Off-grid site report

Oregon County, MO

36.5037, -91.5224 · 607 ft elevation

Read this before you act on anything below. This is my researched starting point for Oregon County, MO, not legal advice and not a guarantee. Rules change, and the deciding facts on any specific parcel (setbacks, perc results, overlay districts, deed restrictions, road frontage) live at the county or town office, not in any database. Before you buy land or build, confirm the current rules directly with the local zoning and health offices - the sources on this page tell you exactly who to call.

The local rulesOregon County, MO

Zoning & raw-land occupancy

Unclear - verifyNo official Oregon County zoning ordinance or planning department page was found. Missouri law (Chapter 64 RSMo) requires a countywide vote before a county like Oregon adopts zoning, and it's not confirmed whether Oregon County has done so; incorporated towns (Alton, Thayer, Koshkonong) may have their own zoning. source

Dwellings, tiny homes & RVs

Unclear - verifyNo county ordinance on dwelling size, tiny homes, or RV residency was found. This likely falls under the same zoning uncertainty; check with the county commission and relevant town.

Building permits & codes

Unclear - verifyMissouri has no mandatory statewide building code, and counties opt in individually. No Oregon County building department or permit page was found to confirm whether permits are required outside city limits. source

Septic & composting toilets

RestrictedOnsite wastewater systems are regulated under Missouri DHSS rules (RSMo 701.025-701.059, 19 CSR 20-3.060/3.070/3.080), with the Oregon County Health Department the likely local permitting contact, though this wasn't confirmed on a county-branded page. source

Greywater reuse

Unclear - verifyNo Missouri state statute or Oregon County ordinance specific to greywater reuse was found. Check with the county health department before installing a system.

Rainwater harvesting

Generally allowedMissouri state law protects a landowner's right to collect and use rainwater, and no Oregon County restriction was found on top of that.

Private wells & water rights

RestrictedWell construction and repair statewide, including in Oregon County, is governed by Missouri DNR's Well Construction Rules (10 CSR 23); no separate county well ordinance was found. source

Living disconnected from utilities

Generally allowedMissouri law protects a landowner's right to rely on a private water system rather than a public utility, and no Oregon County ordinance requiring utility hookup was found.

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average: 5.0 hrs/day
Worst month (sizes an off-grid array): 3.6 hrs/day
Yearly output per 1 kW of panels: 1,365 kWh

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Weather1991-2020

Precipitation: 47 in/yr
Snowfall: 2 in/yr
Heating degree days: 4,371 (moderate)
Frost-free season: Apr 16 to Oct 17

How far help isstraight-line

Hospital Fulton County Hospital: 18.1 mi
Fire station Mammoth Springs Volunteer Fire Station: 1.1 mi
Hardware store Simpsons: 15.1 mi
Grocery SPRING RIVER DISPENSARY: 11.6 mi

From OpenStreetMap. Road miles will be longer, often much longer in hill country.

Plan this spot

These open with this location's real numbers already filled in (ZIP 65791).

Size a solar system Heat loss & insulation Firewood per winter Rainwater harvest Garden size Panel tilt

Sources: US Census Bureau geocoder; NLR PVWatts v8 (solar); NOAA NCEI 1991-2020 climate normals (nearest station) or Open-Meteo (ZIP-centroid) for weather; Open-Elevation; OpenStreetMap contributors. Public data retrieved Aug 22, 2026; agencies update their layers on their own schedules. Planning data, not a survey or legal advice.