ZIP code · Mankato · Minnesota · United States

ZIP code 56003 — Mankato

ZIP code 56003 serves Mankato, Minnesota.

Postal code
56003
Single source Value from one source, not cross-checked.
City
Mankato
County
Nicollet FIPS 27103
State
Minnesota
Country
United States
Coordinates
44.2172, -94.0942 — precision precise (locality)
View on OpenStreetMap
Population
15,319 (ZCTA, ACS 5-year)
Population density
348 / sq mi
Land area
44 sq mi (113.9 km²) (ZCTA, ACS 5-year)
Median household income
$80,587
Per-capita income
$50,188
Median age
38.6
Households
6,383
Housing units
6,543
Median home value
$260,800
Median gross rent
$920 / month
Congressional district
MN-1 (119th Congress)
USDA hardiness zone
5a (-20 to -15 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/Chicago (UTC−6 / UTC−5 DST)
Area code
507
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 82°F), coldest Jan (avg low 6°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F242941576979828074604329
Avg low °F6922344758625950372513
Precip in1.00.81.93.34.25.64.34.33.32.41.61.1

NOAA 1991–2020 climate normals from the nearest station: MANKATO (5.7 mi) · NOAA NCEI

Places in ZIP 56003

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page