From the 2000 census, 603 or 54.3% are Roman Catholic, while 398 or 35.8% belonged to the Swiss Reformed Church.
 Of the rest of the population, there are 3 individuals (or about 0.27% of the population) who belong to the Christian Catholic faith, there are 3 individuals (or about 0.27% of the population) who belong to the Orthodox Church, and there are 11 individuals (or about 0.99% of the population) who belong to another Christian church.
 There are 19 (or about 1.71% of the population) who are Islamic.
 There are 1 individuals (or about 0.09% of the population) who belong to another church (not listed on the census), 37 (or about 3.33% of the population) belong to no church, are agnostic or atheist, and 36 individuals (or about 3.24% of the population) did not answer the question.
From the 2000 census, 603 or 54.3% are Roman Catholic, while 398 or 35.8% belonged to the Swiss Reformed Church.  Of the rest of the population, there are 3 individuals (or about 0.27% of the population) who belong to the Christian Catholic faith, there are 3 individuals (or about 0.27% of the population) who belong to the Orthodox Church, and there are 11 individuals (or about 0.99% of the population) who belong to another Christian church.  There are 19 (or about 1.71% of the population) who are Islamic.  There are 1 individuals (or about 0.09% of the population) who belong to another church (not listed on the census), 37 (or about 3.33% of the population) belong to no church, are agnostic or atheist, and 36 individuals (or about 3.24% of the population) did not answer the question.
Ganterschwil