
Matanuska-Susitna Borough
- State:
- Alaska
Matanuska-Susitna Borough's estimated 2025 population is 118,773 with a growth rate of 1.51% in the past year according to the most recent United States census data. Matanuska-Susitna Borough is the 2nd largest county in Alaska. The 2010 population was 89,731 and has seen a growth of 32.37% since that time.