Plain

County ZIP codes · Idaho · FIPS 16059

Lemhi County, ID ZIP Codes

Lemhi County, Idaho has 12 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 11 residential and 1 for PO boxes or a single organization. 9 of the residential ones lie mainly in Lemhi County and 2 mainly in a neighboring county; 4 cross the county line.

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Lemhi County?

83226 · Challis: $37k83235 · Ellis: –83253 · May: –83462 · Carmen: –83463 · Gibbonsville: $58k83464 · Leadore: $41k83465 · Lemhi: $65k83466 · North Fork: –83467 · Salmon: $54k83468 · Tendoy: $85k83469 · Shoup: –8322683464834698346783253834668346583463834688346283226 · Challis: $37k83235 · Ellis: –83253 · May: –83462 · Carmen: –83463 · Gibbonsville: $58k83464 · Leadore: $41k83465 · Lemhi: $65k83466 · North Fork: –83467 · Salmon: $54k83468 · Tendoy: $85k83469 · Shoup: –83226834648346983467834668346583463834688346283226 · Challis: $37k83235 · Ellis: –83253 · May: –83462 · Carmen: –83463 · Gibbonsville: $58k83464 · Leadore: $41k83465 · Lemhi: $65k83466 · North Fork: –83467 · Salmon: $54k83468 · Tendoy: $85k83469 · Shoup: –8322683464834698346783466834658346383468
The residential ZIP codes of Lemhi County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

All 11 residential ZIP codes in Lemhi County

9 ZIP codes lie mainly in Lemhi County; 2 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Lemhi County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
83467 Salmon 6,590 8 $54k $317k 100%
83462 Carmen 667 6 – $456k 100%
83464 Leadore 296 0 $41k $216k 89%
83466 North Fork 197 1 – $520k 100%
83468 Tendoy 191 1 $85k $364k 100%
83253 May 112 0 – – 72%
83465 Lemhi 104 1 $65k $425k 100%
83463 Gibbonsville 66 0 $58k $328k 100%
83469 Shoup 25 0 – – 100%

Partly in Lemhi County

Residential ZIP codes mainly in another county that reach at least 1% into Lemhi County, by their share here
In this county
83226 Challis 2,100 1 $37k $359k 13%
83235 Ellis 1 0 – – 6%

Download the 12 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

4 ZIP codes of Lemhi County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Lemhi County and in the neighboring counties
ZIPIn LemhiElsewhere
8322613%Custer County 87%
8346489%Clark County 11%
8325372%Custer County 28%
832356%Custer County 94%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

PO Box and single-organization ZIP codes

ZIP codes in Lemhi County without a residential area (GeoNames postal codes)
ZIPPostal name
83229Cobalt

Source: GeoNames postal codes (CC BY 4.0).

Which first three digits do Lemhi County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Lemhi County's ZIP codes use 2 prefixes: 832 and 834.

Three-digit prefixes of Lemhi County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Lemhi County's
PrefixSectional centerHereAll codes
832 Pocatello, ID (SCF 832) 4 57
834 Pocatello, ID (SCF 832) 8 46

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.