ZIP Codes of Idaho County, ID

Population & People
Population & People
Total Population
14,315
Household Income
Household Income
Median Income
$66,228
Housing
Housing
Total Housing Units
7,326
Business & Economy
Business & Economy
Total Businesses
478
Employment
Employment
Employment Rate
47.18%
Education
Education
Bachelor's Degree+
21.28%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 13 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:13 ZIP Codes (11 Standard, 2 PO Box, 0 Unique) [See All]
Area Codes:208 / 986
Timezone:Pacific (GMT -08:00)
Local Time:11:53:15 PM
Population:14,315 [See All]
FIPS:16049
Land Area:6,589 sq mi
Water Area:17 sq mi
Coordinates:45.7756, -116.0635
Quick Link:
https://www.zip-codes.com/county/id-idaho.asp
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Idaho's largest county by area
Spans 6,589 sq mi — the largest of 46 counties.
Notable income spread
Median income ranges $39,128 to $128,750 across ZIPs — a 3.3× gap.
Wide geographic spread
ZIPs range from 3056.5 sq mi down to 33.74 — a 91× sprawl ratio.

Standout ZIPs in this County


Most Populous
Grangeville · 6,406 people
44.8% of county total
Highest Income
Greencreek · $128,750 median
1.9× county average
Largest Land Area
Kooskia · 3,056.5 sq mi
Spans the most ground
Fastest Growth
Cottonwood · 19.5% (10-yr)
2,252 → 2,692 residents
Most Educated
Grangeville · 30.1% bachelor's+
1,294 of 4,296 adults 25+

Things worth knowing about Idaho County


14,315 residents live across 13 ZIPs covering 6,589 sq mi, served by 13 distinct USPS-recognized cities.

Population moved from 13,831 to 14,315 from 2014 to 2024 — a +3.5% change. 4 ZIPs gained residents, 7 lost.

The county's wealthiest ZIP 83533 (Greencreek, $128,750 median) and poorest ZIP 83554 (White Bird, $39,128) are 28.4 miles apart — a 3.3× income gap across local geography.

Median home values vary 1.9× across this county — from $240,100 in 83552 (Stites) to $466,700 in 83547 (Pollock).

Density varies 88× across the county — from 0 people/sq mi in 83525 (Elk City) to 18 in 83530 (Grangeville).

Educational attainment ranges from 2.3% bachelor's+ in 83525 (Elk City) to 30.1% in 83530 (Grangeville) — the breadth of educational profiles across the area.

Within Idaho, this is the #22 most populous of 46 counties and ranks #29 for median household income .

Weighted by population, the typical household earns about $71,575 across the county — reflecting what a typical resident sees, not a simple ZIP average.

21.3% of adults age 25+ hold a bachelor's degree or higher (2,227 of 10,465 reporting).

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

Stories about Idaho County


Two counties in one

Median household income spans 3.3× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.

Wealthiest ZIP
Greencreek
Median income: $128,750
Population: 121
Bachelor's+: 14.3%
vs
Poorest ZIP (pop >= 500)
White Bird
Median income: $39,128
Population: 350
Bachelor's+: 29.1%
For every $1 of household income in 83554, the typical household in 83533 earns $3.29.

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
6,589
square miles
Avg density
2.2
people per sq mi
Population
14,315
across 13 ZIPs
Kooskia
3,056.5 sq mi
2,427 residents
Elk City
1,474.6 sq mi
296 residents
Riggins
618.2 sq mi
587 residents

All ZIP Codes in Idaho County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
83530GrangevilleStandard6,406$79,477363.711.3%
83522CottonwoodStandard2,692$79,688427.319.5%
83539KooskiaStandard2,427$57,8853,056.512.9%
83552StitesStandard806$56,172116.5-22.0%
83549RigginsStandard587$56,488618.2-24.5%
83554White BirdStandard350$39,128335.6-39.9%
83525Elk CityStandard296$44,8571,474.6-30.4%
83526FerdinandStandard242$70,35738.5-30.3%
83547PollockStandard241$49,47936.335.4%
83542LucileStandard14787.9-29.0%
83533GreencreekStandard121$128,75033.7-2.4%
83671WarrenPO Box0.0
83531FennPO Box0.0

Adjacent & Nearby Counties