Does Ocean Springs, MS need an earthquake retrofit?

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Ocean Springs in Seismic Design Category B: Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Ocean Springs ranks above 27% of the 4,875 cities in this dataset for seismic hazard - the 27th percentile.

How Ocean Springs compares

The raw figures: peak ground acceleration 0.046g, short-period spectral response 0.094g, 1-second spectral response 0.058g. Among 61 Mississippi cities in this dataset, Ocean Springs ranks 52 for seismic hazard, the 15th percentile within the state. About 18,954 people live in Ocean Springs, Mississippi.

Bracing and bolting: the actual cost

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

More on how this number was built

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