Emigrant Gap (formerly, Wilsons Ranch)[4] is an unincorporated community in Placer County, California.

[2] The Wilsons Ranch post office opened in 1865, changed its name to Emigrant Gap in 1868.

[4] The name Wilsons Ranch honored a stage stop operator.

Summers are warm and occasionally hot with cool nights, while winters are cold and snowy.

The Western Regional Climate Center had a weather station at an elevation of 5014 feet right next to Emigrant Gap at Lake Spaulding.