State Primary Election
September 1, 2026 7:00 am - 8:00 pm | Williamstown Elementary School Gymnasium, 115 Church St, Williamstown, MA 01267, USA | See more details
Berkshire Regional Planning Commission- Executive Committee
September 3, 2026 4:00 pm - 5:00 pm | Virtual- ZOOM only | See more details
Board of Health
September 8, 2026 9:00 am - 10:00 am | 31 North Street, Williamstown, MA 01267 | See more details
Planning Board
September 8, 2026 7:00 pm - 9:00 pm | Hybrid Meeting (In person at 31 North St. & Zoom Participation) & Streaming Live willinet.org & Spectrum TV Channel 1303 | See more details
Milne Public Library Trustees Meeting
September 9, 2026 5:30 pm - 6:30 pm | 1095 Main St, Williamstown, MA 01267, USA | See more details
Finance Committee
September 9, 2026 7:00 pm - 9:00 pm | Community Meeting Room, 31 North Street, Williamstown, MA 01267 | See more details
Conservation Commission
September 10, 2026 7:00 pm - 9:00 pm | Hybrid Meeting (In person at 31 North Street, Williamstown & Zoom Participation) & Streaming Live on willinet.org & Willinet TV Channel 1303 | See more details

Town Hall is located at:
31 North St.
Williamstown, MA 01267
Two (2) times per year, generally in the fall (October) and the spring (April).
Yes, you will be charged 14% interest the day after the due date.
The day it is received in the Collectors office, not the postmark date.
Yes, in most cases. You may apply for an abatement at the Assessor’s Office. If a refund is due you will receive it in the following month of abatement. Refunds are done once a month.
Cash, checks or money orders are accepted in person, but credit cards are not accepted. You can also pay online with a credit card or check, with fees at the owner’s expense.
Using this form will send a message to the designated department contact.
31 North Street, Second Floor
Williamstown, MA 01267
Mon-Fri, 8:30am-4:30pm