Pleasanton is a city in Alameda County, California. Located in the Amador Valley, it is a suburb in the East Bay region of the Bay Area. The population was 79,871 at the 2020 census. In 2005 and 2007, Pleasanton was ranked the wealthiest middle-sized city in the United States by the Census Bureau. Pleasanton is home to the headquarters of Safeway, Workday, Ellie Mae, Roche Molecular Diagnostics, Blackhawk Network Holdings, and Veeva Systems. Other major employers include Kaiser Permanente, Oracle and Macy's. Although Oakland is the Alameda County seat, a few county offices are located in Pleasanton. The Alameda County Fairgrounds are located in Pleasanton, where the county fair is held during the last week of June and the first week of July. Pleasanton Ridge Regional Park is located on the west side of town.
Pleasanton was ranked number 4 in USA Today's list of "America's 50 best cities to live in" in 2014, number 63 in Money's list of "The Best Places to Live" in 2010, and was named one of "Americans' Top Hometown Spots" in the United States in 2009 by Forbes. Pleasanton was named the third wealthiest city in terms of earnings in the United States by NerdWallet in 2013 and 2016.