| Selby | |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | California |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in California |
| Coordinates: | 38.0567°N -122.2439°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | California |
| Subdivision Type2: | County |
| Subdivision Name2: | Contra Costa County |
| Elevation Ft: | 20 |
| Elevation M: | 6 |
| Blank Name: | GNIS ID[1] [2] |
| Blank1 Name: | FIPS code |
| Blank1 Info: | 06-70868 |
Selby is an unincorporated community in Contra Costa County, in the East Bay region of the San Francisco Bay Area in northern California.
The town is located on the Carquinez Strait where its enters San Pablo Bay, across from Vallejo. The town at an elevation of 20 feet (6 m).
It is next to Rodeo, on the Southern Pacific Railroad, and 6.5miles west-northwest of Martinez.
Selby is located on the 19th century Mexican land grant Rancho El Pinole site, that was made to Ygnacio Martinez.
A post office operated at Selby from 1886 to 1967. The name honors Prentiss Selby, its first postmaster.
Al Zampa, a bridge construction worker who played an integral role in the construction of numerous San Francisco Bay Area bridges, was born here in 1905. The suspension bridge unit of the twin Carquinez Bridge is officially called the Alfred Zampa Memorial Bridge, completed in 2003 to the east of town.