Dewey County SD Information


Dewey County Subdivisions

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


Total Population 5,506
Population in Households 5,487
Population in Familes 4,622
Population in Group Qrtrs 19
Population Density1 2
Diversity Index2 45


Median Household Income $40,286
Average Household Income $55,562
Per Capita Income $18,178


Total Housing Units 2,053 (100%)
Owner Occupied HU 1,103 (53.7%)
Renter Occupied HU 694 (33.8%)
Vacant Housing Units 256 (12.5%)
Median Home Value $75,764
Average Home Value $125,884


Total Households 1,797
Average Household Size 3.05
Family Households 1,270
Average Family Size 4
  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 0.46% 0.44%
Households 0.46% 0.44%
Families 0.3% 0.31%
Median Household Income   1.99%
Per Capita Income   1.85%


Dewey County SD - Peer Comparisons by Rank and Percentile

The table below compares Dewey 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 # 35 48th
Population Density # 53 26th
Diversity Index # 9 88th
Median Household Income # 59 12th
Per Capita Income # 60 11th

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