 Welda has an area of 9.22 km² and a population of 863.The village of Welda is the southernmost point of Kreis Höxter (within the administrative region of Detmold) near North Rhine-Westphalia's border with the Waldeck-Frankenberg district of the federal state of Hessen.It lies between the towns of Warburg and Volkmarsen on a line between the cities of Paderborn (40 km) and Kassel (35 km).