Okmulgee's Seismic Design Category, explained

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Okmulgee in Seismic Design Category B: Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Okmulgee ranks above 50% of the 4,875 cities in this dataset for seismic hazard - the 50th percentile.

Where Okmulgee sits in Oklahoma

The raw figures: peak ground acceleration 0.08g, short-period spectral response 0.158g, 1-second spectral response 0.074g. Among 75 Oklahoma cities in this dataset, Okmulgee ranks 45 for seismic hazard, the 41th percentile within the state. About 11,354 people live in Okmulgee, Oklahoma.

What a retrofit costs in Okmulgee

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

Earthquake insurance for a Okmulgee 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 Okmulgee address.

More on how this number was built

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