Jacksonville is a city in Duval County, Florida. As of the 2014 census, the city population was 853,382. According to the United States Census Bureau, the city has a total area of 757.7 square miles. An elevation is 12 feet (3.65 m) above sea level. The population density was 1,126 people per square mile. The median age was 35.7 years (Florida state median age was 41.8 years)…@Miami is a city in Miami-Dade County, Florida. As of the 2014 census, the city population was 430,332. According to the United States Census Bureau, the city has a total area of 35.7 square miles. An elevation is 11 feet (3.35 m) above sea level. The population density was 12,063 people per square mile. The median age was 40.4 years (Florida state median age was 41.8 years). For every 100 females there were 96 males.@Tampa is a city in Hillsborough County, Florida. As of the 2014 census, the city population was 358,699. According to the United States Census Bureau, the city has a total area of 112.1 square miles. An elevation is 48 feet (14.63 m) above sea level. The population density was 3,201 people per square mile. The median age was 35.3 years (Florida state median age was 41.8 years)…@Orlando is a city in Orange County, Florida. As of the 2014 census, the city population was 262,372. According to the United States Census Bureau, the city has a total area of 93.5 square miles. An elevation is 106 feet (32.30 m) above sea level. The population density was 2,806 people per square mile. The median age was 33.1 years (Florida state median age was 41.8 years). For every 100 females there were 94 males.@Hialeah is a city in Miami-Dade County, Florida. As of the 2014 census, the city population was 235,563. According to the United States Census Bureau, the city has a total area of 19.2 square miles. An elevation is 7 feet (2.13 m) above sea level. The population density was 12,243 people per square mile. The median age was 43 years (Florida state median age was 41.8 years). For every 100 females there were 89 males.