The Addison County Economic Development Corporation (ACEDC) was officially chartered on November 8, 1991 as a 501(c)(6), not-for-profit Vermont corporation. ACEDC evolved out of Addison County regional economic development activities that formally began with the chartering and start-up of Otter Creek Development Corporation (OCDC) in 1985. OCDC represented all Addison County towns, with the exception of Hancock and Granville. ACEDC was initially a wholly owned subsidiary of the Addison County Chamber of Commerce. It became a freestanding corporation in July 1994 and is now one of 12 independent regional development corporations throughout Vermont.

In 1993, ACEDC was one of five regional development corporations to receive a $200,000 grant to create a Revolving Loan Fund (RLF) for Addison County businesses. ACEDC has since been the recipient of additional USDA/Rural Development loan funds in 1995, 1998, 2009, and 2021. ACEDC has loaned over $5,000,000 to 120 projects to support business creation, growth and expansion and to retain and create hundreds of jobs. These loan funds continue to revolve to support new start-ups and business expansion.

ACEDC also received a special state appropriation for a Champlain Bridge Loan Fund to support businesses that were negatively impacted by the closure of the Champlain Bridge on October 16, 2009. All except one of those loans are closed.