United States › Idaho › Lemhi County COUNTY
Lemhi County Idaho · 8,474 residents (2025 est.) · 4,564 sq mi
Time machine
COMPARE TO 1990 Census 2000 Census 2009 ACS 2010 ACS 2011 ACS 2012 ACS 2013 ACS 2014 ACS 2015 ACS 2016 ACS 2017 ACS 2018 ACS 2019 ACS 2020 ACS 2021 ACS 2022 ACS 2023 ACS
The short version
Lemhi County is home to 8,249 people in Idaho. At a median age of 53.3, this is an older place than the country as a whole. There are 2 people per square mile. 79% of homes are owner-occupied. The foreign-born share is 1%. 24% of adults hold a bachelor's degree or higher.
At a glance
Lower income
below the US median
US median: $82,259
Older
median age 53.3
US median: 38.9
Less educated
24% hold a bachelor's degree
US average: 36%
Less affordable
home values up 96%, inflation adjusted
US median home: $376,019
Section 01
Population & growth from 7,806 in 2000
8,474 in 2025 (Census Bureau estimate)
from 2 / sq mi in 2009
US average: 281
from 42.7 in 2000
US average: 38.9
Population, 1990 – 2024
7K 7K 8K 8K 8K 1990 2000 2010 2020 2024 Lemhi County Age distribution, 2024
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $53,202
−3%inflation adjusted, since 2000
from $30,185 in 2000
US average: $82,259
from $16,037 in 2000
US average: $44,673
Households earning $100K+
from 15.9% in 2009
US average: 53.3%
from 15.3% in 2000
US average: 12.5%
from 0.449 in 2010
US average: 0.476
Workforce by industry, 2024
Agriculture, forestry, fishing 11.5%
Professional, scientific, technical 3.7%
Public administration 2.6%
Education & health services 1.7%
Arts, entertainment, food 1%
Transportation & warehousing 0.5%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
$326,100
+96%inflation adjusted, since 2000
from $91,300 in 2000
US average: $376,019
$754
+6%inflation adjusted, since 2000
from $390 in 2000
US average: $1,442
from 76.2% in 2000
20.7% rent
from 25.4% in 2009
US average: 10.0%
2.34 people
Unchangedsince 2009
from 2.34 people in 2009
US average: 2.54
from 21.3% in 2009
US average: 22.9%
from 32.8% in 2009
US average: 47.4%
from 4.4 in 2009
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04
Race & ethnicity 2000
White, non-Hispanic 95.5%(7,452)
Hispanic / Latino 2.2%(170)
2024
White, non-Hispanic 91.5%(7,544)
Hispanic / Latino 3.9%(324)
from 14 in 2009
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
from 22 in 2020
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 19 more ancestry groups with data from 17.9% in 2000
US average: 35.6%
High school or higher
from 82.5% in 2000
US average: 89.6%
from 5.6% in 2000
US average: 14.0%
Section 06
Commute & transportation from 13.6 min in 2000
US average: 26.5
from 62.8% in 2009
US average: 68.9%
from 17.2% in 2009
US average: 8.5%
from 0.3% in 2009
US average: 3.2%
from 7.5% in 2009
US average: 15.0%
from 9.8% in 2009
US average: 2.4%
from 1.1% in 2009
US average: 0.4%
from 7.9% in 2009
US average: 8.3%
Section 07
Work & employment from 7.9% in 2011
US average: 5.2%
from 60.2% in 2011
US average: 63.5%
Women 20-64 in the labor force
from 64.6% in 2020
US average: 74.6%
from 10.5% in 2009
US average: 13.1%
from 32.2% in 2009
US average: 42.5%
Section 08
People & community from 1.0% in 2009
US average: 14.1%
from 15.3% in 2009
US average: 6.2%
from 16.9% in 2012
US average: 13.3%
from 15.5% in 2013
US average: 8.4%
from 73.1% in 2017
US average: 91.0%
Computer in household
from 87.9% in 2020
US average: 95.5%
from 86.6% in 2020
US average: 87.7%
from 97.4% in 2016
US average: 77.7%
from 1.5% in 2016
US average: 13.6%
Marital status
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 15.5% in 2013
US average: 8.4%
from 36.0% in 2020
US average: 54.8%
Direct-purchase
from 23.7% in 2020
US average: 13.8%
from 32.3% in 2020
US average: 18.4%
from 20.1% in 2020
US average: 20.9%
VA health care
from 6.9% in 2020
US average: 2.2%
Any private
from 60.9% in 2020
US average: 67.1%
Any public
from 49.8% in 2020
US average: 36.7%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2024
Gulf War (2001 or later) 19.9%(114)
Gulf War (1990s) 17.6%(101)
Share of the 574 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Drill deeper
Places similar to Lemhi County Head to head
Compare Lemhi County to nearby counties LEMHI COUNTY VS
Custer County
Income $67,574 +27%
Home value $381,700 +17%
Population 4,636 −45%
SEE FULL COMPARISON →
LEMHI COUNTY VS
Beaverhead County
Income $61,268 +15%
Home value $308,300 −5%
Population 10,043 +19%
SEE FULL COMPARISON →
LEMHI COUNTY VS
Ravalli County
Income $71,283 +34%
Home value $476,600 +46%
Population 48,582 +473%
SEE FULL COMPARISON →
LEMHI COUNTY VS
Valley County
Income $76,078 +43%
Home value $657,000 +101%
Population 12,831 +51%
SEE FULL COMPARISON →
Frequently asked
How many people live in Lemhi County, Idaho? Lemhi County, Idaho has about 8,249 residents according to the 2024 American Community Survey.
What is the median household income in Lemhi County, Idaho? The typical household in Lemhi County, Idaho earns about $53,202 a year. Half of households make more than that, and half make less.
Is Lemhi County, Idaho expensive? In Lemhi County, Idaho, the median home is worth about $326,100, and the typical rent is about $754 a month.
How educated are people in Lemhi County, Idaho? About 24.1% of adults age 25 and over in Lemhi County, Idaho hold a bachelor's degree or higher.
What is the poverty rate in Lemhi County, Idaho? About 12.8% of people in Lemhi County, Idaho live below the federal poverty line.
Has Lemhi County, Idaho grown since 1990? Yes, Lemhi County, Idaho has grown since 1990. The population has added about 1,350 residents, a change of about 20 percent over that period.
Keep going
Explore from here 