Coffeyville is a city in southeastern Montgomery County, Kansas, United States, located along the Verdigris River in the state's southeastern region. As of the 2020 census, the population of the city was 8,826. Coffeyville is the most populous city of Montgomery County, and the home to Coffeyville Community College. The town of South Coffeyville, Oklahoma is approximately 1 mile south of the city.

Montgomery County is a county located in Southeast Kansas. Its county seat is Independence, and its most populous city is Coffeyville. As of the 2020 census, the county population was 31,486. The county was named after Richard Montgomery, a major general during the American Revolutionary War.