House mouse records in Minnesota follow human development, from the Mississippi National River and Recreation Area through the Twin Cities to Minneopa and Blue Mounds state parks farther south and west, sites where buildings and farmsteads sit inside otherwise natural land. NatureServe flags the species as exotic, not part of Minnesota’s native fauna.
Reports peak from August through October, months when mice commonly move indoors as outdoor food and cover decline heading into fall. With 207 GBIF records against 79 from iNaturalist, much of the documentation likely comes from pest-trapping data rather than casual sightings of an animal most people encounter indoors.
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