Idaho Central Credit Union is expanding to Arizona through a merger with Tucson Old Pueblo Credit Union.

The deal will create an institution serving approximately 700,000 members across Arizona, Idaho, and Washington and follows a TOPCU member vote that overwhelmingly approved the combination.

The $12.1 billion-asset ICCU said the deal became official on Feb. 1, and full system integration will take place in September. 

ICCU, the 18th largest credit union in the nation, said although it did not previously have a formal presence in Arizona, it has had a vested interest with 2,200 of its members already living in the state. 

The Chubbuck, Idaho-based credit union is jumping into its newest market with both feet, having committed to investing at least $1 million in Tucson nonprofits and community organizations over the next five years.

“We are proud to commit to the Tucson community and to build upon the charitable foundation TOPCU has established over the past 90 years,” said ICCU President and CEO Brenda Worrell. “Our commitment to invest $1 million over the next five years is just the beginning.”

The $211 million-asset TOPCU has 17,000 members and two branches in the city.

“Our board of directors and I have explored multiple options to reinforce our mission and serve the financial needs of our membership and community,” said TOPCU CEO Vernon Babilon. “By merging with ICCU, we would extend our mission and afford new opportunities for our staff.”

ICCU also recently announced a planned expansion to Tri-Cities, Washington. The credit union said by diversifying its markets and developing further into Washington, it is positioned to welcome new members while enhancing the banking experience for current ones.

The Tri-Cities expansion is expected to happen before the end of 2025. ICCU entered Washington with a branch in Spokane in 2022. 

ICCU has roughly 672,000 members that it serves with more than 60 branches.

The credit union earned roughly $113.3 million in 2024, a 19% increase compared to a year earlier, according to call report data from the National Credit Union Administration.

Tucson Old Pueblo CU earned $260,000 last year after losing $893,000 in 2023.

“Our commitment to invest $1 million over the next five years is just the beginning.”

 – Brenda Worrell
President and CEO
ICCU