Grundy County IA Information


Grundy County Subdivisions

Grundy County IA Data & Demographics (As of July 1, 2017)


Total Population 12,526
Daytime Population: Workers 4,288
Daytime Population: Residents 6,303
Total Daytime Population (TDP) 10,591
Ratio TDP/Total Population1 0.85
Population in Households 12,372
Population in Familes 10,339
Population in Group Qrtrs 154
Population Density2 25
Diversity Index3 7


Median Household Income $57,904
Average Household Income $76,722
Per Capita Income $31,971


Total Housing Units 5,693 (100%)
Owner Occupied HU 4,221 (74.1%)
Renter Occupied HU 969 (17.0%)
Vacant Housing Units 503 ( 8.8%)
Median Home Value $134,050
Average Home Value $169,480


Total Households 5,190
Average Household Size 2.38
Family Households 3,610
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 0.08% 0.24%
Households 0.16% 0.29%
Families 0.02% 0.21%
Median Household Income   1.85%
Per Capita Income   2.82%


Grundy County IA - Peer Comparisons by Rank and Percentile

The table below compares Grundy County to the other 99 counties and county equivalents in Iowa by rank and percentile using July 1, 2017 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 # 61 39th
Population Density # 55 44th
Diversity Index # 93 8th
Median Household Income # 15 86th
Per Capita Income # 5 96th

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

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