Tangerang City's population was 1.89 million in 2020.

The 2020 Population Census reported that the population of Tangerang City totaled 1.89 million. Of this number, 959,010 (50.59%) were male and 936,480 were female.

Cipondoh was recorded as the sub-district with the largest population, reaching 248,210 (13.09%) of the total population. Meanwhile, Benda had the smallest population, at only 83,530 (4.41%) of the total population.

Based on age group, 1.34 million (70.66%) of the population bordering DKI Jakarta were of productive age (15-64 years). The remaining 556,210 (29.34%) were of non-productive age. This comprised 476,950 (25.16%) in the non-productive age group (0-14 years) and 79,270 (4.18%) in the unproductive age group (65 years and older).

Tangerang City covers an area of 165.44 square kilometers and is administratively divided into 13 sub-districts encompassing 104 villages/urban villages.

The population density of Tangerang City reached 11,519.21 people per square kilometer in 2020. Ciledug Sub-district was the most densely populated area, at 18,717.33 people per square kilometer, while Jatiuwung Sub-district had the lowest density, at only 7,082.1 people per square kilometer.