Hobart Mills is a former settlement in Nevada County, California. It is situated at an elevation of above sea level.
The town is named after Walter Scott Hobart, Sr. who operated a sawmill in the area since 1897. Hobart was a leading lumberman in the Lake Tahoe district from the 1860s until his death in 1892.
There was a post office in the town during the period of 1900 through 1938.
The politician Patrick J. Hillings was born in Hobart Mills.