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/NICOLLET

Nicollet County, MN ZIP codes

Nicollet County, MN has 5 ZIP codes, in 5 towns: 56003, 56082, 56074, 56021 and 56054. 1 more crosses into it from a neighbouring county: 56073.

The county seat is St. Peter.

ZIP codes
5
Partly in it
1 more
Towns
5
County seat
St. Peter
County FIPS
27103
Population
34,411
Median household income
$79,756
Land area
449 sq mi
Area code
507
Metro area
Mankato

Nicollet County ZIP codes by town

St. Peter (county seat)
56082

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 Nicollet County

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

Map of Nicollet County ZIP codes

5600356021560545607456082

The ZIP codes of Nicollet 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.

Nicollet County in numbers

About 34,411 people live in Nicollet County, in 13,002 households, the 32nd most populous of Minnesota's 87 counties. The median household income is $79,756 a year, 10% below the Minnesota median of $89,062 (US: $80,734). The median owner-occupied home is valued at $270,300 (18% below the Minnesota median), and median gross rent is $970 a month. The median age is 38.3; 36.1% of adults 25 and over hold a bachelor's degree or higher (39.4% across Minnesota); the average commute takes 16 minutes.

Population34,411Nicollet34,411
Households13,002Nicollet13,002
Median age38.3Nicollet38.3Minnesota38.8US 38.9
Median household income$79,756Nicollet$79,756Minnesota$89,062US $80,734
Median home value$270,300Nicollet$270,300Minnesota$329,300US $332,700
Median gross rent$970Nicollet$970Minnesota$1,280US $1,413
Bachelor's degree or higher36.1%Nicollet36.1%Minnesota39.4%US 35.7%
Mean commute16.4 minNicollet16.4 minMinnesota22.7 minUS 26.4 min
Population density77 / sq miNicollet77 / 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 Nicollet County

Largest towns in Nicollet County
TownZIP codesPopulation
Mankato 1 45,473
St. Peter 1 12,185
Nicollet 1 957
Courtland 1 770
Lafayette 1 484

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 Nicollet County.

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

Every ZIP code in Nicollet County, with figures

ZIP codes in Nicollet County
ZIP City Type Population Median income Median home
56003 Mankato , MN Standard 15,258 $82,538 $270,400
56021 Courtland , MN Standard 1,108 $96,563 $276,800
56054 Lafayette , MN Standard 853 $93,214 $198,200
56074 Nicollet , MN Standard 1,845 $92,813 $293,700
56082 Saint Peter , MN Standard 14,606 $71,456 $275,200

Cite this page

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

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