Originally it was made up of three village; Heiligenschwendi, Schwendihaus and Hünibach. By 1782 Heiligenschwendi had a population of 109, Schwendihaus had 79 and Hünibach had 84. Heiligenschwendi and Schwendihaus shared a school house between the two communities and gradually drew closer together. In contrast, Hünibach had its own school and was slowly moving away from the other two. When the political municipality of Heiligenschwendi was formed it included all three communities but separate Burgergemeinden. In 1884 the "Seestrasse" (Lake road) opened, connecting Hünibach and the rest of Heiligenschwendi with Thun. When a station on the Steffisburg-Interlaken tram opened in Hünibach in 1913, the community became increasingly attractive to commuters. All three communities grew, but Hünibach grew disproportionately. In 1950, Hünibach had a population of 369 and was politically much closer to Hilterfingen than the rest of Heiligenschwendi. After prolonged negotiations, in 1958, it left Heiligenschwendi and joined Hilterfingen.