What is the population of Garrison?

The population of Garrison, IA is 355.

Where is Garrison located?

Garrison, IA is located at latitude 42.1441600 and longitude -92.1437900. It is in United States.

What is the area of Garrison?

The area of Garrison, IA is 0.638863 km².

What is the elevation of Garrison?

Garrison, IA has an elevation of 268 meters (879 feet) above sea level.

What time zone is Garrison in?

Garrison, IA is in the America/Chicago time zone.

What state is Garrison in?

Garrison is in the state of Iowa, United States.

What county is Garrison, IA in?

Garrison is in Benton County, Iowa.

How has the population of Garrison changed?

The population of Garrison, IA has decreased from 371 (2010) to 355 (2020), a change of -4.3%.

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Garrison, Iowa

Garrison: city in Benton County, Iowa, United States

About

Garrison is a city located in the county of Benton in the U.S. state of Iowa. Its population at the 2010 census was 371 and a population density of 581 people per km². After 10 years in 2020 city had an estimated population of 355 inhabitants.

Garrison locator map — Location of Garrison on Iowa map.

Quick Facts about Garrison

Population	355 (2020)
Country	United States of America
State	Iowa (United States)
County	Benton County
Postal code	52229
Area	0.64 km²
Water as percent of area	0%
Land as percent of area	100%
Latitude & Longitude	42.1442,-92.1438
Altitude	879 feet / 268 meters
Time Zone	America/Chicago
Local time	01:33:37 (16th April 2026)
Density	556 Pop. per km² as of 2020
Population growth	-4.51% (2010-2020)
Weather	77℉ Chance Rain Showers 7-days weather

Benton County Iowa Incorporated and Unincorporated areas Garrison Highlighted locator map image

Geography

Garrison is located at 42°8'39"N 92°8'38"W (42.1441600, -92.1437900).

Garrison map

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Weather

77°F

Chance Rain Showers

10 to 15 mph S Thursday

A chance of rain showers. Mostly sunny, with a high near 77. Chance of precipitation is 30%.

7-Day Forecast

Demographics

According to census records, the population of Garrison decreased by 4.51% in 10 years.

Year	Population	% Change	Method
2010	371	-	census
2011	375	1.07%	estimation process
2012	371	-1.08%	estimation process
2013	367	-1.09%	estimation process
2014	365	-0.55%	estimation process
2015	365	0%	estimation process
2016	365	0%	estimation process
2017	362	-0.83%	estimation process
2018	361	-0.28%	estimation process
2019	360	-0.28%	estimation process
2020	355	-1.41%	estimation process

Garrison zip code is 52229. County name: Benton, County fips: 19011

Nearby Schools and Colleges

Schools and campuses linked to Garrison, IA. Select a name to open its map and contact details.

Code	Name	City	ZIP
153445	Hawkeye Community College	Waterloo (IA)	50701

Nearby Post Offices

Closest post offices linked to Garrison.

Post Office Name	City	ZIP
Garrison Post Office	Garrison (IA)	52229

Other places with the same name (5)

Garrison, Maryland census-designated place in Baltimore County, Maryland, United States with a population of 8,823 people.
Garrison, North Dakota city in McLean County, North Dakota, United States with a population of 1,458 people.
Garrison, Texas city in Nacogdoches County, Texas, United States with a population of 869 people.
Garrison, Minnesota city in Crow Wing County, Minnesota, USA with a population of 823 people.
Garrison, Nebraska city in Butler County, Nebraska, United States of America with a population of 51 people.

Other cities in Benton County

Cities, towns, neighborhoods & other populated places in Benton County , IA.

City Name	Population	Title
Vinton	5,019	City in Iowa
Belle Plaine	2,417	City in Iowa, United States
Atkins	1,978	City in Benton County, Iowa, United States
Urbana	1,498	City in Benton County, Iowa, United States
Walford	1,436	City in Iowa, United States of America
Shellsburg	957	Human settlement in Benton County, Iowa, United States of America
Newhall	846	City in Iowa, United States
Blairstown	653	City in Benton County, Iowa, United States
Van Horne	646	Human settlement in Benton County, Iowa, United States of America
Keystone	615	Human settlement in Benton County, Iowa, United States of America
Norway	528	City in Iowa, United States
Geneva	154	City in Franklin County, Iowa, United States
Mount Auburn	144	Human settlement in Benton County, Iowa, United States of America
Luzerne	92	City in Benton County, Iowa, United States