Contra Costa County is a county located in the U.S. state of California, in the East Bay of the San Francisco Bay Area. As of the 2020 United States Census, the population was 1,165,927. The county seat is Martinez. It occupies the northern portion of the East Bay region of the San Francisco Bay Area and is primarily suburban. The county's name refers to its position on the other side of the bay from San Francisco. Contra Costa County is included in the San Francisco–Oakland–Berkeley, CA Metropolitan Statistical Area.
Kensington is an unincorporated community and census designated place located in the Berkeley Hills, in the East Bay, part of the San Francisco Bay Area, in Contra Costa County, California. In the 20th century it was considered part of Berkeley, although it is across the county line. House numbers follow the pattern used in Berkeley, and Kensington shares two zip codes with the Berkeley Hills area.
Rodeo is a census-designated place (CDP) located in Contra Costa County, California, in the East Bay sub-region of the San Francisco Bay Area, on the eastern shore of San Pablo Bay, 25 miles northeast of San Francisco. The population was 9,653 at the 2020 census. The town is named for the rodeos common in the late 19th century. Cattle from the surrounding hills were regularly driven down through the old town to a loading dock on the shoreline of San Pablo Bay for shipment to slaughterhouses, a practice which continued through the early 20th century. The town of Rodeo is served by the Interstate 80 freeway and State Route 4. The Southern Pacific Railroad main line passes through Rodeo. Rodeo has not been a stop on the railroad since the 1950s.
Boston is a town in Boston Township, Wayne County, Indiana, United States. The population was 138 at the 2010 census.
Canyon, formerly known as Sequoya, is an unincorporated community located near the border of Contra Costa and Alameda counties, in the U.S. state of California. It is situated between Oakland and Moraga in the San Francisco Bay Area. The community is named for its location in the upper canyon of San Leandro Creek along the eastern slope of the Berkeley Hills. Canyon lies at an elevation of 1138 feet.
Selby is an unincorporated community in Contra Costa County, in the East Bay region of the San Francisco Bay Area in northern California.
Tormey, formerly known as El Cierbo from the (Spanish word 'Ciervo' for 'Elk', is an unincorporated community in Contra Costa County, California, United States. It is located between Rodeo and Crockett on the edge of the ConocoPhillips oil refinery in Rodeo. It is 6.5 miles west-northwest of Martinez, at an elevation of 20 feet. The community is home to less than a dozen homes and the former offices of the John Swett Unified School District.
Stege, founded in 1876, was an unincorporated community in western Contra Costa County, California, United States. The town has now been annexed and absorbed by the cities of Richmond and El Cerrito, California. It was located on the Southern Pacific Railroad 1.5 miles (2.4 km) south-southeast of downtown Richmond, at an elevation of 23 feet. The site is now located in the area known as the Richmond Annex, at coordinates: 37°55′00″N122°19′38″W.
Valona is an unincorporated community in Contra Costa County, California, United States. It is located in the bluffs above Crockett, 5.5 miles (9 km) west-northwest of Martinez, at an elevation of 62 feet. The similar village of Selby is located nearby. The ZIP Code is 94525. The community is inside area codes 510 and 341.
Kilkare Woods, also known as Kilcare Woods, is a small rural unincorporated community of about 773 people in southern Alameda County, California, near Pleasanton.
Maggie is an unincorporated community in west-central Craig County, Virginia, United States. It lies along Dicks Creek Road.
Marshalltown is an unincorporated community in east-central Craig County, Virginia, United States. It lies along State Route 615, 4.25 miles (6.84 km) northeast of New Castle.
Harlow is an unincorporated community in Benson County, North Dakota, United States. It is located in Butte Valley Township along North Dakota Highway 30. Harlow is assigned Zip code 58346, which it shares with neighboring Leeds.
Rheem, also known as Rheem Valley and Rheem Center, is an unincorporated community in Contra Costa County, California, United States. It is located 7.5 miles (12 km) north-northwest of Danville, at an elevation of 587 feet. It was incorporated into the town of Moraga when that town was incorporated in 1974.
Nichols is an unincorporated community in Contra Costa County, California, United States. It is on the Atchison, Topeka and Santa Fe Railroad 5.5 miles (9 km) west of Pittsburg, at an elevation of 62 feet. The place is named for William H. Nichols, president of the General Chemical Company of New York, which built in 1909 a plant here to produce fertilizer and a number of other chemicals for industrial use. In 1921, General Chemical became a division of Nichols's Allied Chemical, later Allied Corporation.
Cornwall, formerly known as Cornwall Station, was an unincorporated community in Contra Costa County, California, before it was absorbed into the City of Pittsburg. It was located 7.25 miles (11.67 km) east-southeast of Baypoint and 1 mile (1.6 km) south of downtown Pittsburg, at an elevation of 39 feet (12 m) ASL.
Tassajara, a variation of the Spanish word "tasajera", is an unincorporated community in Contra Costa County, California, United States. It is located on the east bank of Tassajara Creek, 6.5 miles (10 km) south-southeast of Mount Diablo, at an elevation of 709 feet. Together with Blackhawk it forms the Blackhawk-Camino Tassajara census designated place (CDP).
Elverta is a census-designated place in Sacramento County, California. It is part of the Sacramento metropolitan area, which includes Sacramento, Arden-Arcade, and Roseville. It is about 20 miles (32 km) from Sacramento, 2.5 miles (4.0 km) from Rio Linda, 6 miles (9.7 km) from Roseville, and 8.0 miles (12.9 km) from Antelope. The population was 5,492 as of the 2010 census.
Thorn Hill is an unincorporated community in rural northeastern Grainger County, Tennessee. It is part of the Morristown Metropolitan Statistical Area which consists of Grainger, Hamblen, and Jefferson counties.
