Cilacap Regency had a population of 1.94 million in 2020.

The 2020 Population Census results show that Cilacap Regency, Central Java, had a population of 1.94 million in 2020. This is the highest population among all regencies in Central Java Province.

The details show that 980,990 of Cilacap's population are male, while 963,860 are female.

Spatially, Majenang District has the largest population in Cilacap, namely 140,330 people or 7.22% of the total population. It is followed by Kesugihan District with a population of 133,260 or 6.85% of the total population.

Meanwhile, Kampung Laut District has the smallest population in Cilacap, namely 15,520 people or 0.8% of the total population. Above it is Sampang District with 43,400 inhabitants or 2.24% of the total population.

Based on age group, 1.36 million people or 69.9% of Cilacap's population are in the productive age group (15-64 years old). The remaining 585,420 people (30.1%) are in the non-productive age group.

Specifically, 434,630 people or 22.35% of Cilacap's population are in the non-productive age group (0-14 years old). Meanwhile, 150,790 people or 7.75% of Cilacap's population are in the unproductive age group (65 years and older).

Administratively, Cilacap is divided into 24 districts consisting of 269 villages and 15 urban villages. Cilacap has a land area of 2,124.47 square kilometers (km) with a population density of 909 people/km².

Wanareja is the district with the largest area, namely 185.06 km². Meanwhile, Cilacap Selatan has the smallest area, namely 9.11 km² (excluding Nusa Kambangan Island).

Furthermore, Cilacap Selatan is the most densely populated area with a population density of 9,215 people/km². Meanwhile, Kampung Laut is the district with the lowest population density, namely only 106 people/km².