66.63% of Kapuas Hulu Regency's population in 2023 is aged 15-59 years.

The majority of the population in this region, or approximately 66.63%, are of productive age, namely between 15-59 years old, totaling 180,960. According to a 2023 publication by the Central Bureau of Statistics (BPS), the number reached 180,960. The remaining population consists of those aged 0-14 years (children) at approximately 24.8% and 8.57% are in the elderly group aged over 60 years.

The population of Kapuas Hulu Regency was recorded at 268,840 as of June 2023. This figure increased compared to December 2021 and is higher than in December 2020. Compared to the previous five years, the Compound Annual Growth Rate (CAGR) of this region is recorded as lower. The growth over the last five years was recorded at 0.75%.

Based on the total population of West Kalimantan Province, this regency ranks 13th, while when grouped by island, this regency ranks 30th.

The following is the population by age in Kapuas Hulu Regency in June 2023, sourced from a publication by the Central Bureau of Statistics (BPS):

* Age 0-4 years: 18,490 (6.88%)
* Age 5-9 years: 23,590 (8.78%)
* Age 10-14 years: 25,270 (9.4%)
* Age 15-19 years: 21,910 (8.15%)
* Age 20-24 years: 25,260 (9.4%)
* Age 25-29 years: 21,550 (8.02%)
* Age 30-34 years: 20,750 (7.72%)
* Age 35-39 years: 21,640 (8.05%)
* Age 40-44 years: 22,320 (8.3%)
* Age 45-49 years: 18,930 (7.04%)
* Age 50-54 years: 16,360 (6.09%)
* Age 55-59 years: 12,230 (4.55%)
* Age 60-64 years: 9,380 (3.49%)
* Age 65-69 years: 6,200 (2.31%)
* Age 70-74 years: 3,750 (1.39%)
* Age 75 years and over: 3,950 (1.47%)