 It consists of the villages of Niederhelfenschwil, Lenggenwil and Schloss Zuckenriet as well as the hamlets of Enkhüseren, Dietenwil and Dägetschwil.The blazon of the municipal coat of arms is "Azure between a Pall Or letters N, L and Z"

Niederhelfenschwil has a population (as of ) of ., about 5.6% of the population was made up of foreign nationals.