Västerås ( VEST-ər-OHSS, US also -AWSS, Swedish: [vɛstɛrˈoːs] (listen)) is a city in central Sweden on the shore of Lake Mälaren in the province of Västmanland, 100 kilometres (62 miles) west of Stockholm. The city had a population of 127,799 at the end of 2019, out of the municipal total of 154,049.Västerås is the seat of Västerås Municipality, the capital of Västmanland County and an episcopal see.