Orland Hills, IL: what USGS's seismic model says

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Orland Hills in Seismic Design Category B: Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Rank it against the rest of the country and Orland Hills sits at the 41th percentile for seismic hazard among 4,875 US cities.

How Orland Hills compares

USGS's underlying values for Orland Hills: 0.065g peak ground acceleration, 0.13g at short period, 0.067g at 1 second. Within Illinois alone, Orland Hills ranks 142 of 330 cities by seismic hazard - the 57th percentile in-state. Orland Hills has a population of about 6,676.

What a retrofit costs in Orland Hills

A full earthquake retrofit typically runs $5,000-$10,000 nationally (around $7,000 typical), driven mainly by house size and foundation type, not by Illinois specifically. California's Earthquake Brace + Bolt grant, which covers a large share of this cost, is a California-only program and does not apply in Illinois.

What this means for insurance

A Orland Hills homeowner cannot buy a standalone earthquake policy in most cases - it is added to an existing homeowners policy as an endorsement, so the place to start is a regular home-insurance quote.

Where Orland Hills's figures come from

Orland Hills's Category B and every number above trace to USGS's own ASCE 7-16 Design Maps service - see the methodology guide. See the category explainer for what Category B does and doesn't tell you about Orland Hills.