This page summarizes earthquakes in Howard County (United States). The most recently recorded event was a magnitude M2.1 earthquake near Howard County on 2026-07-30 17:04:43 UTC. All event lists and map markers are limited to the last 30 days.
Howard County is located in the U.S. state of Maryland. As of the 2020 census, the population is 334,529. Since there are no incorporated municipalities, there is no incorporated county seat either. Therefore, its county seat is the unincorporated community of Ellicott City.
In 2026, Howard County recorded 108 earthquakes within United States. The average magnitude was M1.58. The strongest event reached M3.9.
By event count in 2026, this region ranks #33 within United States.
Located on the North America Plate.
