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County ZIP codes · Minnesota · FIPS 27091

Martin County, MN ZIP Codes

Martin County, Minnesota has 15 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 11 of the residential ones lie mainly in Martin County and 4 mainly in a neighboring county; 8 cross the county line. Median household income ranges from $54,847 in 56031 (Fairmont) to $72,554 in 56171 (Sherburn) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Martin County?

56013 · Blue Earth: $72k56027 · Elmore: $50k56031 · Fairmont: $55k56039 · Granada: $84k56075 · Northrop: $74k56088 · Truman: $71k56098 · Winnebago: $69k56111 · Alpha: $98k56121 · Ceylon: $49k56127 · Dunnell: $42k56160 · Odin: $67k56162 · Ormsby: $89k56171 · Sherburn: $73k56176 · Trimont: $59k56181 · Welcome: $56k560135603156039560885609856027561715611156176561815612756121561605616256013 · Blue Earth: $72k56027 · Elmore: $50k56031 · Fairmont: $55k56039 · Granada: $84k56075 · Northrop: $74k56088 · Truman: $71k56098 · Winnebago: $69k56111 · Alpha: $98k56121 · Ceylon: $49k56127 · Dunnell: $42k56160 · Odin: $67k56162 · Ormsby: $89k56171 · Sherburn: $73k56176 · Trimont: $59k56181 · Welcome: $56k560135603156039560885609856027561715611156176561815612756121561605616256013 · Blue Earth: $72k56027 · Elmore: $50k56031 · Fairmont: $55k56039 · Granada: $84k56075 · Northrop: $74k56088 · Truman: $71k56098 · Winnebago: $69k56111 · Alpha: $98k56121 · Ceylon: $49k56127 · Dunnell: $42k56160 · Odin: $67k56162 · Ormsby: $89k56171 · Sherburn: $73k56176 · Trimont: $59k56181 · Welcome: $56k560135603156039560885609856027561715617656127561215616056162
The residential ZIP codes of Martin County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $55,750 and $71,354.

They carry 15 postal town names.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 15 residential ZIP codes in Martin County

11 ZIP codes lie mainly in Martin County; 4 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Martin County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
56031 Fairmont 11,665 75 $55k $179k 100%
56088 Truman 2,071 17 $71k $153k 68%
56171 Sherburn 1,632 18 $73k $170k 100%
56181 Welcome 1,280 21 $56k $114k 100%
56176 Trimont 888 14 $59k $127k 100%
56039 Granada 880 10 $84k $159k 98%
56121 Ceylon 590 16 $49k $120k 100%
56127 Dunnell 474 9 $42k $116k 100%
56162 Ormsby 313 14 $89k $97k 64%
56160 Odin 224 11 $67k $94k 50%
56075 Northrop 176 3,321 $74k $121k 100%

Partly in Martin County

Residential ZIP codes mainly in another county that reach at least 1% into Martin County, by their share here
In this county
56098 Winnebago 1,970 17 $69k $148k 20%
56013 Blue Earth 4,535 27 $72k $177k 10%
56027 Elmore 692 11 $50k $58k 10%
56111 Alpha 356 7 $98k $105k 6%

Download the 15 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

8 ZIP codes of Martin County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Martin County and in the neighboring counties
ZIPIn MartinElsewhere
5601310%Faribault County 90%
5608868%Watonwan County 24%; Blue Earth County 8%
5609820%Faribault County 80%
5603998%Faribault County 2%
5602710%Faribault County 77%; Kossuth County 13%
561116%Jackson County 94%
5616264%Watonwan County 36%
5616050%Jackson County 30%; Watonwan County 20%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Martin County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Martin County's ZIP codes use 2 prefixes: 560 and 561.

Three-digit prefixes of Martin County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Martin County's
PrefixSectional centerHereAll codes
560 Mankato, MN (SCF 560) 7 74
561 Mankato, MN (SCF 560) 8 66

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.