Minn. Stat. § 481.17: COUNTY, CITY, AND SCHOOL DISTRICT ATTORNEYS.

In all counties in this state having a population of not more than 12,000, the offices of county attorney, city attorney, and school district attorney shall not be deemed incompatible and may be held by the same person. For the purposes of prosecution of violations of state laws, municipal ordinances, charter provisions, or municipal regulations, the offices of county attorney and city attorney shall not be deemed incompatible and may be held by the same person, regardless of the population of the county.