Goodyear, AZ: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, Goodyear is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Goodyear in the 47th percentile nationally for seismic hazard - higher than 47% of the 4,875 US cities USGS was checked against here.

Goodyear by the numbers

The raw figures: peak ground acceleration 0.072g, short-period spectral response 0.164g, 1-second spectral response 0.072g. Among 57 Arizona cities in this dataset, Goodyear ranks 55 for seismic hazard, the 4th percentile within the state. About 118,186 people live in Goodyear, Arizona.

Retrofit economics for Goodyear

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for Arizona. 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 Goodyear address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced Goodyear'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.