Bolthole Index county-legal census · checked 2026-07-01

Illinois Counties With No Building Codes

23 of Illinois's 102 counties — 23% — do not require a residential building permit in their unincorporated areas. That is the 10th-largest count of any state. The strongest of them on the Bolthole Index is Clark County (76/100). Every entry below cites the county’s own official source.

Rules change, and cities inside these counties set their own — treat this as a verified starting point, not legal advice. All 784 counties nationwide → Illinois counties with no zoning Full Illinois profile →

23 of 102 Illinois counties · sorted by Index score

The Bolthole Index Letter

One email a week: the best counties to live off-grid, rule changes that matter, and rule changes as Illinois counties adopt or drop codes. No spam, unsubscribe anytime.

Keep exploring

Every county here has a full profile — water, land prices, hazard safety, seclusion, and the rest of its building rules. See the Illinois state page for all 102 counties ranked, or go back to the national list.

General guidance, not legal advice. Off-grid, building, and land-use rules are often set at the county level and change often. Verify with your county and state before acting. Data reviewed 2026-06-26.