Office of the CAO - Northumberland County

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Mail services are currently unavailable due to a national strike at Canada Post. Impacted County services are available online or in person during the disruption to mail services.

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Office of the CAO

Contact Us

+1 905-372-3329

Address:

Northumberland County Headquarters

555 Courthouse Road

Cobourg, ON K9A 5J6

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Northumberland County Headquarters

555 Courthouse Road, Cobourg, ON K9A 5J6

Phone: +1 905-372-3329

We respectfully acknowledge Northumberland County is located in the traditional and treaty territory of the Michi Saagiig (Mississauga) and Chippewa Nations, collectively known as the Williams Treaties First Nations.