Knox County Regional Airport: Where opportunity takes off

Tucked along the rolling hills southwest of Mount Vernon, the Knox County Regional Airport — known by its FAA designation, MI3 — is far more than a runway and some buildings. It’s an essential piece of Knox County’s economic engine, quietly driving business, industry, and opportunity in ways many residents might not realize. Some are surprised to hear they have a real airport that medium sized jets fly into.

A Gateway for Growth

For local manufacturers, corporate offices, and service industries, MI3 represents a direct line to the national economy. “Time is often the most valuable resource in business,” said Airport Authority Chair Joe Ziegman. “Having an airport right here means companies can move people and products efficiently, without the time or cost of major airport commutes.”

Executives can meet clients or investors and return home the same day. Medical and emergency flights save critical time. Even agricultural and utility operations rely on MI3 for aerial services that support the region’s infrastructure and rural landscape. When Jay Leno recently performed he flew in and flew out from MI3.

This accessibility makes Knox County a more attractive destination for new investment. In economic development terms, proximity to a regional airport isn’t just a convenience — it’s a competitive advantage.

Community Connection

While the airport may serve as a hub for business, it’s also deeply rooted in community life. Events like fly-ins, open houses, and youth aviation programs spark local interest and inspire the next generation of pilots and engineers. Partnerships with The Ohio State University, local schools and organizations have the potential to expand opportunities for hands-on learning in science, technology, and flight.

“The airport is an open door to possibility,” said Don Divelbiss, a business owner, pilot and current MI3 board member. “Kids see planes taking off and realize — this isn’t just something happening somewhere else. It’s happening right here in Knox County.”

Economic Impact Beyond the Runway

According to regional studies, general aviation airports like MI3 contribute millions annually to local economies — through jobs, visitor spending, aviation services, and support industries. Every aircraft housed at Knox County Regional Airport represents not just a plane, but a network of mechanics, suppliers, and service professionals.

Beyond the numbers, MI3 supports Mount Vernon’s growing profile as a balanced community where business and quality of life coexist. Companies looking to relocate or expand often cite transportation access as a key factor — and MI3 gives Knox County a strong position in that conversation.

Investing in the Future

In recent years, MI3 has seen continued investment in its facilities, from runway improvements to upgraded lighting, fueling systems, and hangar expansions. These projects — often backed by FAA and Ohio Department of Transportation grants — position the airport for future growth and new aviation technologies. “There is a large waiting list of owners seeking hanger space at Knox County Regional Airport because the board is so successful in their management”, said Josh Wynn, Airport General Manager.

Emerging trends in air mobility, electric aviation, and drone logistics may seem far off, but MI3’s infrastructure ensures Knox County will be ready. Regional airports like this one are expected to play an even larger role in local economies as transportation technology evolves.

Fast Facts About Knox County Regional Airport (MI3)

Location: Southwest of Mount Vernon, Airport Road off Rt 661 or Kinney Road off U.S. 36.

Runway: One paved runway (10/28), 5,500 feet long, equipped for day and night operations.

Primary Uses: General aviation, business and corporate flights, medical and emergency air service, and flight training.

Facilities: Fueling station and terminal (Jet A and AvGas), hangars, maintenance, and pilot amenities.

Governance: Operated by the Knox County Airport Authority, a locally appointed board.

Economic Role: Supports local jobs, attracts business travel, and contributes millions annually in economic activity.

Community Impact: Hosts open houses, promotes its Civil Air Patrol Unit for youth flight programs, and partners with The Ohio State University for future aviation events connecting residents with STEM opportunities.

Looking Ahead: Ongoing FAA/ODOT partnerships keep Mi3 ready for the next generation of air mobility.

Looking to the Horizon

As Knox County continues to grow, MI3 stands ready to meet the future head-on. The airport is more than infrastructure — it’s an open invitation for business, innovation, and community connection. Whether welcoming a visiting executive, aiding an emergency medical flight, or giving a local student their first view from the cockpit, Knox County Regional Airport reflects the county’s commitment to progress with purpose. It’s a clear reminder that even in a small community like ours, the sky is never the limit.