County · Idaho
Boundary County, Idaho
Boundary County, Idaho. Boundary County had 13,997 residents in 2025 by the Census Bureau's estimate, up 16.1% since 2020, faster than Idaho (+10.4%). It holds 2 places (2 cities, villages and boroughs) and 2 census tracts. GEOID 16021.
Residents, July 2025 estimate
13,997
Census Bureau estimate (no margin published)
2020 Census count: 12,056 · ACS 2020-2024: 13,172
Median household income
$67,237
±$10,845 (90% margin)
Idaho: $77,800
Median home value
$410,500
±$34,359 (90% margin)
Idaho: $418,600
Median gross rent
$877
±$61 (90% margin)
Idaho: $1,238
How many people live in Boundary County, and is it growing?
The 2020 Census counted 12,056 residents in Boundary County. The Census Bureau estimates 13,997 for July 1, 2025, up 16.1% since 2020, faster than Idaho (+10.4%). The 2020-2024 American Community Survey puts the population at 13,172 over 1,269 square miles of land.
| Measure | Boundary County | Idaho | Change since 2015-2019 |
|---|---|---|---|
| Total population | 13,172 | 1,934,262 | +1,327 |
| Households | 5,046±225 | 713,005 | +393 |
| Average household size | 2.58±0.11 | 2.64 | no clear change |
| Housing units | 5,615±21 | 795,014 | +141 |
Boundary County's population since 2000
From 9,871 in 2000 to 13,997 in 2025: up 41.8%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Boundary County?
Boundary County holds 2 places: 2 cities, villages and boroughs (incorporated places). The largest is Bonners Ferry with 2,797 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Bonners Ferry | 2,520 | $52,500 |
|---|---|---|
| Moyie Springs | 822 | $61,615 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Boundary County?
The median resident of Boundary County is 43.7 years old; 23.3% are under 18 and 23.5% are 65 or older. The largest group is non-Hispanic white residents at 81.5%, then non-Hispanic residents of two or more races at 7.7%. 4.4% of residents were born outside the United States.
| Measure | Boundary County | Idaho | Change since 2015-2019 |
|---|---|---|---|
| Median age | 43.7±0.6 | 37.3 | no clear change |
| Under 18 years | 23.3%±0.2 pts | 24.1% | – |
| 65 years and over | 23.5%±0.8 pts | 17.0% | – |
| Hispanic or Latino (any race) | 5.7% | 13.6% | +0.7 pts |
| White alone, not Hispanic | 81.5%±3.4 pts | 78.6% | −8.9 pts |
| Black or African American alone, not Hispanic | 0.3%±0.4 pts | 0.7% | – |
| Asian alone, not Hispanic | 2.1%±0.5 pts | 1.3% | +1.2 pts |
| American Indian and Alaska Native alone, not Hispanic | 1.5%±0.7 pts | 0.7% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.3 pts | 0.1% | – |
| Two or more races, not Hispanic | 7.7%±3.2 pts | 4.2% | – |
| Some other race alone, not Hispanic | 1.2%±1.1 pts | 0.6% | – |
| Born outside the United States | 4.4%±1.3 pts | 5.9% | no clear change |
| Speak a language other than English at home (age 5+) | 6.8%±1.7 pts | 11.0% | – |
| Civilian veterans (age 18+) | 11.3%±2.3 pts | 8.0% | – |
| With a disability | 16.8%±2.6 pts | 14.1% | – |
| No health insurance coverage | 14.0%±4.7 pts | 9.1% | no clear change |
| High school graduate or higher (age 25+) | 86.1%±3.6 pts | 91.9% | – |
| Bachelor's degree or higher (age 25+) | 24.0%±4.2 pts | 31.8% | no clear change |
| Graduate or professional degree (age 25+) | 8.4%±2.7 pts | 10.5% | – |
| Moved from another state in the past year | 5.7%±2.4 pts | 4.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Boundary County earn?
Half of Boundary County's 5,046 households earn less than $67,237 a year (±$10,845), against $77,800 in Idaho. In 2015-2019 the median was $53,440 in 2024 dollars, so it rose by $13,797 after inflation. 13.6% of residents live below the poverty line.
| Measure | Boundary County | Idaho | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $67,237±$10,845 | $77,800 | +$13,797 |
| Mean household income | $86,317±$8,780 | $102,747 | – |
| Per capita income | $33,579±$3,174 | $38,952 | no clear change |
| People below the poverty line | 13.6%±4.1 pts | 10.6% | no clear change |
| Children under 18 below the poverty line | 17.8%±8.9 pts | 12.4% | no clear change |
| Households receiving SNAP | 10.8%±3.3 pts | 7.6% | – |
| Households with a broadband subscription | 90.8%±3.1 pts | 91.9% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Boundary County?
Owners occupy 75.3% of Boundary County's occupied homes and renters 24.7%. The median owner-occupied home is valued at $410,500 by its owner (±$34,359). The median renter pays $877 a month including utilities, and 26.8% of renters pay 35% or more of their income on rent.
| Measure | Boundary County | Idaho | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $410,500±$34,359 | $418,600 | +$158,208 |
| Median gross rent | $877±$61 | $1,238 | no clear change |
| Renters paying 35% or more of income on rent | 26.8%±10.4 pts | 36.9% | no clear change |
| Median monthly owner costs, with a mortgage | $1,586±$117 | $1,687 | – |
| Owner-occupied homes | 75.3%±4.9 pts | 72.1% | no clear change |
| Housing units | 5,615±21 | 795,014 | +141 |
| Homeowner vacancy rate | 0.9%±1.1 pts | 0.7% | – |
| Rental vacancy rate | 2.2%±2.2 pts | 3.9% | – |
| Single-family detached homes | 80.3%±4.8 pts | 73.8% | – |
| Mobile homes | 13.3%±4.0 pts | 6.9% | – |
| Built 2020 or later | 3.3%±1.5 pts | 3.9% | – |
| Built 1939 or earlier | 6.7%±2.0 pts | 7.9% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Boundary County building?
Builders took permits for 32 new housing units across Boundary County in 2025 (32 single-family), 2.3 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Boundary County get to work?
71.2% of Boundary County's workers drive alone and 10.4% work from home. The average trip to work takes 18.2 minutes.
| Measure | Boundary County | Idaho | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 49.1%±3.0 pts | 63.0% | – |
| Unemployment rate | 2.6%±2.1 pts | 3.7% | – |
| Drove alone to work | 71.2%±5.4 pts | 72.7% | – |
| Carpooled | 12.7%±4.3 pts | 8.9% | – |
| Public transportation | 0.0%±0.7 pts | 0.5% | – |
| Walked | 4.6%±2.8 pts | 2.6% | – |
| Worked from home | 10.4%±3.3 pts | 13.3% | no clear change |
| Mean travel time to work | 18.2 min±1.7 | 21.6 min | −10.2 min |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Boundary County's census tracts?
Boundary County is divided into 2 census tracts. Among those with a reliable estimate, median household income runs from $57,311 (Tract 9702) to $74,102 (Tract 9701).
| Tract 970116021970100 | 7,591±452 | $74,102 |
|---|---|---|
| Tract 970216021970200 | 5,581±452 | $57,311 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Boundary County compare with Idaho's other counties?
| Measure | Rank |
|---|---|
| Population | 25th of 44 |
| Growth 2020-2025 | 3rd of 44 |
| Residents per square mile | 22nd of 44 |
| Median household income | 24th of 44 |
| Median home value | 10th of 44 |
| Median gross rent | 26th of 44 |
| Poverty rate | 9th of 43 |
| Bachelor's degree or higher | 18th of 44 |
| Median age | 15th of 44 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Boundary County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.