There are 4,173 earthquake incidents in Oklahoma on record since 1931. The state averages 50 earthquakes per year. The largest earthquake on record for Oklahoma occurred on 11/06/2011, with a depth of 5.2 miles and a magnitude of 5.6 on the Richter scale in Lincoln County, OK.
Yearly Average Number of Earthquakes in Oklahoma
Total Number of Earthquakes in Oklahoma since 1931