Indianapolis (pronounced /ˌɪndiəˈnæpəlɪs/) is the capital city of the U.S. state of Indiana, and the county seat of Marion County, Indiana. The 2000 Census counted the city's population (excluding included towns) at 781,870. It is Indiana's most populous city and is the 13th largest city in the U.S., the third largest city in the Midwest, and the second most populous Capital in the U.S., behind Phoenix, Arizona.