ZIP Codes of Lemhi County, ID

Population & People
Population & People
Total Population
8,248
Household Income
Household Income
Median Income
$60,451
Housing
Housing
Total Housing Units
4,721
Business & Economy
Business & Economy
Total Businesses
306
Employment
Employment
Employment Rate
51.13%
Education
Education
Bachelor's Degree+
24.08%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 10 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:10 ZIP Codes (8 Standard, 2 PO Box, 0 Unique) [See All]
Area Codes:208 / 986
Timezone:Mountain (GMT -07:00)
Local Time:2:11:57 PM
Population:8,248 [See All]
FIPS:16059
Land Area:4,921 sq mi
Water Area:5 sq mi
Coordinates:45.0228, -113.8347
Quick Link:
https://www.zip-codes.com/county/id-lemhi.asp
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Idaho's shortest commutes
16-minute avg commute — the shortest in the state.
Among Idaho's 5 oldest counties
Median age 51.4.
Striking education divide
Bachelor's share spans 7.6% to 41.2% — a 34-point gap.

Standout ZIPs in this County


Most Populous
Salmon · 6,590 people
79.9% of county total
Highest Income
Tendoy · $85,250 median
1.4× county average
Largest Land Area
Leadore · 1,267.1 sq mi
Spans the most ground
Fastest Growth
Salmon · 9.1% (10-yr)
6,043 → 6,590 residents
Most Educated
Salmon · 24.5% bachelor's+
1,208 of 4,927 adults 25+

Things worth knowing about Lemhi County


8,248 residents live across 10 ZIPs covering 4,921 sq mi, served by 10 distinct USPS-recognized cities.

Population moved from 7,852 to 8,248 from 2014 to 2024 — a +5.0% change. 3 ZIPs gained residents, 5 lost (and 1 held flat).

The county's wealthiest ZIP 83468 (Tendoy, $85,250 median) and poorest ZIP 83464 (Leadore, $40,625) are 37.6 miles apart — a 2.1× income gap across local geography.

Median home values vary 2.4× across this county — from $216,200 in 83464 (Leadore) to $520,000 in 83466 (North Fork).

Density varies 473× across the county — from 0 people/sq mi in 83253 (May) to 58 in 83468 (Tendoy).

Educational attainment ranges from 7.6% bachelor's+ in 83463 (Gibbsonville) to 41.2% in 83253 (May) — the breadth of educational profiles across the area.

Within Idaho, this is the #32 most populous of 46 counties and ranks #42 for median household income with the #39 fastest decade growth .

Weighted by population, the typical household earns about $54,388 across the county — reflecting what a typical resident sees, not a simple ZIP average.

24.1% of adults age 25+ hold a bachelor's degree or higher (1,478 of 6,139 reporting).

8 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Lemhi County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
4,921
square miles
Avg density
1.7
people per sq mi
Population
8,248
across 10 ZIPs
Leadore
1,267.1 sq mi
296 residents
Shoup
1,183.8 sq mi
25 residents
May
916.9 sq mi
112 residents

Single-ZIP anchor

One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.

Salmon

All ZIP Codes in Lemhi County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
83467SalmonStandard6,590$53,917849.19.1%
83462CarmenStandard66796.615.0%
83464LeadoreStandard296$40,6251,267.1-34.2%
83466North ForkStandard197372.9-18.6%
83468TendoyPO Box191$85,2503.337.4%
83253MayStandard112916.90.0%
83465LemhiPO Box104$64,46492.0-9.6%
83463GibbsonvilleStandard66$58,000138.9-50.0%
83469ShoupStandard251,183.8-35.9%
83229CobaltStandard0.0

Adjacent & Nearby Counties