Los Angeles County is an area in California with a population of 10,179,832. Los Angeles has grown 7.4% since the 2000. According to the most recent United States Census, Los Angeles County in California is the largest county in the nation, with a total population of 10,150,558 – an increase of 3.5% since 2010. Los Angeles, California is the 2nd largest city in the US. How quickly is Los Angeles growing? mi. Los Angeles County had the largest Hispanic/Latino population of any county in the United States, followed by Harris County, Texas, at 2.0 million and Miami-Dade County, Florida, at 1.8 million. The government's data, released April 18, shows the population in the County of Los Angeles decreased by 13,241 residents as of July 1, 2018, to 10.104 million people. mi. The total number of households is 3,332,058 with 3 people per household on average.The median age of the current population is 38 with 3,748,106 people being married and 4,750,805 being single. Water area: 691.5 sq. The current population of Los Angeles (3,979,576) is it's peak population. Note: Santa Catalina & San Clemente Islands are part of Los Angeles County (71.96 and 57.17 square miles respectively) According to the most recent population estimates available from the U.S. Census Bureau for Los Angeles County (July 2017) and individual states, the populations of … What was the peak population of Los Angeles? Population in households in Los Angeles County ; Total Population: 9,646,924; Male Population: 4,741,026; Under 5 years: 329,734; 5 to 9 years: 323,197; 10 to 14 years: 4.4% Percentage increase in the Hispanic/Latino population, between 2010 and 2018. Chicago's Cook County follows and, although very large in its own right, is half the size of Los Angeles County with 5,231,356 residents. There are 5,016,476 male residents living in Los Angeles County and 5,163,356 female residents. Population density: 2503 people per square mile (very high). Land area: 4061 sq. References "Cities within the County of Los Angeles" (PDF).Chief Executive Office - Los Angeles County "Census 2010: Table 3A — Total Population by Race (Hispanic exclusive) and Hispanic or Latino: 2010". July 1, 2019 Population Estimates, prepared for LA County ISD, released 2020/05/26: Service Planning Areas: SPA 1 - Antelope Valley SPA 2 - San Fernando SPA 3 - San Gabriel SPA 4 - Metro SPA 5 - West SPA 6 - South SPA 7 - East SPA 8 - South Bay: Author: Aida Angelescu Created Date: Population Density. Select one of L.A.'s 272 neighborhoods to see where it ranks Mapping L.A. is the Los Angeles Times’ resource for crime, neighborhoods, demographics and schools in Los Angeles County.