San Lucas (Spanish for "St. Luke") is an unincorporated community and census-designated place (CDP) in Monterey County, California, United States.

The Southern Pacific Railroad reached the place in 1886 and named it for the Rancho San Lucas Mexican land grant.

[6] The San Lucas post office opened in 1887 (having been transferred from Griswold).

[6] San Lucas is located in southeastern Monterey County at 36°07′44″N 121°01′14″W / 36.12889°N 121.02056°W / 36.12889; -121.02056, on the east side of the Salinas Valley.

According to the United States Census Bureau, the San Lucas CDP has a total area of 0.4 square miles (1.0 km2), all of it land.

This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 °F.

[7] The 2010 United States Census[8] reported that San Lucas had a population of 269.

There were 76 housing units at an average density of 192.8 per square mile (74.4/km2), of which 36 (53.7%) were owner-occupied, and 31 (46.3%) were occupied by renters.

[10] Media related to San Lucas, California at Wikimedia Commons