Polk County MO Information


Polk County Subdivisions

Polk County MO Data & Demographics (As of July 1, 2015)


Total Population 30,916
Population in Households 29,405
Population in Familes 24,196
Population in Group Qrtrs 1,511
Population Density1 49
Diversity Index2 13


Total Households 11,617
Average Household Size 2.53
Family Households 8,038
Average Family Size 3


Total Housing Units 13,370 (100%)
Owner Occupied HU 8,170 (61.1%)
Renter Occupied HU 3,447 (25.8%)
Vacant Housing Units 1,753 (13.1%)
Median Home Value $122,274
Average Home Value $133,195


Median Household Income $36,361
Average Household Income $47,367
Per Capita Income $18,309
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population -0.14% -0.06%
Households -0.1% -0.04%
Families -0.22% -0.12%
Median Household Income   2.43%
Per Capita Income   2.89%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.


Polk County MO - Peer Comparisons by Rank and Percentile

The table below compares Polk County to the other 115 counties and county equivalents in Missouri by rank and percentile using July 1, 2015 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 # 38 68th
Population Density1 # 38 68th
Diversity Index2 # 63 46th
Median Household Income # 82 30th
Per Capita Income # 94 19th

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