Cassia County, Idaho

Cassia County: County in Idaho, United States


Cassia County is a county located in the U.S. state of Idaho. As of the 2010 census, the population was 22,952 and a population density of 3 people per km². After 9 years in 2019 county had an estimated population of 24,030 inhabitants. Its county seat is Burley. The county was created 144 years ago in 1879.

Quick Facts about Cassia County

Population : 24,030 (2019)
Country : United States of America
State : Idaho (United States)
Area : 6683 km2
Water as percent of area : 0.6%
Land as percent of area : 99.4%
Named for : Cassia Creek
Altitude : 7,884 feet / 2403 meters
Capital : Burley
Establishment : February 02, 1879
Time Zone : America/Boise
Local time : 20:20:08 (27th May 2023)
Density : 4 Pop. per km² as of 2019
Population growth : 4.49% (2010-2019)
Cassia County locator map
Location of Cassia County on Idaho map.
Cassia County Courthouse Idaho image
Cassia County Courthouse Idaho
Cassia County Courthouse Idaho image


Cassia County is located at 42°17'2"N 113°36'1"W (42.2838700, -113.6003700). It has 3 neighbors: Jerome County, Minidoka County and Box Elder County.

Cassia County map

The largest city of Cassia County is Burley with a population of 10,582. Other cities include, Oakley population 812, Declo population 369, Albion population 276 and Malta population 205. See all Cassia County cities & populated places.

Cassia County Populated Places

Cities, Towns, Neighborhoods & Other Populated Places in Cassia County.

City Name Population Title
Burley 10,582 City in Idaho
Oakley 812 City in Idaho
Declo 369 City in Cassia County, Idaho, United States
Albion 276 City in Idaho, USA
Malta 205 City in Idaho, US

Cassia County has 3 neighbours.

  • Burley


The population of Cassia County increased by 4.49% in 9 years.

Year Population % Change Method
2010 22,952 - census
2011 23,106 0.67% estimation process
2012 23,263 0.67% estimation process
2013 23,344 0.35% estimation process
2014 23,503 0.68% estimation process
2015 23,499 -0.02% estimation process
2016 23,479 -0.09% estimation process
2017 23,650 0.72% estimation process
2018 23,791 0.59% estimation process
2019 24,030 0.99% estimation process

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Idaho Other Counties (more counties)

County Name Population Title
Ada County 481,587 County in Idaho, United States
Canyon County 229,849 County in Idaho, United States
Boise 228,959 City in and state capital of Idaho, United States
Kootenai County 165,697 County in Idaho, United States
Bonneville County 119,062 County in Idaho, United States
Meridian 114,161 City in Ada County, Idaho, United States
Nampa 99,277 City in Canyon County, Idaho, United States
Bannock County 87,808 County in Idaho, United States
Twin Falls County 86,878 County in Idaho, United States
Idaho Falls 62,888 City in and the county seat of Bonneville County, Idaho, United States
Caldwell 58,481 City in and county seat of Canyon County, Idaho, United States
Pocatello 56,637 City in Idaho
Coeur d'Alene 52,414 City in Idaho, United States
Twin Falls 50,197 City in Twin Falls County, Idaho, United States
Bingham County 46,811 County in Idaho, United States
Bonner County 45,739 County in Idaho, United States