Los Angeles County, officially the County of Los Angeles, 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. Comprising 88 incorporated cities and many unincorporated areas within a total area of 4,083 square miles (10,570 km2), it is home to more than a quarter of Californians and is one of the most ethnically diverse U.S. counties. The county's seat, Los Angeles, is the second most populous city in the United States, with 3,822,238 residents estimated in 2022.
San Luis Obispo County, officially the County of San Luis Obispo, is a county on the Central Coast of California. As of the 2020 census, the population was 282,424. The county seat is San Luis Obispo.
The 2000 United States census, conducted by the Census Bureau, determined the resident population of the United States on April 1, 2000, to be 281,421,906, an increase of 13.2 percent over the 248,709,873 people enumerated during the 1990 census. This was the twenty-second federal census and was at the time the largest civilly administered peacetime effort in the United States.
The 1890 United States census was taken beginning June 2, 1890. The census determined the resident population of the United States to be 62,979,766, an increase of 25.5 percent over the 50,189,209 persons enumerated during the 1880 census. The data reported that the distribution of the population had resulted in the disappearance of the American frontier.
The 1850 United States census was the seventh decennial United States Census Conducted by the Census Office, it determined the resident population of the United States to be 23,191,876—an increase of 35.9 percent over the 17,069,453 persons enumerated during the 1840 census. The total population included 3,204,313 slaves.
The 1980 United States census, conducted by the Census Bureau, determined the resident population of the United States to be 226,545,805, an increase of 11.4% over the 203,184,772 persons enumerated during the 1970 census. It was the first census in which a state—California—recorded a population of 20 million people, as well as the first in which all states recorded populations of over 400,000.
The 1860 United States census was the eighth census conducted in the United States starting June 1, 1860, and lasting five months. It determined the population of the United States to be 31,443,322 in 33 states and 10 organized territories. This was an increase of 35.4 percent over the 23,069,876 persons enumerated during the 1850 census. The total population included 3,953,762 slaves.
The 1880 United States census, conducted by the Census Office during June 1880, was the tenth United States census. It was the first time that women were permitted to be enumerators. The Superintendent of the Census was Francis Amasa Walker. This was the first census in which a city—New York City—recorded a population of over one million, and the first census in which the 20 most populated cities all recorded over 100,000 residents.
The 1900 United States census, conducted by the Census Office on June 1, 1900, determined the resident population of the United States to be 76,212,168, an increase of 21.01% from the 62,979,766 persons enumerated during the 1890 census. It was the last census to be conducted before the founding of the permanent United States Census Bureau.
The 1910 United States census, conducted by the Census Bureau on April 15, 1910, determined the resident population of the United States to be 92,228,496, an increase of 21 percent over the 76,212,168 persons enumerated during the 1900 census. The 1910 census switched from a portrait page orientation to a landscape orientation.
The 1920 United States census, conducted by the Census Bureau during one month from January 5, 1920, determined the resident population of the United States to be 106,021,537, an increase of 15.0 percent over the 92,228,496 persons enumerated during the 1910 census.
The 1930 United States census, conducted by the Census Bureau one month from April 1, 1930, determined the resident population of the United States to be 122,775,046, an increase of 13.7 percent over the 106,021,537 persons enumerated during the 1920 census.
The 1940 United States census, conducted by the Census Bureau, determined the resident population of the United States to be 132,164,569, an increase of 7.6 percent over the 1930 population of 122,775,046 people. The census date of record was April 1, 1940.
The 1950 United States census, conducted by the Census Bureau, determined the resident population of the United States to be 158,804,396, an increase of 14.5 percent over the 131,669,275 persons enumerated during the 1940 census.
The 1960 United States census, conducted by the Census Bureau, determined the resident population of the United States to be 179,323,175, an increase of 19 percent over the 151,325,798 persons enumerated during the 1950 census. This was the first census in which all states recorded a population of over 200,000. This census's data determined the electoral votes for the 1964 and 1968 presidential elections. This was also the last census in which New York was the most populous state.
The 1970 United States census, conducted by the Census Bureau, determined the resident population of the United States to be 203,392,031, an increase of 13.4 percent over the 179,323,175 persons enumerated during the 1960 census.
California is the most populated U.S. state, with an estimated population of 38.9 million as of 2023. It has people from a wide variety of ethnic, racial, national, and religious backgrounds.
Black flight is a term applied to the migration of African Americans from predominantly black or mixed inner-city areas in the United States to suburbs and newly constructed homes on the outer edges of cities. While more attention has been paid to this since the 1990s, the movement of black people to the suburbs has been underway for some time, with nine million people having migrated from 1960 to 2000. Their goals have been similar to those of the white middle class, whose out-migration was called white flight: newer housing, better schools for their children, and attractive environments. From 1990 to 2000, the percentage of African Americans who lived in the suburbs increased to a total of 39 percent, rising 5 percentage points in that decade. Most who moved to the suburbs after World War II were middle class.
Hispanic and Latino Californians are residents of the state of California who are of Hispanic or Latino ancestry. As of the 2020 U.S. Census, Hispanics and Latinos of any race were 39.4% of the state's population, making it the largest ethnicity in California.
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