Grover Beach is a city in San Luis Obispo County, California, United States. The population was 13,156 at the 2010 census, up from 13,067 in 2000.HistoryGrover Beach was originally known as Town of Grover, which was founded on August 1, 1887. The town was named for its founder, D.W. Grover.Grover filed his plans at the San Luis Obispo County Court House and eventually founded what was to be known as City of Grover City. There was a popular vote that allowed incorporating on December 21, 1959 as City of Grover City. However, the name seemed redundant so some people sought better names, especially ocean-oriented names. In 1992, there was another popular vote, in which the town's name was officially changed from "City of Grover City" to "Grover Beach" to emphasize the seaside location.GeographyGrover Beach is part of the 5 Cities Metropolitan Area. The "5 Cities" is actually only 3 cities; Grover Beach, Pismo Beach, and Arroyo Grande. Oceano is a Community Service District and Shell Beach is part of Pismo Beach. The city extends from Arroyo Grande in the east to Pismo State Beach. Grover Beach is located at (35.120934, -120.619529).According to the United States Census Bureau, the city has a total area of 2.3sqmi, of which 99.81% is land and 0.19% is water.ClimateThis region experiences warm and dry summers, with no average monthly temperatures above 71.6 °F. According to the Köppen Climate Classification system, Grover Beach has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps.