This page summarizes earthquakes in Matanuska-Susitna Borough (United States). The most recently recorded event was a magnitude M1.1 earthquake near Matanuska-Susitna Borough on 2026-07-31 04:46:54 UTC. All event lists and map markers are limited to the last 30 days.
Matanuska-Susitna Borough is a borough located in the U.S. state of Alaska. Its borough seat is Palmer, and the largest incorporated community is Wasilla. As of the 2020 census, the borough's population was 107,081.
In 2026, Matanuska-Susitna Borough recorded 1430 earthquakes within United States. The average magnitude was M1.87. The strongest event reached M5.2.
Based on the number of recorded earthquakes in 2026, Matanuska-Susitna Borough is currently among the Top 5 most active regions in United States (rank #3 by count).
Considering the strongest recorded event in 2026, Matanuska-Susitna Borough is among the Top 5 strongest regions in United States (rank #5 by max magnitude).
Located on the North America Plate.
