Rantoul, IL: what USGS's seismic model says

Rantoul carries Seismic Design Category C under USGS's ASCE 7-16 model. Moderate seismic hazard. Code adds irregular-building restrictions and requires bracing of some nonstructural components (e.g. tall shelving, water heaters) in addition to structural detailing. Rank it against the rest of the country and Rantoul sits at the 67th percentile for seismic hazard among 4,875 US cities.

Where Rantoul sits in Illinois

USGS's underlying values for Rantoul: 0.075g peak ground acceleration, 0.157g at short period, 0.085g at 1 second. Within Illinois alone, Rantoul ranks 66 of 330 cities by seismic hazard - the 80th percentile in-state. Rantoul has a population of about 12,268.

Bracing and bolting: the actual cost

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.

Insuring against this, not just retrofitting

A Rantoul 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 Rantoul's figures come from

Rantoul's Category C 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 C does and doesn't tell you about Rantoul.