Residential delivery area · Minnesota
ZIP Code 56003: Mankato, MN
ZIP code 56003 uses the postal name Mankato, Minnesota and lies entirely in Nicollet County (Census 2020 ZIP-county file). About 15,000 people live there (Census Bureau, ACS 2020-2024), the less populous of Mankato's 2 residential ZIP codes. Median household income is $82,538 (Census Bureau, ACS 2020-2024). By Census place, 14% of its land lies in North Mankato, and under 1% in smaller places; 85% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Mankato · 2 residential ZIPs
- County
- Nicollet County
- Census places
- North Mankato
- Metro area
- Mankato, MN
- House district
- MN-1 119th Congress
- State
- Minnesota
- Time zone
- Central
- Land area
- 44.0 sq mi · 347 people per sq mi
- PO Box ZIPs
- 56002 also use the name Mankato
Where is ZIP code 56003?
56003 centers on 44.219°, -94.090° and covers 44.0 square miles of land plus 0.4 of water. It borders 5 ZIP codes: 56050, 56001, 56074, 56055, 56082.
The map draws ZIP code areas only. For the streets inside 56003, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 56003 compare with the rest of Mankato?
| Measure | 56003 | In Mankato | In Nicollet County | In MN |
|---|---|---|---|---|
| People (ACS 2020-2024) | 15,258 | 2nd of 2 | 2nd of 10 | 131st of 881 |
| Median household income | $83k | 1st of 2 | 4th of 9 | 264th of 545 |
| Median home value | $270k | 2nd of 2 | 5th of 9 | 292nd of 558 |
Its median household income is higher than in 65% of U.S. residential ZIP codes, and it is denser than 68% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 56003?
The 2020 Census counted 15,221 people in 56003; the ACS, which samples households over 2020-2024, estimates 15,258. Between the 2010 and 2020 censuses its population grew 6.2% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 15,258
- 2020 Census count
- 15,221+6.2% since 2010 (14,335)
- Households
- 6,349
- Median age
- 38.8
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 56003?
Of the 15,258 people the ACS estimates in 56003, 24.4% are under 18 and 17.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (85.8%).
- Under 1824.4%
- 18 to 6458.4%
- 65 and older17.3%
- White, not Hispanic85.8%
- Hispanic or Latino4.9%
- Black, not Hispanic4.2%
- Other or two or more2.7%
- Asian, not Hispanic2.4%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 56003 earn?
Median household income is $82,538 (ACS 2020-2024), the 4th highest of the 9 ranked ZIP codes in Nicollet County. It is not measurably different from 2015-2019 ($86,190 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $82,538
- Income per person
- $52,651
- Below the poverty line
- 4.4%
- Unemployed (of the labor force)
- 2.6%
- Adults 25+ with a bachelor's degree
- 40.9%
- Adjusted gross income per tax return, 2022
- $84,1447,940 returns; wages 70% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 56003?
FHFA's house price index for 56003, built from repeat sales and appraisals of the same homes, rose 62% from 2015 to 2025 and rose 37% from 2020 to 2025, and moved +1.8% in 2025.
- Median home value (owners' estimate)
- $270,400
- Median gross rent
- $975
- Homes owned by their occupants
- 71.3%
- Housing units
- 6,555
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 56003?
312 business establishments had a location in this ZIP code in 2023, 11 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance42
- Other services (except public administration)34
- Construction30
- Retail trade28
- Accommodation and food services25
- Manufacturing21
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 56003?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 56050 | Kasota | 1,306 | $90k | 7.6 mi |
| 56001 | Mankato | 51,585 | $70k | 8.4 mi |
| 56074 | Nicollet | 1,845 | $93k | 9.1 mi |
| 56055 | Lake Crystal | 3,898 | $91k | 9.5 mi |
| 56082 | Saint Peter | 14,606 | $72k | 9.9 mi |
| 56021 | Courtland | 1,108 | $97k | 12.2 mi (near) |
| 56063 | Madison Lake | 3,221 | $102k | 13.4 mi (near) |
| 56024 | Eagle Lake | 3,647 | $95k | 13.5 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.