For GPS purposes, the address is approximately:
42.30311902926332, -85.46250835786263

Chipman Preserve is in the 8000 block of East Main St.; 3 miles east of Sprinkle Rd. between 30th and 33rd Streets in Comstock Township (Galesburg mailing address), in Kalamazoo County. The preserve entrance is on the north side of the street.