Geography[ edit ] According to the U. Some of the expansion of these suburban areas was clearly attributable to white flight from decaying areas of Alameda County and the consolidated city-county of San Franciscobut much was due to the postwar baby boom of the era creating demand for three- and four-bedroom houses with large yards that were unaffordable or unavailable in the established bayside cities.
He sent letters to influential people in the eastern United States extolling the climate, soil and potential for agriculture in California, with the deliberate purpose of encouraging Americans to immigrate to California and lead to its becoming part of the United States.
He also invited them to stay on his ranch until they could get settled, so the Rancho Los Meganos became the terminus of the California trail. The county's Spanish language name means opposite coast, because of its location opposite San Francisco, in an easterly direction, on San Francisco Bay. His letters were published in newspapers throughout the East, and started the first wagon trains rolling toward California.
The land titles in Contra Costa County may be traced to multiple subdivisions of a few original land grants.
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El Sobrante The smallest unit was one square league, or about seven square miles, or 4, acres The central county cities have in turn spawned their own suburbs within the county, extending east along the county's estuarine north shore; with the older development areas of Bay Point and Pittsburg being augmented by extensive development in AntiochOakleyand Brentwood. Contra Costa County was one of the original 27 counties of California, created in at the time of statehood.
By the Mission Indian populations had largely succumbed to disease and abuse and only numbered a few thousand. Additionally, a large Naval Weapons Depot and munitions ship loading facilities at Port Chicago remain active to this day, but with the inland storage facilities recently declared surplus, extensive redevelopment is being planned for this last large central-county tract.
Later postwar period — [ edit ] A number of large companies followed their employees to the suburbs, filling large business parks.
Diablo County, but the name was changed prior to incorporation as a county. The Pacheco family settled at the Rancho in between the Pacheco shipping port townsite and Clayton area, and including much of Lime Ridge.
Locally a large family required roughly head of cattle and two square leagues of land fourteen square miles to live comfortably.
These slip-strike faults and the Diablo thrust fault near Danville are all considered capable of significantly destructive earthquakes and many lesser related faults are present in the area that cross critical infrastructure such as water, natural gas, and petroleum product pipelines, roads, highways, railroads, and BART rail transit. A few mansions from the more prosperous farms have been preserved as museums and cultural centers and one of the more rustic examples has been preserved as a working demonstration ranch, Borges Ranch.
The county was originally to be called Mt. National protected areas[ edit ]. The establishment of a large, prosperous population in turn fostered the development of large shopping centers and created demand for an extensive supporting infrastructure including roads, schools, libraries, police, firefighting, water, sewage, and flood control.
After some minor skirmishes California was under U. Southern portions of the county's territory, including all of the bayside portions opposite San Francisco and northern portions of Santa Clara Countywere given up to form Alameda County effective March 25, In California had a non-Indian population of overBear Flag Republic and statehood[ edit ] Main article: The boundary lines were designated with stone markers.
The effects of the housing value crash — have varied widely throughout the county.
Fences were not required and were forbidden where they might interfere with roads or trails. Values of houses in prosperous areas with good schools have declined only modestly in value, while houses recently built in outlying suburbs in the eastern part of the county have experienced severe reductions in value, accelerated by high unemployment and consequent mortgage foreclosures, owner strategic walk-aways, and the too-rapid conversion of neighborhoods from owner-occupancy to rentals.
California's state Census gives 31, Indian residents; but this is an under-count since there was little incentive and much difficulty in getting it more correct.
Port Chicago was bought out and demolished by the Federal Government to form a safety zone near the Naval Weapons Station loading docks. The law required the construction of a house within a year.
By the over, population and rapidly growing California population gain due to the California gold rush and the large amount of gold being exported east gave California enough clout to choose its own boundaries, write its own constitution and be admitted to the Union as a free state in without going through territorial status as required for most other states.
Two Los Meganos Ranchos were granted, later differentiated as Rancho Los Meganosthree leagues or at least 13, acres The grantee's family names live on in a few city and town names such as MartinezPacheco and Moraga and in the names of streets, residential subdivisions, and business parks. Bear Flag Revolt The exclusive land ownership in California by the approximate 9,  Hispanics in California would soon end.