Miami-Dade County (formerly known as "Dade County" and many times referred to as simply "Miami" or "Dade") is a county in the southeastern part of the state of Florida. The United States Census Bureau estimates that in 2006, about 2,402,208 people lived in the county. That is more than any other county in Florida. Among all United States counties, it is in eighth place. The county seat is the city of Miami. It is the largest county by population in Florida.