Sully County SD Information


Sully County Subdivisions

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


Total Population 1,422
Population in Households 1,422
Population in Familes 1,156
Population in Group Qrtrs 0
Population Density2 1
Diversity Index3 10


Median Household Income $58,091
Average Household Income $81,899
Per Capita Income $36,342


Total Housing Units 877 (100%)
Owner Occupied HU 478 (54.5%)
Renter Occupied HU 153 (17.4%)
Vacant Housing Units 246 (28.1%)
Median Home Value $108,088
Average Home Value $167,573


Total Households 631
Average Household Size 2.25
Family Households 404
Average Family Size 3
  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 0.43% 0.39%
Households 0.41% 0.38%
Families 0.21% 0.25%
Median Household Income   5.4%
Per Capita Income   4.13%


Sully County SD - Peer Comparisons by Rank and Percentile

The table below compares Sully 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 # 63 6th
Population Density # 61 8th
Diversity Index # 57 15th
Median Household Income # 6 92nd
Per Capita Income # 4 95th

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