Garrison, IA Profile: Facts, Map & Data


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Garrison, Iowa - Basic Facts

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The City of Garrison had a population of 377 as of July 1, 2017. Garrison ranks in the upper quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in Iowa. See peer rankings below.

The primary coordinate point for Garrison is located at latitude 42.144 and longitude -92.1432 in Benton County. The formal boundaries for the City of Garrison (see map below) encompass a land area of 0.25 sq. miles and a water area of 0 sq. miles. Benton County is in the Central time zone (GMT -6). The elevation is 876 feet.

The City of Garrison (GNIS ID: 2394860) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of Garrison is located within Township of Jackson, a minor civil division (MCD) of Benton County.

Beneath the boundary map are tables with Garrison population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

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City of Garrison, IA Boundary Map

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Boundary Maps: Township of Jackson | Benton County | Iowa Counties

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


Total Population 377
Daytime Population: Workers 82
Daytime Population: Residents 187
Total Daytime Population (TDP) 269
Ratio TDP/Total Population1 0.71
Population in Households 377
Population in Familes 312
Population in Group Qrtrs 0
Population Density2 1,528
Diversity Index3 13


Median Household Income $61,429
Average Household Income $72,448
Per Capita Income $29,745


Total Housing Units 170 (100%)
Owner Occupied HU 113 (66.5%)
Renter Occupied HU 35 (20.6%)
Vacant Housing Units 21 (12.4%)
Median Home Value $147,826
Average Home Value $264,063


Total Households 149
Average Household Size 2.53
Family Households 109
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 0.22% 0.0%
Households 0.38% 0.0%
Families 1.34% 0.0%
Median Household Income   2.42%
Per Capita Income   2.59%

Garrison, IA - Peer Comparisons by Rank and Percentile

The table below compares Garrison to the other 1,009 incorporated cities, towns and CDPs 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 # 539 47th
Population Density # 91 91st
Diversity Index # 344 66th
Median Household Income # 218 78th
Per Capita Income # 313 69th

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

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