Moraga (incorporating the former communities of Moraga Town, Rheem, and Rheem Valley) is a suburban incorporated town located in Contra Costa County, California. It is named in honor of Joaquin Moraga, whose grandfather was José Joaquin Moraga, second in command to Juan Bautista de Anza. As of the 2000 census, Moraga was the 79th wealthiest place in the US with a population above 10,000. As of 2010, Moraga had a total population of 16,016 people.
It is located adjacent to the cities of Lafayette and Orinda, as well as the unincorporated community of Canyon. Other nearby cities include Orinda, Walnut Creek, Oakland, San Francisco, Concord and Berkeley.
According to the United States Census Bureau, the town has a total area of 9.4 square miles, of which, 9.4 square miles of it is land and 0.09% is water. Originally Moraga was abundant with pears, however, over the years more houses are being built and it is losing its pear trees. Large sections of the Lafayette-Moraga Regional Trail pass through the town.
Moraga is a valley, surrounded by rolling hills (green in the winter, brown in the summer) and grazing cows. Residents enjoy walking or biking many trails in the Lamorinda area. Moraga is well known for its school district, which attracts many people from surrounding cities, such as Berkeley, California, Walnut Creek, and even as far away as Martinez, California.
Moraga has a Mediterranean climate, with warm, dry summers and cool, wet winters. In the summer, morning fog is a common occurrence, but it usually burns off by the late morning or early afternoon, giving way to clear skies the rest of the day. Most of the annual rainfall comes during the winter; snow is very rare, but occasional light dustings have been seen. Over the course of a year, the town averages 26 days of 90°F or higher, 40 nights of 32°F or lower, and 59 days with rain.