Lemhi County, ID demographics:
population, income, and more

Total population
8,249
1.0% year-over-year change
Median household income
$53,202/yr
2.2% year-over-year change
Housing units
4,676
0.9% year-over-year change

Lemhi County population

How many people live in Lemhi County

Lemhi County is home to 8,249 residents, according to the most recent Census data. Gender-wise, 50.9% of Lemhi County locals are male, and 49.1% are female.

Total population
8,249
1.0% year-over-year change
Gender ratio
Male
50.9%
4,197
Female
49.1%
4,052
Value Percent YoY change
Male 4,197 50.9% 1.1%
Female 4,052 49.1% 0.9%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Lemhi County is 53, with the population distributed as follows: about 13.8% are children under 15, then 11.8% are in the 15 to 24 age group. Adults between 25 and 44 make up 17.3% of the population, while another 26.2% fall into the 45 to 64 bracket. Finally, around 30.9% are 65 or older.

Median age
53.3
Age breakdown
Under 15
13.8%
15 to 24
11.8%
25 to 44
17.3%
45 to 64
26.2%
Over 65
30.9%
Value Percent YoY change
Under 15 1,134 13.8% -6.3%
15 to 24 976 11.8% 5.9%
25 to 44 1,430 17.3% 1.2%
45 to 64 2,159 26.2% 1.1%
Over 65 2,550 30.9% 2.6%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Lemhi County, 99% of the population are US-born citizens, while 0.6% have gained naturalized citizenship. At the same time, 0.3% of residents are non-citizens. As for race, 92.4% of locals are Caucasian, 0.1% are African American and 0.2% have Asian roots. Another 0.4% are Indigenous American, 0.1% are Pacific Islanders, while 1.1% identify as another race. There’s also a share of 5.7% that includes residents with two or more races.

Citizenship
U.S.-born citizens
99%
Non-U.S.-born citizens
0.6%
Non-citizens
0.3%
Value Percent YoY change
U.S.-born citizens 8,168 99% 1.0%
Non-U.S.-born citizens 54 0.6% 22.7%
Non-citizens 27 0.3% -28.9%
Racial breakdown
White
92.4%
Black or African American
0.1%
American Indian and Alaska Native
0.4%
Asian
0.2%
Native Hawaiian and other Pacific Islander
0.1%
Two or more races
5.7%
Other
1.1%
Value Percent
White 7,624 92.4%
Black or African American 8 0.1%
American Indian and Alaska Native 34 0.4%
Asian 13 0.2%
Native Hawaiian and other Pacific Islander 10 0.1%
Two or more races 470 5.7%
Other 90 1.1%

Households in Lemhi County

A peek inside Lemhi County households

Lemhi County has 3,458 households, with an average of 2 members in each. Of these, 56% are families, while the remaining 44% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
3,458
3.2% year-over-year change
Average people per household
2
Non-family households
1,522
Family households
1,936
Value Percent YoY change
Non-family households 1,522 44% 2.0%
Family households 1,936 56% 4.2%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Lemhi County

The housing landscape of Lemhi County

Lemhi County's housing consists of 4,676 units, with 74% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 0.8% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 15.6% of the housing landscape.

Housing units
4,676
0.9% year-over-year change
Housing types
Value Percent
1 unit, detached 3,461 74%
1 unit, attached 38 0.8%
2 units 129 2.8%
3 or 4 units 149 3.2%
5 to 9 units 69 1.5%
10 to 19 units 20 0.4%
20 to 49 units 13 0.3%
50 or more units 35 0.8%
Mobile home 728 15.6%
Boat, RV, van, etc. 34 0.7%
Homes built since 2020
80
116.2% year-over-year change

The age of buildings in Lemhi County

In Lemhi County, the median construction year is 1979. About 11.1% of homes were built before the 1940s, with another 4.9% going up by 1949. Most development happened in the second half of the 20th century. Then, 10.6% of homes were added from 2000 to 2009, 5.4% between 2010 and 2019, and 1.7% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 518 11.1% 17.5%
Built between 1940 and 1949 231 4.9% -5.3%
Built between 1950 and 1959 307 6.6% 2.3%
Built between 1960 and 1969 257 5.5% -18.4%
Built between 1970 and 1979 1,164 24.9% 4.5%
Built between 1980 and 1989 636 13.6% -4.5%
Built between 1990 and 1999 735 15.7% -2.8%
Built between 2000 and 2009 498 10.6% 16.6%
Built between 2010 and 2019 250 5.4% -25.6%
Built in 2020 or later 80 1.7% 116.2%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Lemhi County occupancy rates

Out of the 3,458 occupied housing units in Lemhi County, 79.3% are owner-occupied, while 20.7% are lived in by tenants. Meanwhile, 26% of all homes on the local market sit vacant.

Occupied housing units
3,458
3.2% year-over-year change
Occupancy breakdown
Renter occupied
717
Owner occupied
2,741
Value Percent YoY
change
Renter occupied 717 20.7% 14.7%
Owner occupied 2,741 79.3% 0.6%
Unoccupied housing units
26.0%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Lemhi County housing costs

Housing costs in Lemhi County come to a median of $756 per month, while tenants specifically pay a median gross rent of $754.

Median housing costs per month
$756/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Lemhi County
$754/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Lemhi County

Lemhi County education at a glance

About 45.4% of the population in Lemhi County went to high school, while 21.3% pursued college studies. Another 10% earned an associate degree and 14.5% hold a bachelor’s. Meanwhile, 7.7% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 75 1.1% 36.4%
High school diploma 3,108 45.4% 11.5%
College diploma 1,461 21.3% -14.5%
Associate degree 685 10% -6.9%
Bachelor's degree 995 14.5% 16.1%
Graduate degree 526 7.7% 0.0%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Lemhi County

How much people earn in Lemhi County

The average annual household income in Lemhi County was $74,280 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +1.9% change from the previous year. At the same time, the median income stood at $53,202, reflecting a +2.2% shift over the same period.

Average household income in Lemhi County
$74,280/year
1.9% year-over-year change
Median household income in Lemhi County
$53,202/year
2.2% year-over-year change

Lemhi County income by age

In Lemhi County, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $69,716. Those with someone between 45 and 64 in charge, often well established professionally, earn $58,222 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $43,964, while those led by someone over 65, many of whom may be retired, have about $39,635 in earnings. Overall, 87.4% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $43,964 N/A
25 - 44 $69,716 0.5%
45 - 64 $58,222 3.4%
Over 65 $39,635 6.3%
Above poverty level
7,075
Below poverty level
1,020
Value Percent YoY
change
Above poverty level 7,075 87.4% 1.2%
Below poverty level 1,020 12.6% 9.1%

Employment in Lemhi County

Workforce and job types in Lemhi County

The job market in Lemhi County is powered by 3,568 working residents, spread across a range of industries and roles. 69.7% of the working population are employed in professional or administrative positions, while 30.3% are in hands-on or service-based jobs. Also, 16% run their own businesses, 59.1% are employed by private companies, and 15.7% work in the public sector.

Workforce demographics

Working population
3,568
2.3% year-over-year change
White collar
2,486
Blue collar
1,082
Value Percent YoY change
White collar 2,486 69.7% 4.1%
Blue collar 1,082 30.3% -1.6%
Employer type
Self employees
16%
Private companies
59.1%
Governmental workers
15.7%
Not for profit companies
9.1%
Value Percent YoY change
Self employees 572 16% -10.6%
Private companies 2,110 59.1% 2.2%
Governmental workers 560 15.7% 19.1%
Not for profit companies 326 9.1% 4.2%
Unemployment rate
2.0%
-38.8% year-over-year change

Available workforce

The unemployment rate in Lemhi County stands at 2%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Lemhi County

How people get around in Lemhi County

In Lemhi County, the average commute time is 16 minutes. Commuting methods vary: 80.6% of residents travel by personal vehicle and 6.6% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Commute time
16 min
4.7% year-over-year change
Means of transportation
Value Percent YoY change
Car 2,782 80.6% 2.5%
Motorcycle 5 0.1% 0.0%
Bicycle 28 0.8% 27.3%
Walk 227 6.6% -10.6%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Lemhi County by zipcode?

Zipcode Population Number of households Median income Average income
83226 2,100 899 $36,458 $50,688
83235 1 0 $0 $0
83462 667 233 $0 $66,835
83463 66 42 $58,000 $52,669
83464 296 116 $40,625 $96,328
83465 104 47 $64,464 $214,753
83466 197 116 $0 $52,756
83467 6,590 2,801 $53,917 $72,156
83468 191 53 $85,250 $72,964
83469 25 14 $0 $0

Explore more communities

FAQs about Lemhi County demographics 

What is the total population of Lemhi County?

Lemhi County has a total population of 8,249 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +1.0% compared to a year ago.

What is the gender ratio in Lemhi County?

The gender ratio in Lemhi County is as follows:
  • 50.9% males (4,197 residents)
  • 49.1% females (4,052 residents)

What is the median age in Lemhi County?

The median age in Lemhi County is 53.3.

What is the age distribution of the population in Lemhi County?

The age distribution in Lemhi County is as follows:
  • Under 15: 13.8% (1,134 residents)
  • Ages 15-24: 11.8% (976 residents)
  • Ages 25-44: 17.3% (1,430 residents)
  • Ages 45-64: 26.2% (2,159 residents)
  • Over 65: 30.9% (2,550 residents)

What is the racial and ethnic makeup of Lemhi County?

The racial and ethnic makeup of Lemhi County is as follows:
  • White: 92.4% (7,624 residents)
  • Black or African American: 0.1% (8 residents)
  • American Indian and Alaska Native: 0.4% (34 residents)
  • Asian: 0.2% (13 residents)
  • Native Hawaiian and Other Pacific Islander: 0.1% (10 residents)
  • Two or More Races: 5.7% (470 residents)
  • Other: 1.1% (90 residents)

What percentage of the population in Lemhi County are U.S.-born citizens?

U.S.-born citizens represent 99% of the population in Lemhi County.

How many housing units are there in Lemhi County?

There are 4,676 housing units in Lemhi County, reflecting a +0.9% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Lemhi County and what is the average household size?

Lemhi County has a total of 3,458 households, with an average of 2 people in each.

What is the median household income in Lemhi County?

Lemhi County has a median household income of $53,202, representing a +2.2% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Lemhi County?

The employment rate is 98% in Lemhi County, with a workforce of 3,568 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 69.7% (2,486 residents)
  • Blue-collar workers: 30.3% (1,082 residents)

Places of employment:
  • Self-employed: 16% (572 residents)
  • Private companies: 59.1% (2,110 residents)
  • Governmental workers: 15.7% (560 residents)
  • Not-for-profit companies: 9.1% (326 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025