Fastest Growing Counties in Alaska (2025)

Alaska Counties Growth Overview

Alaska's counties show varied growth patterns from 2020 to 2025. Matanuska-Susitna Borough leads with 11.54% annualized growth, followed by Southeast Fairbanks Census Area (9.55%) and Bristol Bay Borough (9.52%). The largest counties are Anchorage Municipality (291,268), Matanuska-Susitna Borough (119,930), and Fairbanks North Star Borough (94,202). Of the 30 counties in Alaska, 12 are growing while 18 have experienced population decline. Overall, counties averaged -0.43% annualized growth, with total population growing by 1.47% annually.