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 380 as of July 1, 2016. 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, 2016.

Neighborhood Data

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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, 2016)


Total Population 380
Population in Households 380
Population in Familes 315
Population in Group Qrtrs 0
Population Density1 1,540
Diversity Index2 12


Total Households 150
Average Household Size 2.53
Family Households 110
Average Family Size 3


Total Housing Units 171 (100%)
Owner Occupied HU 114 (66.7%)
Renter Occupied HU 36 (21.1%)
Vacant Housing Units 21 (12.3%)
Median Home Value $125,893
Average Home Value $212,174


Median Household Income $61,596
Average Household Income $72,214
Per Capita Income $29,613
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.38% 0.11%
Households 0.54% 0.13%
Families 1.7% 0.18%
Median Household Income   3.44%
Per Capita Income   1.79%
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.

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, 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 # 538 47th
Population Density1 # 88 91st
Diversity Index2 # 340 67th
Median Household Income # 185 82nd
Per Capita Income # 288 72nd

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

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