ZIP codes

ZIP codes in Kootenai County, Idaho

Kootenai County has 13 ZIP codes. 8 lie entirely inside it and 5 are shared with neighboring counties, so part of their land and their people are elsewhere. About 182,050 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes: 13; With 1% or more of their land inside
Entirely inside: 8; 99% or more of their land
Shared with other counties: 5; Most with Bonner County (3)
Most populated ZIP: 83854; 54,851 people · Post Falls
Least populated ZIP: 83842; 141 people
Largest ZIP by land: 83814; 194 sq mi · Coeur d'Alene

Map of the ZIP codes in Kootenai County

Entirely in the county (99% or more of its land)
Shared, mostly in this county
Shared, mostly in other counties
Neighboring counties

Open in the interactive tool

Each area is a ZIP code with its number where it fits. Hover over one to see its name.

All ZIP codes in Kootenai County

13 ZIP codes in Kootenai County, ID, by number
ZIP code	Main city	Population	Land in the county	Residents in the county
83801	Athol	7,553	65%	≈ 6,137
83803	—	650	6.6%	≈ 147
83810	—	1,412	98%	≈ 1,398
83814	Coeur d'Alene	26,059	100%	26,059
83815	Coeur d'Alene	41,405	100%	41,405
83833	Harrison	1,365	99.8%	≈ 1,363
83835	Hayden	24,238	100%	24,238
83842	—	141	100%	141
83854	Post Falls	54,851	100%	54,851
83858	Rathdrum	20,137	100%	20,137
83861	St. Maries	7,275	4.7%	≈ 421
83869	Spirit Lake	5,504	57%	≈ 4,190
83876	Conkling Park	1,563	100%	1,563

ZIP codes shared with other counties

These 5 ZIP codes have part of their land in another county. The first figure is the share of their land in Kootenai County; then, where the rest lies.

83801 (Athol): 65% here; 35% in Bonner County.
83803: 6.6% here; 93% in Bonner County.
83810: 98% here; 2.5% in Shoshone County.
83861 (St. Maries): 4.7% here; 89% in Benewah County and 6.1% in Shoshone County.
83869 (Spirit Lake): 57% here; 43% in Bonner County.

Cities and prefixes

By main city (the city, town or CDP each ZIP shares the most land with), the ones with the most are Coeur d'Alene (2), Athol (1), Conkling Park (1), Harrison (1), Hayden (1), and Post Falls (1); 9 places in all.

All 13 start with the same three digits, 838: the prefix of the USPS sorting center that handles them.

Neighboring counties

Each one with its ZIP codes. Those without a page of their own open in the tool.

Tools for this county

ZIP codes by county or city The same ZIP codes on an interactive map, with the list as CSV or to copy County map with cities Its cities, towns and CDPs with their population ZIP codes in a radius The ZIP codes within 10 miles of its center, or any distance you like

Sources

U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.

How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.

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