Marshall County IA Information


Marshall County Subdivisions

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


Total Population 41,088
Population in Households 39,697
Population in Familes 32,248
Population in Group Qrtrs 1,391
Population Density1 72
Diversity Index2 50


Total Households 15,608
Average Household Size 2.54
Family Households 10,421
Average Family Size 3


Total Housing Units 17,021 (100%)
Owner Occupied HU 11,243 (66.1%)
Renter Occupied HU 4,365 (25.6%)
Vacant Housing Units 1,413 ( 8.3%)
Median Home Value $118,547
Average Home Value $142,473


Median Household Income $50,757
Average Household Income $62,653
Per Capita Income $24,272
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.17% 0.15%
Households 0.07% 0.09%
Families -0.05% 0.03%
Median Household Income   1.92%
Per Capita Income   1.95%
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.


Marshall County IA - Peer Comparisons by Rank and Percentile

The table below compares Marshall 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 # 15 86th
Population Density1 # 16 85th
Diversity Index2 # 4 97th
Median Household Income # 47 54th
Per Capita Income # 81 19th

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