Buffalo Grove, IL: what USGS's seismic model says

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Buffalo Grove 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 Buffalo Grove sits at the 34th percentile for seismic hazard among 4,875 US cities.

How Buffalo Grove compares

USGS's underlying values for Buffalo Grove: 0.056g peak ground acceleration, 0.111g at short period, 0.06g at 1 second. Within Illinois alone, Buffalo Grove ranks 272 of 330 cities by seismic hazard - the 18th percentile in-state. Buffalo Grove has a population of about 43,072.

What a retrofit costs in Buffalo Grove

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 Buffalo Grove 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 Buffalo Grove's figures come from

Buffalo Grove'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 Buffalo Grove.