Marion County IA Information


Marion County Subdivisions

Marion County IA Data & Demographics (As of July 1, 2016)


Total Population 33,760
Population in Households 32,315
Population in Familes 27,064
Population in Group Qrtrs 1,445
Population Density1 61
Diversity Index2 12


Total Households 13,190
Average Household Size 2.45
Family Households 9,129
Average Family Size 3


Total Housing Units 14,484 (100%)
Owner Occupied HU 9,808 (67.7%)
Renter Occupied HU 3,382 (23.3%)
Vacant Housing Units 1,294 ( 8.9%)
Median Home Value $163,662
Average Home Value $183,965


Median Household Income $56,292
Average Household Income $70,942
Per Capita Income $28,170
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.22% 0.38%
Households 0.58% 0.51%
Families 0.47% 0.44%
Median Household Income   3.0%
Per Capita Income   2.17%
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.


Marion County IA - Peer Comparisons by Rank and Percentile

The table below compares Marion County to the other 99 counties and county equivalents in Iowa by rank and percentile using July 1, 2016 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 # 22 79th
Population Density1 # 19 82nd
Diversity Index2 # 58 43rd
Median Household Income # 14 87th
Per Capita Income # 25 76th

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