Rogers's Seismic Design Category, explained

Under the seismic model IBC and ASCE 7 use for new construction, Rogers is Category C. Moderate seismic hazard. Code adds irregular-building restrictions and requires bracing of some nonstructural components (e.g. tall shelving, water heaters) in addition to structural detailing. Nationally, Rogers ranks above 67% of the 4,875 cities in this dataset for seismic hazard - the 67th percentile.

How Rogers compares

The raw figures: peak ground acceleration 0.075g, short-period spectral response 0.157g, 1-second spectral response 0.091g. Among 68 Arkansas cities in this dataset, Rogers ranks 53 for seismic hazard, the 22th percentile within the state. About 75,639 people live in Rogers, Arkansas.

Bracing and bolting: the actual cost

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

More on how this number was built

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