Waltham is located in Middlesex County. About 60,636 people live here. Between 2010 and 2020, the population grew from 60,632 to 65,218. The region is at 15 meters above sea level. The area covers about 35.6 square kilometers. There are about 2.382 streets in Waltham. The region was founded in 1634. The postal codes are 02451–02454. Waltham is city in Middlesex County, Massachusetts, United States. Among other things, Waltham has public Transport, hotels, restaurants, cafés, supermarkets, clothing Stores, museums, schools, banks, hairdressers, dentists, doctors and pharmacies. More information at
www.city.waltham.ma.us.