97% of Bukit Tinggi City's population is Muslim.

The Muslim population in Bukittinggi City, as of December 31, 2023, was recorded at 134,940 people. This is an increase of 6,580 individuals compared to the previous year, which reported 128,360 people.

According to data from the Directorate General of Population and Civil Registration (Ditjen Dukcapil) of the Ministry of Home Affairs, the proportion of the Muslim population in this district/city reached 97 percent of the total population in 2023, which numbered 138,530 people.

Based on the distribution across the districts/cities in West Sumatra, the proportion of the Muslim population in Bukittinggi City ranks 14th.

Meanwhile, the population of West Sumatra by religion in 2023 is as follows:
* Islam 134,937 (97.4%)
* Protestant 2,292 (1.65%)
* Catholic 1,157 (0.84%)
* Buddhist 143 (0.1%)
* Hindu 5 (0.0%)
* Confucian 0 (0.0%)
* Indigenous Beliefs 0 (0.0%)

Other districts/cities in West Sumatra with the largest Muslim populations, in descending order, are: Padang City 905,479 people, Pesisir Selatan Regency 527,261 people, Agam Regency 525,843 people, Padang Pariaman Regency 453,093 people, Pasaman Barat Regency 434,780 people, Solok Regency 408,071 people, Lima Puluh Kota Regency 396,810 people, Tanah Datar Regency 380,278 people, Pasaman Regency 307,813 people, and Sawahlunto/Sijunjung Regency 243,088 people.