Day County SD Information


Day County Subdivisions

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


Total Population 5,669
Population in Households 5,530
Population in Familes 4,368
Population in Group Qrtrs 139
Population Density1 6
Diversity Index2 26


Median Household Income $42,458
Average Household Income $59,281
Per Capita Income $26,476


Total Housing Units 3,630 (100%)
Owner Occupied HU 1,991 (54.8%)
Renter Occupied HU 511 (14.1%)
Vacant Housing Units 1,128 (31.1%)
Median Home Value $95,981
Average Home Value $133,149


Total Households 2,502
Average Household Size 2.21
Family Households 1,533
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 -0.09% -0.03%
Households -0.01% 0.02%
Families -0.22% -0.12%
Median Household Income   2.07%
Per Capita Income   2.36%


Day County SD - Peer Comparisons by Rank and Percentile

The table below compares Day 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 # 31 55th
Population Density # 35 48th
Diversity Index # 25 64th
Median Household Income # 56 17th
Per Capita Income # 50 26th

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