62.26% of East Sumba Regency's population in 2023 was aged 15-59 years.

In 2023, the majority of the population of East Sumba Regency was dominated by the productive age group (aged 15-59 years), totaling 165,530 or 62.26% of the total population. Meanwhile, children (aged 0-14 years) and the elderly (over 60 years) accounted for 28.09% and 9.66%, respectively.

The population of East Sumba Regency was recorded at 262,880 people in 2023. This figure has increased. Over the past five years, the Compound Annual Growth Rate (CAGR) of the population in this region was 0.56%. This growth is lower than the growth in the previous five years, which was recorded at 1.02%.

Compared to other regencies/cities in East Nusa Tenggara province, the population of East Sumba Regency ranks 12th, while by island, this regency/city ranks 26th.

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

• Age 0-4 years: 17,120 people (6.51%)


• Age 5-9 years: 27,810 people (10.58%)


• Age 10-14 years: 29,740 people (11.31%)


• Age 15-19 years: 23,660 people (9%)
• Age 20-24 years: 24,780 people (9.43%)


• Age 25-29 years: 22,640 people (8.61%)


• Age 30-34 years: 20,140 people (7.66%)


• Age 35-39 years: 18,950 people (7.21%)


• Age 40-44 years: 17,140 people (6.52%)


• Age 45-49 years: 14,920 people (5.67%)


• Age 50-54 years: 12,640 people (4.81%)


• Age 55-59 years: 10,650 people (4.05%)


• Age 60-64 years: 8,490 people (3.23%)


• Age 65-69 years: 6,830 people (2.6%)


• Age 70-74 years: 4,620 people (1.76%)


• Age 75 years and over: 5,730 people (2.18%)