The majority of Langsa City's population in 2024 will be of working age.

In 2024, the majority of Langsa City's population was in the productive age group (15-59 years old), totaling 120,320 or 65.89% of the total population. Children (0-14 years old) and the elderly (over 60 years old) comprised 25.01% and 9.1%, respectively.

The population of Langsa City was recorded at 182,620 as of 2024. This latest data shows a population decrease. Compared to the previous five years, the Compound Annual Growth Rate (CAGR) of this region was lower. The five-year growth rate was recorded at 0.93%.

Compared to other regencies/cities in Aceh Province, Langsa City's population ranks 13th. When grouped by island, this regency/city ranks 114th.

The following is the population by age in Langsa City in June 2024, sourced from the Central Bureau of Statistics (BPS) publication:

* Age 0-4 years: 12,590 (6.89%)
* Age 5-9 years: 16,300 (8.93%)
* Age 10-14 years: 16,790 (9.19%)
* Age 15-19 years: 16,620 (9.1%)

* Age 20-24 years: 15,990 (8.76%)
* Age 25-29 years: 14,900 (8.16%)
* Age 30-34 years: 13,920 (7.62%)
* Age 35-39 years: 14,350 (7.86%)
* Age 40-44 years: 13,820 (7.57%)
* Age 45-49 years: 11,410 (6.25%)
* Age 50-54 years: 10,600 (5.8%)
* Age 55-59 years: 8,710 (4.77%)
* Age 60-64 years: 6,740 (3.69%)
* Age 65-69 years: 4,550 (2.49%)
* Age 70-74 years: 2,690 (1.47%)
* Age 75 years and over: 2,640 (1.44%)