Mason, OH: what USGS's seismic model says

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Mason in Seismic Design Category B: Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Mason ranks above 44% of the 4,875 cities in this dataset for seismic hazard - the 44th percentile.

How Mason compares

The raw figures: peak ground acceleration 0.069g, short-period spectral response 0.139g, 1-second spectral response 0.073g. Among 254 Ohio cities in this dataset, Mason ranks 138 for seismic hazard, the 46th percentile within the state. About 36,046 people live in Mason, Ohio.

What a retrofit costs in Mason

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

Earthquake insurance for a Mason home

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 Mason address.

More on how this number was built

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