2026 Property Tax Due Dates
Installment 1
Varies by town
First installment (Oct-Nov typical)
Installment 2
Varies by town
Second installment (Mar-Apr typical)
Penalty: Interest accrues day after due dateGrace period: None
Payment Methods
Online, Mail, In-Person
Knox County Treasurer
How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Knox County Treasurer
In Person
Visit the Treasurer's office
Other Counties in Maine
About Knox County
Knox County is a county located in the state of Maine, United States. As of the 2020 census, the population was 40,607. Its county seat is Rockland.
Source: Wikipedia — content available under CC BY-SA 4.0
Related Resources
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Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.