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Olmsted County, MN Right to Farm: Agricultural Zoning Protection (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

District
A-1 Agricultural Protection
Farm dwelling minimum
80 contiguous acres
Permitted feedlot cap
1,000 animal units
Applies only in
Eyota, Marion, Oronoco, Quincy townships
Second dwelling threshold
farm over 80 acres
Penalty
misdemeanor, per-day offense

Summary

Olmsted County's A-1 Agricultural Protection District, the county's primary farmland zone in the unincorporated area, limits development to protect long-term farming. One farm dwelling is allowed per farm of at least 80 acres, one non-farm home on a qualifying non-farm lot, and general farming is a permitted use, not a conditional one.

These county ordinances apply to unincorporated areas of Olmsted County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

The purpose of this district is to maintain, conserve and enhance agricultural land, and natural habitat for plant and animal life. This district is intended to encourage long term agricultural uses and preserve prime agricultural farmland by restricting the location and density of non-farm dwellings and other non-farm land uses. ... a) Farm: One farm dwelling may be located on a farm. The definition of a farm for this district is "a lot used for agricultural or horticultural uses and comprised of either at least eighty (80) acres or two (2) contiguous and undivided quarter quarter sections, including the abutting public road right-of-way, if any." ... A second farm dwelling or mobile home may be placed on the same farmstead as another when the ownership of such farm exceeds a size of eighty (80) acres of contiguous land and provided that the residents of both dwellings are owners, operators or employees of said farm.

Full Breakdown

" A-1 applies only in the unincorporated area the county zones directly: Eyota, Marion, Oronoco and Quincy townships (Ch. 04 limits the whole ordinance to land "outside the incorporated limits of municipalities"); other townships zone through the Township Cooperative Planning Association or their own ordinances, and cities such as Rochester and Stewartville run separate codes entirely. Within A-1, one farm dwelling is permitted on a farm defined as at least 80 contiguous acres (or two contiguous quarter-quarter sections); one non-farm dwelling is permitted on a qualifying non-farm lot; and a second farm dwelling or mobile home can go on the same farmstead once the farm exceeds 80 acres, provided residents of both homes are owners, operators or employees of the farm. 26). 02, which weighs traffic, drainage and prime farmland with a crop equivalent rating of 60 or above.

Violations & Fines

Violating any provision of the zoning ordinance, including building or expanding a use in the A-1 district without the required permit, is a misdemeanor under Ch. 1400 § 3.10: "Each day that violation is committed or permitted to exist shall constitute a separate offense." The County may also pursue civil remedies or after-the-fact permit orders, and a fine does not excuse bringing the use into compliance.

Frequently Asked Questions

Does this A-1 zoning apply to my township?
Only if you're in Eyota, Marion, Oronoco or Quincy Township, the four townships Olmsted County zones directly. Section 1.04 confines the zoning ordinance to unincorporated land outside city limits, and several other townships administer their own zoning through the Township Cooperative Planning Association rather than the county's A-1 district.
How many dwellings can I put on a farm?
One farm dwelling is allowed on any farm of at least 80 contiguous acres. A second farm dwelling or mobile home is allowed on the same farmstead only once the farm exceeds 80 acres, and only if residents of both homes are owners, operators or employees of that farm.
Can I run a feedlot in the A-1 district without a permit?
Yes, up to 1,000 animal units as a permitted use under Section 5.00(A)(4). A feedlot exceeding 1,000 animal units becomes a conditional use under Section 10.26 and needs Planning Advisory Commission approval, plus a neighborhood informational meeting in Eyota Township for feedlots of 500 or more animal units.
What happens if I violate the zoning ordinance?
Section 3.10 makes any violation a misdemeanor, with each day the violation continues counted as a separate offense. The county can also seek injunctions, order corrective measures, or require an after-the-fact permit, and paying a fine doesn't excuse bringing the property into compliance.

Sources & Official References

Other rules in Olmsted County

All Olmsted County rules

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