This page summarizes earthquakes in Humboldt County (United States). The most recently recorded event was a magnitude M1.8 earthquake near Humboldt County on 2026-08-01 19:59:40 UTC. All event lists and map markers are limited to the last 30 days.
Humboldt County is the westernmost county in the U.S. state of California. As of the 2020 census, the population was 136,463. Humboldt County comprises the Eureka–Arcata–Fortuna, California, Micropolitan Statistical Area. The county seat is Eureka.
In 2026, Humboldt County recorded 73 earthquakes within United States. The average magnitude was M1.96. The strongest event reached M3.2.
By event count in 2026, this region ranks #45 within United States.
Located on the North America Plate.
