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

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zipcodes.pro — STATE/MN/COUNTY/MARTIN

Martin County, MN ZIP codes

There are 11 ZIP codes in Martin County, MN, in 11 towns, from 56031 to 56181. The largest are 56031 (Fairmont), 56088 (Truman) and 56171 (Sherburn).

The county seat is Fairmont.

ZIP codes
11
Towns
11
County seat
Fairmont
County FIPS
27091
Population
19,780
Median household income
$59,507
Land area
712 sq mi
Metro area
Fairmont

Martin County ZIP codes by town

Fairmont (county seat)
56031

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.

Map of Martin County ZIP codes

5603156039560755608856121561275616056162561715617656181

The ZIP codes of Martin 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.

Martin County in numbers

About 19,780 people live in Martin County, in 8,839 households, the 49th most populous of Minnesota's 87 counties. The median household income is $59,507 a year, 33% below the Minnesota median of $89,062 (US: $80,734). The median owner-occupied home is valued at $163,500 (50% below the Minnesota median), and median gross rent is $761 a month. The median age is 43.9; 23.8% of adults 25 and over hold a bachelor's degree or higher (39.4% across Minnesota); the average commute takes 17 minutes.

Population19,780Martin19,780
Households8,839Martin8,839
Median age43.9Martin43.9Minnesota38.8US 38.9
Median household income$59,507Martin$59,507Minnesota$89,062US $80,734
Median home value$163,500Martin$163,500Minnesota$329,300US $332,700
Median gross rent$761Martin$761Minnesota$1,280US $1,413
Bachelor's degree or higher23.8%Martin23.8%Minnesota39.4%US 35.7%
Mean commute16.9 minMartin16.9 minMinnesota22.7 minUS 26.4 min
Population density28 / sq miMartin28 / 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 Martin County

Largest towns in Martin County
TownZIP codesPopulation
Fairmont 1 10,296
Truman 1 1,212
Sherburn 1 1,015
Welcome 1 978
Trimont 1 546
Ceylon 1 259
Granada 1 243
Northrop 1 240
Dunnell 1 177
Ormsby 1 136
Odin 1 126

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 Martin County.

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

Every ZIP code in Martin County, with figures

ZIP codes in Martin County
ZIP City Type Population Median income Median home
56031 Fairmont , MN Standard 11,665 $54,847 $179,300
56039 Granada , MN Standard 880 $84,342 $159,300
56075 Northrop , MN Standard 176 $73,750 $121,400
56088 Truman , MN Standard 2,071 $71,354 $153,300
56121 Ceylon , MN Standard 590 $49,042 $119,600
56127 Dunnell , MN Standard 474 $42,292 $115,600
56160 Odin , MN Standard 224 $66,667 $94,200
56162 Ormsby , MN Standard 313 $88,625 $97,200
56171 Sherburn , MN Standard 1,632 $72,554 $169,800
56176 Trimont , MN Standard 888 $59,125 $126,500
56181 Welcome , MN Standard 1,280 $55,750 $114,100

Cite this page

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

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