| ZIP Codes: | 12 ZIP Codes (10 Standard, 2 PO Box, 0 Unique) [See All] |
| Area Codes: | 507 / 924 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:12:35 PM |
| Population: | 69,762 [See All] |
| FIPS: | 27013 |
| CBSA: | Mankato, MN |
| Land Area: | 677 sq mi |
| Water Area: | 18 sq mi |
| Coordinates: | 44.0597, -93.9968 |
| Quick Link: |
69,762 residents live across 12 ZIPs covering 677 sq mi, served by 11 distinct USPS-recognized cities.
Population moved from 64,556 to 69,762 from 2014 to 2024 — a +8.1% change. 5 ZIPs gained residents, 6 lost.
The county's wealthiest ZIP 56080 (Saint Clair, $105,398 median) and poorest ZIP 56001 (Mankato, $69,531) are 7.6 miles apart — a 1.5× income gap across local geography.
Median home values vary 2.5× across this county — from $167,900 in 56010 (Amboy) to $416,300 in 56063 (Madison Lake).
Density varies 265× across the county — from 12 people/sq mi in 56034 (Garden City) to 3,243 in 56080 (Saint Clair).
Educational attainment ranges from 19.1% bachelor's+ in 56090 (Vernon Center) to 40.4% in 56063 (Madison Lake) — the breadth of educational profiles across the area.
Within Minnesota, this is the #15 most populous of 93 counties and ranks #16 for median household income with the #15 fastest decade growth .
Weighted by population, the typical household earns about $75,498 across the county — reflecting what a typical resident sees, not a simple ZIP average.
34.4% of adults age 25+ hold a bachelor's degree or higher (14,045 of 40,879 reporting).
10 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 56001 | Mankato | Standard | 51,585 | $69,531 | 115.5 | 9.7% |
| 56055 | Lake Crystal | Standard | 3,898 | $90,987 | 119.8 | -0.5% |
| 56024 | Eagle Lake | Standard | 3,647 | $95,357 | 18.4 | 25.8% |
| 56063 | Madison Lake | Standard | 3,221 | $102,391 | 50.0 | 15.8% |
| 56065 | Mapleton | Standard | 2,766 | $92,933 | 120.0 | 1.1% |
| 56037 | Good Thunder | Standard | 1,374 | $78,750 | 76.8 | -6.5% |
| 56010 | Amboy | Standard | 1,159 | $80,156 | 80.5 | 1.8% |
| 56080 | Saint Clair | PO Box | 672 | $105,398 | 0.2 | -3.6% |
| 56090 | Vernon Center | Standard | 596 | $73,750 | 39.2 | -16.5% |
| 56078 | Pemberton | Standard | 451 | $80,208 | 25.1 | -14.4% |
| 56034 | Garden City | Standard | 393 | $98,750 | 32.1 | -38.3% |
| 56002 | Mankato | PO Box | — | — | 0.0 | — |