Dewey County SD Information


Dewey County Subdivisions

Dewey County SD Data & Demographics (As of July 1, 2017)


Total Population 5,559
Daytime Population: Workers 2,366
Daytime Population: Residents 3,570
Total Daytime Population (TDP) 5,936
Ratio TDP/Total Population1 1.07
Population in Households 5,540
Population in Familes 4,650
Population in Group Qrtrs 19
Population Density2 2
Diversity Index3 49


Median Household Income $37,338
Average Household Income $54,907
Per Capita Income $17,832


Total Housing Units 2,063 (100%)
Owner Occupied HU 1,072 (52.0%)
Renter Occupied HU 729 (35.3%)
Vacant Housing Units 262 (12.7%)
Median Home Value $73,297
Average Home Value $123,344


Total Households 1,801
Average Household Size 3.08
Family Households 1,279
Average Family Size 4
  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 0.66% 0.51%
Households 0.56% 0.45%
Families 0.44% 0.37%
Median Household Income   2.3%
Per Capita Income   2.94%


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, 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 # 32 53rd
Population Density # 53 26th
Diversity Index # 9 88th
Median Household Income # 62 8th
Per Capita Income # 61 9th

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