Custer County SD Information


Custer County Subdivisions

Custer County SD Data & Demographics (As of July 1, 2018)


Total Population 9,003
Population in Households 8,748
Population in Familes 7,047
Population in Group Qrtrs 255
Population Density1 6
Diversity Index2 21


Median Household Income $53,083
Average Household Income $67,623
Per Capita Income $30,914


Total Housing Units 5,139 (100%)
Owner Occupied HU 3,293 (64.1%)
Renter Occupied HU 728 (14.2%)
Vacant Housing Units 1,118 (21.8%)
Median Home Value $254,101
Average Home Value $286,183


Total Households 4,021
Average Household Size 2.18
Family Households 2,642
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 1.11% 1.21%
Households 1.23% 1.3%
Families 1.03% 1.18%
Median Household Income   2.93%
Per Capita Income   2.99%


Custer County SD - Peer Comparisons by Rank and Percentile

The table below compares Custer County to the other 66 counties and county equivalents in South Dakota 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 # 21 70th
Population Density # 33 50th
Diversity Index # 32 53rd
Median Household Income # 19 73rd
Per Capita Income # 12 83rd

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