In the California Route Marker Program, which designates county routes in California, only two highways exist in the "R" zone, which encompasses Riverside...

County routes in the U.S. state of California are controlled and maintained by the respective counties in which they are located. However, they are generally...

California. At 656 miles (1,056 km), it is the longest state route in California, and the second-longest in the US after Montana Highway 200. SR 1 has several portions...

98°W / 33.73; -115.98 Riverside County is a county located in the southern portion of the U.S. state of California. As of the 2020 census, the population...

both Route 7 and Route 710. The California Streets and Highways Code defines Route 710 as follows: 622. Route 710 is from Route 1 to Route 210 in Pasadena...

Southern California, United States. As of the 2020 census, the population was 3,186,989, making it the third-most-populous county in California, the sixth-most-populous...

Alameda County (/ˌæləˈmiːdə/ AL-ə-MEE-də) is a county located in the U.S. state of California. As of the 2020 census, the population was 1,682,353, making...

Santa Clara County, officially the County of Santa Clara, is the sixth-most populous county in the U.S. state of California, with a population of 1,936...

San Mateo County (/ˌsæn məˈteɪ.oʊ/ SAN mə-TAY-oh), officially the County of San Mateo, is a county in the U.S. state of California. As of the 2020 census...

Yolo County (/ˈjoʊloʊ/ ; Wintun: Yo-loy), officially the County of Yolo, is a county located in the northern portion of the U.S. state of California. Yolo...