Eskilstuna is a city in Sweden that serves as the seat of the Eskilstuna Municipality within Södermanland County. Geographically, the town is situated on the River Eskilstunaån, which provides a connection between Lake Hjälmaren and Lake Mälaren.
As of 2023, the total population of Eskilstuna municipality was 107,806 inhabitants, while the city itself had 69,948 residents in 2020. The area is notable for having a large Sweden Finn population.