0.03% of the population in Karo Regency practices Hinduism.

The Hindu population in Karo Regency, as of December 31, 2023, was recorded at 108 individuals. This number is down by 22 individuals compared to the previous year, which reported 130 individuals.

According to data from the Directorate General of Population and Civil Registration (Ditjen Dukcapil) of the Ministry of Home Affairs, the proportion of the Hindu population in this regency/city reached 0.03 percent of the total population in 2024, which amounted to 418,700 individuals.

Considering its distribution relative to the population of each area in North Sumatra, the proportion of the Hindu population in Karo Regency ranks tenth.

Meanwhile, the population of North Sumatra by religion in 2023 was as follows:

* Protestant: 239,580 (57.22%)
* Muslim: 112,211 (26.8%)
* Catholic: 61,454 (14.68%)
* Buddhist: 1,530 (0.37%)
* Indigenous Beliefs: 454 (0.11%)
* Hindu: 108 (0.03%)
* Confucian: 5 (0.0%)

Compared to other regions in North Sumatra, the number of Hindus in this regency/city ranks tenth out of the 33 regencies/cities in North Sumatra province.

Other areas with the highest number of Hindus in North Sumatra province are: Medan City (10,826), Deli Serdang Regency (2,808), Binjai City (722), Langkat Regency (356), Pematang Siantar City (278), Tebing Tinggi City (227), Simalungun Regency (192), Serdang Bedagai Regency (170), Asahan Regency (109), and Tanjung Balai City (32).