The city proper, which covers about 469 square miles (1,210 km 2), is the seat of the larger Los Angeles County, the most populated county in the country. Los Angeles is the center of the Los Angeles metropolitan area, with 13.1 million residents the second largest in the United States after New York City.
The following table lists the 311 incorporated places in the United States with a population of at least 100,000 on July 1, 2017, as estimated by the United States Census Bureau. A city is displayed in bold if it is a state or federal capital, and in italics if it is the most populous city in the state.
Philadelphia is Pennsylvania's largest city, the second-largest city on the US's East Coast and the 5th most populous city in the US. It also has the designation of the only consolidated city-county in the state with a population that was 1,526,006 according to the last official census in 2010.
Phoenix is the largest city and capital of Arizona, and the 6th most populous city in the United States. It's also the most populous state capital and the center of the Phoenix metropolitan area (or the Valley of the Sun), which is home to over 4.5 million people in 2016.
San Diego has a population density of 4,003 people per square mile in the city proper. The metropolitan population is much larger, however, and is estimated at 3.1 million people. This is the third-largest metro area after Los Angeles and San Francisco.
Phoenix, the capital of Arizona, is the most populated city in the state with 1,445,632 people. This size also makes Phoenix the most populated state capital in the country. Residents here live in a subtropical desert climate and are surrounded by the Sonoran Desert.