Boundary County , Idaho

Boundary County: County in Idaho, United States


Boundary County is a county located in the U.S. state of Idaho. As of the 2010 census, the population was 10,972 and a population density of 3 people per km². After 9 years in 2019 county had an estimated population of 12,245 inhabitants. Its county seat is Bonners Ferry. The county was created 107 years ago in 1915.

Boundary County Quick Facts

Population : 12,245 (2019)
Country : United States of America
State : Idaho (United States)
Area : 3311 km2
Water as percent of area : 0.7%
Land as percent of area : 99.3%
Named for : Canada–United States border
Altitude : 5,456 feet / 1663 meters
Capital : Bonners Ferry
Establishment : January 01, 1915
Time Zone : America/Los_Angeles
Local time : 11:27:49 (29th September 2022)
Density : 4 Pop. per km² as of 2019
Population growth : 10.4% (2010-2019)
Boundary County locator map
Location of Boundary County on Idaho map.
Boundary County Courthouse image
Boundary County Courthouse
Boundary County Courthouse image


Boundary County is located at 48°46'1"N 116°27'46"W (48.7670200, -116.4628800). It has 3 neighbors: Bonner County, Lincoln County and Pend Oreille County.

Boundary County map

The largest city of Boundary County is Bonners Ferry with a population of 2,637. Other cities include and Moyie Springs population 761. See all Boundary County cities & populated places.

Boundary County Populated Places

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

City Name Population Title
Bonners Ferry 2,637 City in Idaho
Moyie Springs 761 City in Bonner County, Idaho, United States

Boundary County has 3 neighbours.

  • Bonners Ferry


The population of Boundary County increased by 10.4% in 9 years.

Year Population % Change Method
2010 10,972 - census
2011 10,823 -1.38% estimation process
2012 10,817 -0.06% estimation process
2013 10,853 0.33% estimation process
2014 10,956 0.94% estimation process
2015 11,299 3.04% estimation process
2016 11,701 3.44% estimation process
2017 11,965 2.21% estimation process
2018 12,016 0.42% estimation process
2019 12,245 1.87% 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