Off-grid site report
Massac County, IL
37.1437, -88.7187 · 345 ft elevationRead this before you act on anything below. This is my researched starting point for Massac County, IL, 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 rulesMassac County, IL
Zoning & raw-land occupancy
Unclear - verifyNo Massac County zoning ordinance or zoning department page was found on the county's official site. County commissioners have general authority over land use, but whether a zoning code exists or applies to unincorporated land is not confirmed; ask the County Clerk's office. source
Dwellings, tiny homes & RVs
Unclear - verifyNo county or municipal rule on minimum dwelling size, tiny homes, or RV residency was found. Not confirmed, likely governed (if at all) at the municipal level in Metropolis, Brookport, or Joppa.
Building permits & codes
Unclear - verifyNo Massac County building department or permit ordinance was located. Illinois had no statewide building code until 2025, so county-level permit requirements for off-grid construction remain unconfirmed.
Septic & composting toilets
Generally allowedMassac County septic (private sewage) permitting is handled by the Southern Seven Health Department under state licensing law and a county private sewage disposal ordinance, though the ordinance text itself wasn't located online.
Greywater reuse
Unclear - verifyNo Massac County or Southern Seven page specifically addresses greywater reuse; it's likely handled case by case under private sewage rules, but this is not confirmed.
Rainwater harvesting
Unclear - verifyNo county or state-specific rule on residential rainwater harvesting was found for Massac County.
Private wells & water rights
Generally allowedSouthern Seven Health Department directly issues well permits, inspects wells, and handles abandoned well sealing for Massac County under the state Water Well Construction Code.
Living disconnected from utilities
Unclear - verifyNo county ordinance requiring grid electric or municipal water/sewer hookup was found for unincorporated Massac County; municipalities like Metropolis may have their own rules, so this is not confirmed.
Sun30-year normals
- Peak-sun hours, annual average
- 5.0 hrs/day
- Worst month (sizes an off-grid array)
- 3.3 hrs/day
- Yearly output per 1 kW of panels
- 1,406 kWh
JFMAMJJASOND
Weather1991-2020
- Precipitation
- 48 in/yr
- Snowfall
- 5 in/yr
- Heating degree days
- 4,502 (moderate)
- Frost-free season
- Apr 11 to Oct 22
How far help isstraight-line
- Hospital
Massac Memorial Hospital - 1.9 mi
- Fire station
Metropolis Fire Deptartment - 1.1 mi
- Hardware store
Wallace Industrial Tools and Supplies - 4.7 mi
- Grocery
Big John - 0.1 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 62960).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Massac County, IL?The rules above are the jurisdiction. The land check runs the parcel itself: flood zone, soils and septic suitability, wetlands, slope, access, climate, and these verdicts, from a parcel number or coordinates.
Check a parcel →Share or save this report:New report
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.
New here, or not sure where this fits? Start here walks through the whole thing in order.