El Reno, OK: what USGS's seismic model says

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places El Reno in Seismic Design 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. Rank it against the rest of the country and El Reno sits at the 77th percentile for seismic hazard among 4,875 US cities.

Where El Reno sits in Oklahoma

USGS's underlying values for El Reno: 0.2g peak ground acceleration, 0.326g at short period, 0.081g at 1 second. Within Oklahoma alone, El Reno ranks 14 of 75 cities by seismic hazard - the 82th percentile in-state. El Reno has a population of about 20,041.

Bracing and bolting: the actual cost

A full earthquake retrofit typically runs $5,000-$10,000 nationally (around $7,000 typical), driven mainly by house size and foundation type, not by Oklahoma specifically. California's Earthquake Brace + Bolt grant, which covers a large share of this cost, is a California-only program and does not apply in Oklahoma.

Insuring against this, not just retrofitting

A El Reno homeowner cannot buy a standalone earthquake policy in most cases - it is added to an existing homeowners policy as an endorsement, so the place to start is a regular home-insurance quote.

Where El Reno's figures come from

El Reno's Category C and every number above trace to USGS's own ASCE 7-16 Design Maps service - see the methodology guide. See the category explainer for what Category C does and doesn't tell you about El Reno.