Bradford, PA: what USGS's seismic model says

Bradford carries Seismic Design Category A under USGS's ASCE 7-16 model. Lowest seismic design category. Building code requires no seismic-specific detailing here beyond ordinary construction practice. Rank it against the rest of the country and Bradford sits at the 15th percentile for seismic hazard among 4,875 US cities.

Where Bradford sits in Pennsylvania

The raw figures: peak ground acceleration 0.054g, short-period spectral response 0.107g, 1-second spectral response 0.039g. Among 193 Pennsylvania cities in this dataset, Bradford ranks 170 for seismic hazard, the 12th percentile within the state. About 7,538 people live in Bradford, Pennsylvania.

What a retrofit costs in Bradford

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

More on how this number was built

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