Henån is a locality and the seat of Orust Municipality, Västra Götaland County, Sweden with 1,816 inhabitants in 2010. Henån is home to approximately 2,000 permanent year-round residents with a significant increase of summer residents who come from the nearby towns and cities to stay in their summer cottages, which frequently are passed down f…Henån is a locality and the seat of Orust Municipality, Västra Götaland County, Sweden with 1,816 inhabitants in 2010. Henån is home to approximately 2,000 permanent year-round residents with a significant increase of summer residents who come from the nearby towns and cities to stay in their summer cottages, which frequently are passed down for generations.