ICCU is the largest credit union in Idaho, with numerous branches serving over 670,000 members with assets over $12 billion; its governing agency is the state's Department of Finance.

Persons in Oneida, Bear Lake, Franklin, Caribou, and Twin Falls counties were added to the field of membership in 1984.

ICCU's field of membership includes: Idaho Central Credit Union is governed by an elected board of directors.

[6] In 2022, Idaho Central Credit Union signed a lifetime deal for the naming rights for a performing arts center in Spokane Valley.

The Idaho Central Spokane Valley Performing Arts Center will be a 59,000 square-foot-facility on a 5-acre site expected to open in 2024.