Carlton County, Minnesota
Barnum is a city in Carlton County, Minnesota. Barnum adopts its own zoning, so inside its limits Barnum’s rules apply, not the county’s. Septic permits inside Barnum come from Carlton County (Carlton County Zoning and Environmental Services · 218-384-9176). 8 rules below are quoted from official sources and independently re-checked, most recently on November 8, 2026. Rules for unincorporated land are on the Carlton County page.
Land inside Barnum city limits.
“the city shall be divided into zoning districts”
Zoning districts inside Barnum city limits.
districts: R-1 Single-Family Residence; R-2 Multiple-Family Residence; C-1 Downtown Business; C-2 Highway Oriented Commercial; I Industrial Manufacturing; O Open Space; P Public Zone
“The districts shall be known as: (1) R-1 Single-Family Residence District; (2) R-2 Multiple-Family Residence District; (3) C-1 Downtown Business District; (4) C-2 Highway Oriented Commercial District; (5) I Industrial Manufacturing District; (6) O Open Space District; and (7) P Public Zone District.”
Subsurface sewage treatment systems inside Barnum city limits, administered county-wide by Carlton County.
“administers Carlton County Ordinance #30 Subsurface Sewage Treatment Systems county-wide.”
Installation, replacement, alteration, repair, or extension of a subsurface sewage treatment system inside Barnum city limits under Carlton County's county-wide program.
“A permit shall be obtained whenever any subsurface sewage system is installed”
Subsurface sewage treatment systems inside Barnum city limits that are in shoreland areas.
“Compliance inspections are required for subsurface sewage treatment systems at point-of-sale or permit application in shoreland areas.”
All subdivisions of land inside Barnum city limits.
“These regulations shall be applicable to all subdivisions of land within the city.”
City zoning-permit process for listed work inside Barnum city limits.
“if you have a question if you need a permit, please call City Hall.”
Barnum does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Dwellings in Barnum R-1 Single-Family Residence District.
minimum floor area, 3 or more bedrooms: 1000 square feet · minimum floor area, 2 bedrooms: 900 square feet · minimum floor area, 1 bedroom: 700 square feet
“3 or More Bedrooms 2 Bedrooms 1 Bedroom 1,000 Square Feet 900 Square Feet 700 Square Feet”
We looked and could not find an official answer yet. Silence is not permission; ask Barnum or Carlton County directly.
Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.
Unanswered questions are usually a sign that Barnum publishes no rule on the point, not that none exists. Carlton County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Barnum means bringing your own water and power. The kit we’d start with:
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