Greene County

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View the 2025 U.S. Census demographic profile for Greene County

Greene County — County Seat: Xenia

2026 Population Estimate: 176,496  |  Official Website: https://www.greenecountyohio.gov/

Greene County is a dynamic southwestern Ohio county with Xenia as its county seat. The county is dominated by the massive presence of Wright-Patterson Air Force Base — one of the largest and most important air force bases in the United States and the home of the National Museum of the United States Air Force — the world's largest aviation museum, with free admission and over 400 aircraft and missiles on display, drawing nearly 1.2 million visitors annually. Greene County is also home to three major universities: Wright State University, Cedarville University (a prominent Christian university), and Wilberforce University (the oldest private HBCU in the United States, founded 1856). The charming communities of Beavercreek, Fairborn, and Yellow Springs (home of Antioch College and a vibrant arts community) add tremendous diversity. The county is experiencing sustained residential growth.

▸ Key Industries & Major Employers
Defense, aerospace, research, higher education, and healthcare.
Wright-Patterson Air Force Base (one of the U.S.'s largest Air Force installations and its top research hub) is the dominant employer with 28,000+ employees. Antioch University, Cedarville University, and Central State University anchor higher education. Premier Health (Greene Memorial Hospital) and the Air Force Research Laboratory are major civilian employers.

▸ Notable Economic Development Initiatives
The Greene County Port Authority and CityWorks work with AFRL's technology commercialization programs to spin out defense technology into civilian markets. The Dayton Development Coalition coordinates regional aerospace strategy. A 2024 initiative linked Greene County workforce training programs to WPAFB's growing cyber and technology workforce needs.

▸ Infrastructure & Investment Highlights
I-675 provides primary access between Dayton and Greene County. US-35 and SR-444 (WPAFB access) are critical defense infrastructure roads. Dayton International Airport is 20 minutes northwest. The county invested in water and sewer capacity upgrades to support commercial growth in Beavercreek and Xenia.