McComb, MS: what USGS's seismic model says

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places McComb in Seismic Design Category B: Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Rank it against the rest of the country and McComb sits at the 29th percentile for seismic hazard among 4,875 US cities.

How McComb compares

The raw figures: peak ground acceleration 0.048g, short-period spectral response 0.1g, 1-second spectral response 0.066g. Among 61 Mississippi cities in this dataset, McComb ranks 48 for seismic hazard, the 22th percentile within the state. About 11,762 people live in McComb, Mississippi.

What a retrofit costs in McComb

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.

Insuring against this, not just retrofitting

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 McComb address.

More on how this number was built

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