What's New?
June 20th, 2025
Mainstreet Credit Union Officially Opens New Petrolia Branch
Mainstreet Credit Union is pleased to announce the opening of its new full-service branch in Petrolia, located at 4128 Petrolia Line. The new location officially opens to members on June 23, 2025, bringing a full suite of financial services and enhanced convenience to the growing Petrolia community.
September 9th, 2024
Mainstreet Credit Union Unveils Newly Renovated London Road Branch in Sarnia
Mainstreet Credit Union is pleased to announce the re-opening of its London Road branch in Sarnia on September 9, 2024. The branch, located at 1295 London Road, has undergone extensive renovations to create a modern and welcoming environment that will better serve members' needs.
August 6th, 2024
Mainstreet Credit Union Holds Groundbreaking Ceremony for New Petrolia Branch
Today, Mainstreet Credit Union held a groundbreaking ceremony to mark the start of construction of a new full-service branch at 4128 Petrolia Line. The event was attended by Mainstreet's Executive Leadership team and community figures celebrate Mainstreet’s permanent home in the community.
April 2nd, 2024
Mainstreet Credit Union and PenFinancial Credit Union Conclude Merger Exploration
After careful consideration through a rigorous due diligence process and business case development, we are letting our members know that the merger will not be proceeding.
November 1st, 2023
Mainstreet & Penfinancial Explore Merger Opportunity
We're excited to share that Mainstreet has engaged in preliminary discussions regarding a merger with Penfinancial Credit Union, pending satisfactory due diligence, regulatory approval and a successful member vote.