,213
Per Capita Income $15,482


Total Housing Units 13,175 (100%)
Owner Occupied HU 5,196 (39.4%)
Renter Occupied HU 7,008 (53.2%)
Vacant Housing Units 971 ( 7.4%)
Median Home Value $211,555
Average Home Value $256,812


Total Households 12,204
Average Household Size 3.47
Family Households 8,947
Average Family Size 3
  1. Population Density = Total Population per square mile.
  2. 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 1.65% 1.85%
Households 1.71% 1.82%
Families 1.54% 1.72%
Median Household Income   1.03%
Per Capita Income   1.02%


Madison County ID - Peer Comparisons by Rank and Percentile

The table below compares Madison 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 # 9 82nd
Population Density # 4 93rd
Diversity Index # 24 48th
Median Household Income # 43 5th
Per Capita Income # 44 2nd

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