Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — STATE/MN/COUNTY/MAHNOMEN

Mahnomen County, MN ZIP codes

Mahnomen County, MN has 5 ZIP codes, in 5 towns: 56557, 56589, 56651, 56566 and 56516. 1 more crosses into it from a neighbouring county: 56542.

The county seat is Mahnomen.

ZIP codes
5
Partly in it
1 more
Towns
5
County seat
Mahnomen
County FIPS
27087
Population
5,358
Median household income
$59,441
Land area
558 sq mi

Mahnomen County ZIP codes by town

Mahnomen (county seat)
56557

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

ZIP codes partly in Mahnomen County

This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Mahnomen County.

Map of Mahnomen County ZIP codes

The ZIP codes of Mahnomen County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Mahnomen County in numbers

About 5,358 people live in Mahnomen County, in 1,885 households, the 82nd most populous of Minnesota's 87 counties. The median household income is $59,441 a year, 33% below the Minnesota median of $89,062 (US: $80,734). The median owner-occupied home is valued at $161,900 (51% below the Minnesota median), and median gross rent is $696 a month. The median age is 35.4; 16.2% of adults 25 and over hold a bachelor's degree or higher (39.4% across Minnesota); the average commute takes 20 minutes.

Population5,358Mahnomen5,358
Households1,885Mahnomen1,885
Median age35.4Mahnomen35.4Minnesota38.8US 38.9
Median household income$59,441Mahnomen$59,441Minnesota$89,062US $80,734
Median home value$161,900Mahnomen$161,900Minnesota$329,300US $332,700
Median gross rent$696Mahnomen$696Minnesota$1,280US $1,413
Bachelor's degree or higher16.2%Mahnomen16.2%Minnesota39.4%US 35.7%
Mean commute20.4 minMahnomen20.4 minMinnesota22.7 minUS 26.4 min
Population density10 / sq miMahnomen10 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Mahnomen County

Largest towns in Mahnomen County
TownZIP codesPopulation
Mahnomen 1 1,049
Naytahwaush 1 478
Waubun 1 419
Bejou 1 109
Lengby 1 43

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Mahnomen County.

Not sure you are in Mahnomen County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Mahnomen County, with figures

ZIP codes in Mahnomen County
ZIP City Type Population Median income Median home
56516 Bejou , MN Standard 352 $69,250 $183,300
56557 Mahnomen , MN Standard 2,758 $57,731 $143,800
56566 Naytahwaush , MN Standard 613 $44,583 $118,300
56589 Waubun , MN Standard 1,760 $72,969 $200,000
56651 Lengby , MN Standard 667 $80,750 $190,800

Cite this page

zipcodes.pro. “Mahnomen County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/mn/county/mahnomen

Underlying data is public domain or openly licensed — sources, vintages and licences.