The majority of Magelang Regency's population in 2023 is of working age.

The majority of the population in this region, or approximately 63.71%, are of productive age, namely 15-59 years old, totaling 848,520. According to a 2023 publication by the Central Bureau of Statistics (BPS), the number reached 848,520. The remaining population consists of those aged 0-14 years (children) at approximately 21.35% and 14.94% are in the elderly group aged over 60 years.

The population of Magelang Regency was recorded at 1.33 million in 2023. This figure has continued to rise over the past 23 years. Compared to the previous five years, the region's Compound Annual Growth Rate (CAGR) is recorded as higher. The growth over the last five years was recorded at 0.8%.

Compared to other districts/cities in Central Java province, Magelang Regency's population ranks tenth, while by island, this district/city ranks 46th.

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

* Age 0-4 years: 83,960 (6.3%)
* Age 5-9 years: 97,170 (7.3%)
* Age 10-14 years: 103,280 (7.75%)
* Age 15-19 years: 91,260 (6.85%)

* Age 20-24 years: 104,310 (7.83%)
* Age 25-29 years: 101,650 (7.63%)
* Age 30-34 years: 93,420 (7.01%)
* Age 35-39 years: 90,690 (6.81%)
* Age 40-44 years: 99,000 (7.43%)
* Age 45-49 years: 93,550 (7.02%)
* Age 50-54 years: 91,380 (6.86%)
* Age 55-59 years: 83,260 (6.25%)
* Age 60-64 years: 69,190 (5.2%)
* Age 65-69 years: 53,050 (3.98%)
* Age 70-74 years: 34,760 (2.61%)
* Age 75 years and over: 41,990 (3.15%)