Does Worth, IL need an earthquake retrofit?

Worth 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. Nationally, Worth ranks above 40% of the 4,875 cities in this dataset for seismic hazard - the 40th percentile.

How Worth compares

The raw figures: peak ground acceleration 0.064g, short-period spectral response 0.127g, 1-second spectral response 0.066g. Among 330 Illinois cities in this dataset, Worth ranks 164 for seismic hazard, the 50th percentile within the state. About 10,660 people live in Worth, Illinois.

Retrofit economics for Worth

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for Illinois. A typical retrofit still runs $5,000-$10,000 nationally, about $7,000 for a common single-family job.

What this means for insurance

Outside California, earthquake coverage is typically sold as an endorsement added to a standard homeowners policy, not a separate product - worth asking about directly when getting a home-insurance quote for a Worth address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced Worth's numbers. The guide to what a Seismic Design Category actually means covers why a category is never a substitute for an engineer's assessment of one specific house.