ZIP Codes of Keweenaw County, MI

Population & People
Population & People
Total Population
1,807
Household Income
Household Income
Median Income
$52,974
Housing
Housing
Total Housing Units
1,955
Business & Economy
Business & Economy
Total Businesses
59
Employment
Employment
Employment Rate
43.74%
Education
Education
Bachelor's Degree+
40.96%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 4 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:4 ZIP Codes (2 Standard, 2 PO Box, 0 Unique) [See All]
Area Code:906
Timezone:Eastern (GMT -05:00)
Local Time:2:12:32 PM
Population:1,807 [See All]
FIPS:26083
CBSA:Houghton, MI
Land Area:282 sq mi
Water Area:16 sq mi
Coordinates:47.3582, -88.2034
Quick Link:
https://www.zip-codes.com/county/mi-keweenaw.asp
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Owner-dominated county
Just 9.0% of homes are rentals — strong homeownership culture.

Standout ZIPs in this County


Most Populous
Mohawk · 1,062 people
58.8% of county total
Highest Income
Copper Harbor · $67,188 median
1.3× county average
Largest Land Area
Mohawk · 238.4 sq mi
Spans the most ground
Fastest Growth
Mohawk · -22.9% (10-yr)
1,377 → 1,062 residents
Most Educated
— no education data

Things worth knowing about Keweenaw County


1,807 residents live across 4 ZIPs covering 282 sq mi, served by 4 distinct USPS-recognized cities.

Population moved from 1,985 to 1,807 from 2014 to 2024 — a -9.0% change. 2 ZIPs gained residents, 2 lost.

The county's wealthiest ZIP 49918 (Copper Harbor, $67,188 median) and poorest ZIP 49805 (Allouez, $43,819) are 24.8 miles apart — a 1.5× income gap across local geography.

Median home values vary 3.2× across this county — from $85,000 in 49901 (Ahmeek) to $268,800 in 49918 (Copper Harbor).

Density varies 58× across the county — from 4 people/sq mi in 49950 (Mohawk) to 260 in 49901 (Ahmeek).

Educational attainment ranges from 19.8% bachelor's+ in 49901 (Ahmeek) to 71.8% in 49918 (Copper Harbor) — the breadth of educational profiles across the area.

Within Michigan, this is the #83 most populous of 83 counties and ranks #75 for median household income .

Weighted by population, the typical household earns about $51,928 across the county — reflecting what a typical resident sees, not a simple ZIP average.

41.0% of adults age 25+ hold a bachelor's degree or higher (614 of 1,499 reporting).

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

Stories about Keweenaw County


Population decline

Keweenaw County lost 9.0% of residents between 2014 and 2024. ZIPs that shed the largest share:

Mohawk
-22.9%
1,377 → 1,062 residents

All ZIP Codes in Keweenaw County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
49950MohawkStandard1,062$53,250238.4-22.9%
49805AllouezStandard365$43,81933.164.4%
49901AhmeekPO Box217$47,6390.8-23.0%
49918Copper HarborPO Box163$67,1889.656.7%

Adjacent & Nearby Counties