Holdenville, OK: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, Holdenville is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Holdenville ranks above 61% of the 4,875 cities in this dataset for seismic hazard - the 61th percentile.

Where Holdenville sits in Oklahoma

USGS's underlying values for Holdenville: 0.142g peak ground acceleration, 0.247g at short period, 0.08g at 1 second. Within Oklahoma alone, Holdenville ranks 31 of 75 cities by seismic hazard - the 59th percentile in-state. Holdenville has a population of about 5,893.

Retrofit economics for Holdenville

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 Holdenville 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 Holdenville's figures come from

Holdenville's Category B 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 B does and doesn't tell you about Holdenville.