Bolthole Index

Illinois · Off-grid & homestead potential

McHenry County

30Index Score / 100
#96 of 102 in Illinois

McHenry County scores 30/100 on the Bolthole Index, a weak county profile. Its strengths are mixed durability signals. The trade-offs: about 361,985 people within a 30-minute drive.

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County locator

McHenry County in Illinois

30
County map
McHenry County highlighted among the Illinois counties · colored by Index score

How McHenry County scores

Seclusion9100% ev.
Self-Sufficiency56100% ev.
Admin Boringness4390% ev.
Durability68100% ev.
Property Autonomy42100% ev.
Carry Cost51100% ev.

Evidence strength: 98%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$372kTypical home
2.5%Property tax
$8,304Land / acre
37.4"Annual rain
7.8% of yrsSevere drought
3 / yr (+2.9)Mid-century 100°F days
13.6 daysMid-century dry spell
1.7" (+7.5%)Mid-century 1-day rain
1.71×Wildfire change factor
100%Forward climate coverage
$1,672Home insurance / yr
3.4% / yrInsurance growth
1.1%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
361,985People within 30 min
12,745,880People within 2 hr
385,974Radius comparison (15 mi)
518.4People / sq mi
0.2%Federal land
96.7%Land at 15% slope or less
2.5%Septic soil without severe limits
9,317 acWorkable land screen
25.6%Wooded land
50.5 tonsBiomass / forest ac
48.2°FAvg temp

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Property hunt

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A planning estimate, not a valuation or contractor quote. The USDA benchmark includes farm land and buildings; it is context, not a parcel comp.

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Building & land-use rules in McHenry County

What it takes to build here — permits, zoning, and septic — scouted from McHenry County’s own official sources.

  • Building permitRequired

    The McHenry County Planning & Development (Building Division) issues building permits for unincorporated county land; permits go through zoning, stormwater and plan review.

    McHenry County Planning & Development - Building Division ↗
  • County zoningYes

    McHenry County zones unincorporated land; zoning is one of the required permit reviews and is governed by county ordinances.

    McHenry County Planning & Development - Ordinances ↗
  • Septic permittingMcHenry County Department of Health, Environmental Health Division

    A permit from the McHenry County Department of Health is required to install, alter, repair, replace or abandon a septic (onsite wastewater treatment) system under the county Public Health Ordinance (IDPH framework).

    McHenry County Health Department - Onsite Wastewater Treatment Systems ↗
  • Owner-builderNot published

    Not published on an official source — confirm with the county.

  • Building inspectionsNot published

    Not published on an official source — confirm with the county.

  • Occupancy certificateNot published

    Not published on an official source — confirm with the county.

  • Septic permitNot published

    Not published on an official source — confirm with the county.

  • Septic inspectionNot published

    Not published on an official source — confirm with the county.

  • Off-grid sanitationNot published

    Not published on an official source — confirm with the county.

Always confirm current rules with McHenry County Planning & Development / McHenry County Department of Health before you buy or build. Scouted Jul 2026 from official county sources.

Living off-grid in McHenry County, Illinois

Is McHenry County a good place to live off-grid or homestead?

McHenry County scores 30/100 on the Bolthole Index, a weak county profile. Its strengths: mixed durability signals. Watch-outs: about 361,985 people within a 30-minute drive.

Do you need a building permit in McHenry County, Illinois?

McHenry County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by McHenry County Department of Health, Environmental Health Division. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in McHenry County, Illinois?

Land in McHenry County runs about $8,304 per acre, based on the latest county data.

What is the water situation in McHenry County?

McHenry County gets about 37.4" of rain a year, with severe drought in roughly 7.8% of years.

How remote is McHenry County?

A representative private-land location has about 361,985 people within a 30-minute drive and 12,745,880 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

Off-grid gear

Going off-grid in McHenry County means bringing your own water and power. The kit we’d start with:

WaterCrystal QuestFilter any source — well, rain, or creek — to drinking-clean.PowerBluettiSolar generators and home battery backup for living off the grid.

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How McHenry compares in Illinois

Compare side-by-side →See all 102 Illinois counties ranked →