Walnut Grove, MN is a city located in Redwood County, Minnesota and has a land area of 117.85 square miles (305.23 km2). The water area for the city is 0.22 square miles or 0.57 km2. There is one unique zip code in Walnut Grove, Minnesota and it is 56180. The area code(s) for Walnut Grove is 507.
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