Marietta ZIP code, Minnesota
The ZIP code for Marietta, MN is 56257, and its area code is 320.
- USPS city name
- 1 ZIP code
- Population
- 166
- Area code
- 320
- County
- Lac qui Parle County
- State
- Minnesota
ZIP codes addressed as Marietta
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
56257 | Marietta , MN | Standard | 377 | $75,417 | $73,800 |
Map of Marietta ZIP codes
The ZIP codes of Marietta, MN, 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.
Towns near Marietta
The nearest larger towns are Madison (1,550 people, 11 mi), Gary, SD (246 people, 15 mi) and Milbank, SD (3,525 people, 18 mi).
| Town | Population | Distance |
|---|---|---|
| Milbank, SD | 3,525 | 17.8 mi |
More nearby: every ZIP code in Lac qui Parle County · Minnesota ZIP codes
Cite this page
zipcodes.pro. “Marietta, MN ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/mn/marietta
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