Glencoe, IL: what USGS's seismic model says

Glencoe carries Seismic Design Category B under USGS's ASCE 7-16 model. 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 Glencoe sits at the 32th percentile for seismic hazard among 4,875 US cities.

Where Glencoe sits in Illinois

USGS's underlying values for Glencoe: 0.054g peak ground acceleration, 0.108g at short period, 0.059g at 1 second. Within Illinois alone, Glencoe ranks 287 of 330 cities by seismic hazard - the 13th percentile in-state. Glencoe has a population of about 8,720.

What a retrofit costs in Glencoe

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 Glencoe 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 Glencoe's figures come from

Glencoe'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 Glencoe.