About 56257 - Marietta, Minnesota
Located in Minnesota, the United States is home to the densely populated community of Marietta, served by ZIP code 56257. It sits within Marietta County County.
Census data puts the population of this ZIP code at 40,776 residents. That's noticeably above the average for a Minnesota ZIP code, which sits near 22,692 people.
Median household income is about $97,500 (above the Minnesota average).
Other ZIP code codes in Minnesota serve areas such as Minneapolis, Rockford, Kettle River.