Wilson, NC: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, Wilson is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Wilson in the 30th percentile nationally for seismic hazard - higher than 30% of the 4,875 US cities USGS was checked against here.

Wilson by the numbers

The raw figures: peak ground acceleration 0.05g, short-period spectral response 0.105g, 1-second spectral response 0.052g. Among 147 North Carolina cities in this dataset, Wilson ranks 134 for seismic hazard, the 9th percentile within the state. About 48,579 people live in Wilson, North Carolina.

Retrofit economics for Wilson

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

Earthquake insurance for a Wilson 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 Wilson address.

More on how this number was built

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