Does Maryville, MO need an earthquake retrofit?

Maryville carries Seismic Design Category B under USGS's ASCE 7-16 model. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Maryville in the 19th percentile nationally for seismic hazard - higher than 19% of the 4,875 US cities USGS was checked against here.

How Maryville compares

The raw figures: peak ground acceleration 0.037g, short-period spectral response 0.078g, 1-second spectral response 0.057g. Among 135 Missouri cities in this dataset, Maryville ranks 135 for seismic hazard, the 0th percentile within the state. About 10,193 people live in Maryville, Missouri.

What a retrofit costs in Maryville

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

More on how this number was built

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