10.5% of the population in Barito Utara Regency is Protestant.

The Protestant population in Barito Utara Regency as of December 31, 2023, was recorded at 16,805 individuals. This figure represents a 242-person increase compared to the previous year's reported figure of 16,563.

According to data from the Directorate General of Population and Civil Registration (Ditjen Dukcapil) of the Ministry of Home Affairs, the proportion of Protestants in this regency/city reached 10.5 percent of the total population in 2023, which numbered 159,740.

In terms of its distribution relative to the population of each region in Central Kalimantan, the proportion of Protestants in Barito Utara Regency ranks 11th.

The following is a list of the population of Central Kalimantan by religion in 2023:

* Islam: 117,163 (73.35%)
* Hindu: 16,814 (10.53%)
* Protestant: 16,805 (10.52%)
* Catholic: 8,865 (5.55%)
* Buddhist: 43 (0.03%)
* Indigenous Beliefs: 40 (0.03%)
* Confucianism: 5 (0.0%)

Other regencies/cities in Central Kalimantan with the largest Protestant populations, in descending order, are: Gunung Mas Regency (85,584), Palangkaraya City (78,575), Kapuas Regency (48,396), Barito Timur Regency (42,326), Katingan Regency (33,689), Pulang Pisau Regency (27,533), Kota Waringin Timur Regency (26,524), Barito Selatan Regency (25,164), Lamandau Regency (25,098), and Murung Raya Regency (20,396).