Port Lambton United Church is located at the corner of William and Merritt Streets, two block east of the St. Clair Parkway, within the Village of Port Lambton, Ontario, Canada. Port Lambton is located along the St. Clair Parkway/County Road 33 on the eastern shores of the St. Clair River north of Wallaceburg and south of Sarnia.

If you are travelling Highway 40 from Wallaceburg or Sarnia, take the westbound exit onto Lambton Line/County Road 1. Follow this road into the Village of Port Lambton where the Lambton Line becomes Broadway Street. Turn left/south onto Hill Street and access the church parking lot off of this street. If you are travelling County Road 33/St. Clair Parkway, turn east on William Street with parking available south and east of the church.

If you are travelling from Michigan, ferry service is available at the Algonac/Walpole Island crossing. After travelling east through Walpole Island, travel north along the St. Clair Parkway to Port Lambton.