Humboldt is an unincorporated community in Ross County, in the U.S. state of Ohio.
[1] Humboldt had its start in 1878 when the railroad was extended to that point.
[2] A post office called Humboldt was established in 1880, and remained in operation until 1935.
[3] Humboldt was a whistle stop on the Ohio Southern Railroad.
This Ross County, Ohio state location article is a stub.