Greenwood, El Dorado County, California

Greenwood (formerly, Long Valley, Green Valley, Lewisville, and Louisville) is an unincorporated community in El Dorado County, California. It is located 4 mi west of Georgetown, at an elevation of 1608 feet (490 m).

The place was originally called Long Valley, then Green Valley, then Lewisville, and finally Greenwood, in honor of John Greenwood who set up a trading post there in 1848. The Louisville post office operated from 1852 to 1852, when it was moved and renamed to Greenwood. A schoolhouse operated at Greenwood until 1954, and since then local schoolchildren have been bused to Cool, although the school remains standing.

The community is now registered as California Historical Landmark #521.