De Graff is an unincorporated community in Butler County, Kansas, United States.

[1] It is located on U.S. Route 77 approximately 7.7 miles (12.4 km) north of I-35 (Kansas Turnpike) In 1877, the Florence, El Dorado, and Walnut Valley Railroad Company built a branch line from Florence to El Dorado,[2] and a station called De Graff was built.

[4] The original branch line connected Florence through El Dorado to Arkansas City.

[6] The climate in this area is characterized by hot, humid summers and generally mild to cool winters.

U.S. Route 77 highway runs north–south on the east side of De Graff, and follows roughly parallel to the old railway.