Kostelec nad Vltavou is a municipality and village in PÃÂsek District in the South Bohemian Region of the Czech Republic. It has about 400 inhabitants.
Kostelec nad Vltavou lies approximately north of PÃÂsek, north of ÃÂeské BudÃÂjovice, and south of Prague.
Kostelec nad Vltavou consists of five municipal parts (in brackets population according to the 2021 census):