25.64% of North Bengkulu Regency's population in 2023 was aged 0-14 years.

The majority of the population in this region, or about 64.37%, are of working age, namely those aged 15-59 years, totaling 196,160. According to a 2023 publication by the Central Bureau of Statistics (BPS), the number reached 196,160. The remaining population consists of those aged 0-14 years (children) at approximately 25.64% and 9.98% are in the elderly group aged over 60 years.

The population of Bengkulu Utara Regency was recorded at 304,720 as of December 2023. This figure increased compared to June 2023 and is higher than in December 2021. 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 0.02%.

Compared to other regencies/cities in Bengkulu province, the population of Bengkulu Utara Regency ranks second among the ten other regencies/cities. When grouped by island, this regency/city ranks 80th.

The following is the population by age in Bengkulu Utara Regency as of December 2023, sourced from a publication by the Central Bureau of Statistics (BPS):

* Age 0-4 years: 22,840 (7.5%)
* Age 5-9 years: 26,710 (8.76%)
* Age 10-14 years: 28,590 (9.38%)
* Age 15-19 years: 23,140 (7.59%)
* Age 20-24 years: 25,670 (8.42%)
* Age 25-29 years: 22,830 (7.49%)
* Age 30-34 years: 23,160 (7.6%)
* Age 35-39 years: 24,250 (7.96%)
* Age 40-44 years: 25,140 (8.25%)
* Age 45-49 years: 20,490 (6.72%)
* Age 50-54 years: 17,360 (5.7%)
* Age 55-59 years: 14,120 (4.63%)
* Age 60-64 years: 11,760 (3.86%)
* Age 65-69 years: 7,990 (2.62%)
* Age 70-74 years: 5,040 (1.66%)
* Age 75 years and over: 5,630 (1.85%)