what county is berlin wi
New Berlin is a city in Waukesha County, Wisconsin, United States. The population was 39,584 at the 2010 census, making it the second largest community in Waukesha County after the city of Waukesha. New Berlin is situated on the eastern border of Waukesha County. Interstate 94 is located immediately north of the city, and Interstate 43 passes through it.