Wetumpka is a city in Elmore County, Alabama, United States. According to 2000 US census, there are 5,726 people living there. The city is the county seat of Elmore County. It is the third fastest growing county in the state. Together with Montgomery, Prattville, Millbrook, and Tallassee the city is considered part of the Montgomery Metropolitan Area, or River Region. There are approximately 346,578 people living in the region. 