Irwin, Idaho

Irwin: City in Bonneville County, Idaho, United States

About

Irwin is a city located in the county of Bonneville in the U.S. state of Idaho. Its population at the 2010 census was 219 and a population density of 34 people per km². After 9 years in 2019 city had an estimated population of 247 inhabitants.

Irwin locator map
Location of Irwin on Idaho map.

Quick Facts about Irwin

Population : 247 (2019)
Country : United States of America
State : Idaho (United States)
County : Bonneville County
Postal code : 83428
Phone Area Codes : 208
Area : 6.4 km2
Altitude : 5,325 feet / 1623 meters
Time Zone : America/Boise
Local time : 02:07:24 (5th December 2025)
Density : 39 Pop. per km² as of 2019
Population growth : 11.34% (2010-2019)
Bonneville County Idaho Incorporated and Unincorporated areas Irwin Highlighted locator map image
Bonneville County Idaho Incorporated and Unincorporated areas Irwin Highlighted
Bonneville County Idaho Incorporated and Unincorporated areas Irwin Highlighted locator map image
Bonneville County Idaho Incorporated and Unincorporated areas Irwin Highlighted locator map image

Geography

Irwin is located at 43°24'31"N 111°17'58"W (43.4085300, -111.2993900).

Irwin map

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Demographics

The population of Irwin increased by 11.34% in 9 years.

Year Population % Change Method
2010 219 - census
2011 234 6.41% estimation process
2012 236 0.85% estimation process
2013 235 -0.43% estimation process
2014 237 0.84% estimation process
2015 241 1.66% estimation process
2016 246 2.03% estimation process
2017 247 0.4% estimation process
2018 246 -0.41% estimation process
2019 247 0.4% estimation process

Irwin zip code is 83428. County name: Bonneville, County fips: 16019

Post Office

Post offices near Irwin

Post Office Name City ZIP
Irwin Post Office Irwin (ID) 83428

Other cities in Bonneville County

Cities, towns, neighborhoods & other populated places in Bonneville County , ID.

City Name Population Title
Idaho Falls 62,888 The most populous city in Bonneville County, Idaho.
Ammon 17,115 City in Idaho, United States
Iona 2,354 City in Idaho, United States
Ucon 1,161 City in Bonneville County, Idaho, United States
Swan Valley 245 City in Bonneville County, Idaho, United States