Västerås County (Oldenburg Sweden)

Västerås County (Swedish: Västerås län) is a county in Sweden. It has an area of 5 146 square kilometers and a population of 252 819 residents. Västerås is the capital of the county.

Västerås County is a constituency in the elections to the house of commoners.

Governor of Västerås County is Ingemar af Skogöö.