Off-grid site report

Wilkinson County, MS

31.2224, -91.2390 · 154 ft elevation

Read this before you act on anything below. This is my researched starting point for Wilkinson County, MS, 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 rulesWilkinson County, MS

Zoning & raw-land occupancy

Unclear - verifyI couldn't find an official countywide zoning ordinance for Wilkinson County. Zoning is verified and enforced at the municipal level by planning and zoning officials in Centreville, Woodville, or Crosby, so if your land is in one of those towns you'll need to check with that town's office. For unincorporated county land, no official zoning code was confirmed either way, so call the county government to ask directly. source

Dwellings, tiny homes & RVs

Unclear - verifyI found no Wilkinson County-specific rule on tiny homes, RVs, or mobile homes. Mississippi has no statewide law on this, so it comes down to whatever the county or the relevant town (Centreville, Woodville, Crosby) decides, and that wasn't confirmed in official sources. Ask the county government or the municipal office nearest your land before assuming you can live in an RV or tiny home full-time. source

Building permits & codes

Unclear - verifyI couldn't locate an official Wilkinson County building department page or code adoption ordinance. Mississippi doesn't mandate a statewide residential building code, so whether you need a permit likely depends on whether the county or your municipality (Woodville, Centreville, or Crosby) has adopted one, and that wasn't confirmed. Call the county or the relevant town office to find out what applies to your parcel. source

Septic & composting toilets

Generally allowedSeptic systems are permitted but tightly controlled by the Mississippi State Department of Health (MSDH), which runs the state's onsite wastewater program statewide, including Wilkinson County. You can't just dig your own system: a Licensed Professional Evaluator has to do the soil evaluation and a Licensed Installer has to build it, with applications going through MSDH. source

Greywater reuse

RestrictedI found no Wilkinson County-specific greywater rule, so this falls back to Mississippi's state baseline, which has no separate greywater reuse framework and generally treats greywater like other wastewater needing an approved disposal system. Practically, that means you should plan on routing greywater through an approved septic setup rather than assuming informal reuse is fine.

Rainwater harvesting

Generally allowedNo Wilkinson County ordinance restricts rainwater harvesting, and Mississippi's state baseline allows it statewide, including small-scale rain barrels and cisterns without a permit. This looks safe to do, but if you're planning something large-scale it's worth a courtesy call to the county to be sure nothing local has changed.

Private wells & water rights

Generally allowedPrivate domestic wells are permitted and fall under the state's rules rather than a Wilkinson County ordinance, meaning domestic wells are generally exempt from state withdrawal permits but must be drilled by a licensed contractor. The Wilkinson County Soil and Water Conservation District offers conservation help but isn't the permitting authority, so drilling questions should go to a licensed well driller or the state, not the SWCD.

Living disconnected from utilities

RestrictedI didn't find a Wilkinson County ordinance on full grid disconnection specifically, so this inherits Mississippi's state baseline: generating your own power off-grid (solar, etc.) is legal, but fully disconnecting from utility service can run into state-level utility rules or discouragement. Worth confirming your specific situation with the county before committing to going fully off the electric grid.

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average: 5.1 hrs/day
Worst month (sizes an off-grid array): 3.7 hrs/day
Yearly output per 1 kW of panels: 1,398 kWh

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Weather1991-2020

Precipitation: 65 in/yr
Snowfall: 0 in/yr
Heating degree days: 1,910 (mild)
Frost-free season: Mar 13 to Nov 20

How far help isstraight-line

Hospital Field Health System: 14.4 mi
Fire station: none within range
Hardware store Stine Home & Yard: 22.3 mi
Grocery Treppendahl Super Foods: 8.9 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 39633).

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.