Kirksville is a city located in Adair County, Missouri, United States. It serves as the county seat and is home to Truman State University and A.T. Still University. Kirksville has a population of approximately 17,519 (as of 2020) and covers an area of 12.11 square miles. The city is known for its educational institutions, healthcare facilities, and outdoor recreation opportunities. Additionally, Kirksville is often referred to as the "Pork Capital of the World" due to its strong presence in the pork industry.