West Kalimantan's population reached 5.56 million, with 12% residing in Pontianak City at the end of 2023.

Based on population data from the Directorate General of Population and Civil Registration (Dukcapil) of the Ministry of Home Affairs, the population of West Kalimantan was 5.56 million at the end of 2023.

Pontianak City is the most populous area in West Kalimantan, with 679,820 inhabitants (12.23%) of the total population.

This is followed by Sambas Regency with 645,600 inhabitants (11.62%), Kubu Raya Regency with 625,070 inhabitants (11.25%), and Ketapang Regency with 578,980 inhabitants (10.42%).

Meanwhile, Kayong Utara Regency is the regency/city with the smallest population, at only 127,960 inhabitants (2.3%).

Administratively, West Kalimantan is divided into 2 cities and 12 regencies, with 6 districts comprising 29 urban villages.

Based on marital status, 46.06% of West Kalimantan's population is married, while 48.61% are unmarried. The population with divorced and widowed statuses reached 1.51% and 3.82%, respectively.

The following is a list of the 14 regencies/cities in West Kalimantan according to Dukcapil at the end of 2023.

1. Pontianak City: 679,820 inhabitants (12.23%)
2. Sambas Regency: 645,600 inhabitants (11.62%)
3. Kubu Raya Regency: 625,070 inhabitants (11.25%)
4. Ketapang Regency: 578,980 inhabitants (10.42%)
5. Sanggau Regency: 494,040 inhabitants (8.89%)
6. Sintang Regency: 440,610 inhabitants (7.93%)
7. Landak Regency: 409,570 inhabitants (7.37%)
8. Mempawah Regency: 311,570 inhabitants (5.61%)
9. Bengkayang Regency: 293,100 inhabitants (5.27%)
10. Kapuas Hulu Regency: 271,580 inhabitants (4.89%)
11. Singkawang City: 244,710 inhabitants (4.4%)
12. Sekadau Regency: 221,330 inhabitants (3.98%)
13. Melawi Regency: 213,320 inhabitants (3.84%)
14. Kayong Utara Regency: 127,960 inhabitants (2.3%)