Owasso, OK: what USGS's seismic model says

Owasso 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. Rank it against the rest of the country and Owasso sits at the 36th percentile for seismic hazard among 4,875 US cities.

Where Owasso sits in Oklahoma

USGS's underlying values for Owasso: 0.059g peak ground acceleration, 0.124g at short period, 0.071g at 1 second. Within Oklahoma alone, Owasso ranks 65 of 75 cities by seismic hazard - the 14th percentile in-state. Owasso has a population of about 42,821.

What a retrofit costs in Owasso

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.

What this means for insurance

A Owasso 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 Owasso's figures come from

Owasso'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 Owasso.