Tumba is a bimunicipal locality and the seat of Botkyrka Municipality in Stockholm County, Sweden with 37,852 inhabitants in 2010. A part of its statistical urban area, called Rönninge, is in Salem Municipality. The population is 35,311. The Swedish krona banknotes are printed by Crane AB at Tumba Bruk, in Tumba. Tumba is situated half-way between Stockholm and Södertälje and is considered a Stockholm suburb. In Tumba and Rönninge there are stations on the Stockholm commuter rail network.