Latitude / Longitude:
40°24’40 N 87°24’56 W
Eastern (EST) (UTC-5)
Walnut Grove was a small town (now extinct) in Prairie Township, Warren County, Indiana, located three miles east of Tab. A 1913 history describes the town’s population as about 50.
A post office was once established at Walnut Grove in 1872, and remained in operation until it was discontinued in 1900.