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Los Angeles County, officially the County of Los Angeles (Spanish: Condado de Los Ángeles), and sometimes abbreviated as L.A. County, is the most populous county in the United States, with 9,861,224 residents estimated in 2022. Its population is greater than that of 40 individual U.S. states.
The history of Los Angeles County, California includes of the Tovaangar; the pueblo, missions and ranchos of the Spanish-Mexican era; the histories of the various incorporated cities and unincorporated areas within the borders; and the story of the government of Los Angeles County.
The history of Los Angeles began in 1781 when 44 settlers from central New Spain (modern Mexico) established a permanent settlement in what is now Downtown Los Angeles, as instructed by Spanish Governor of Las Californias, Felipe de Neve, and authorized by Viceroy Antonio María de Bucareli.
- Billion Years Ago
- 65 Million Years Ago
- 24 to 5 Million Years Ago
- O 1.8 Million Years Ago
- Million to 40,000 Years Ago
- About 40,000 to 10,000 Years Ago
- About 10,000 B.C.E.
- About 8,000 B.C.E.
- About 5,000 B.C.E.
- About 4,000 B.C.E.
Rock formations presently found on the present-day eastern slope of the San Gabriel Mountains begin forming beneath an ancient sea. The coastline is considerably east of its present location in what is now Utah and Idaho.
Toward the beginning of the Cenozoic Era, the Los Angeles Basin lies beneath the sea, receiving sediment from large rivers flowing out of the low-lying ancestral Nevadan mountains. Dinosaurs are extinct. The San Gabriel Mountains are beginning to form.
Exhibit of prehistoric ocean over Los Angeles 15 million years ago at Natural History Museum of Los Angeles County. Los Angeles Almanac Photo. What will become the Los Angeles area continues to lie beneath a deep subtropical sea. Before the Pacific tectonic plate upon which it lies begins shifting northward, the future Los Angeles area is located a...
What the Los Angeles area coastline may have resembled about 3-4 million years ago. Photo by Dom Carver, via Pixabay.com. Los Angeles area hills are forced upwards in height to become mountain ranges. The sea level continues to drop.
Large mountain ranges now are present and the Los Angeles basin, forming from accumulating sediment deposits, is slowly rising from the sea, eventually bringing the shoreline, about 100,000 years ago, to about where it exists today. The climate is cooler and moister than present, similar to that of the present-day Monterey Peninsula, with glacier a...
Recreated Sabre-Tooth Cat image displayed at La Brea Tar Pits & Museum. Los Angeles Almanac Photo. The Los Angeles basin is a large grassy, brush-covered and marshy plain, roamed by saber-tooth cats (once referred to as tigersto enhance the image of their ferocity), Harlan's Ground Sloth, Dire Wolves, Western Horses, Ancient Bison, Yesterday's Came...
Prehistoric La Brea Woman imagined in display at La Brea Tar Pits & Museum. Los Angeles Almanac Photo. A young women, who would later become known as La Brea Woman, dies in the La Brea Tar Pits area of Los Angeles. Her remains would later become the oldest known human remains found in the Los Angeles area, more than 10,000 years later, in 1914. Thi...
Ice-age animals named in the period above of 40,000 to 10,000 B.C.E, along with many other concurrent species, are now extinct in Southern California. The Los Angeles basin is covered in grassy plains with scattered strands of junipers and cypress trees, streams, marshes, small lakes and ponds. The climate begins to cool again.
Chumash ancestors engage in sophisticated basketry and make use of asphaltum (tar) for water-proofing. There is increased reliance on hunting and the more sophisticated technological developments such as the throwing stick, knives, drills, and fish hooks. Burials include more artifacts.
Humans appear to have abandoned the Los Angeles area. Modern archeologists speculate that dramatically dropping sea levels turn the marshy, marine life-rich wetlands, important to local human habitation, into “a brackish water lagoon."
Los Angeles County. 1887 to 1909. Los Angeles City Oil Field in 1895 - California's top-producing oil field. Photo from Two Years of Progress in Los Angeles City and County, 1894-1895 issued by the L.A. Chamber of Commerce. Courtesy of the British Library. Oil and Real Estate Boom and a Proliferation of New Cities Begins. 1887.
Los Angeles County, one of California’s original 27 counties, was established on Feb. 18, 1850. It is one of the nation’s largest counties with 4,084 square miles, and has the largest population of any county in the nation – nearly 10 million residents who account for approximately 27 percent of California’s population.
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4 days ago · Los Angeles, city, seat of Los Angeles county, southern California, U.S. It is the second most populous city and metropolitan area in the U.S. Home of the American entertainment industry, the city is also known for its pleasant weather, urban sprawl, traffic, beaches, and ethnic and racial diversity.
