The majority of Pati Regency's population in 2024 will be of working age.

According to 2024 data from the Central Statistics Agency (BPS), 880,340 or approximately 63.84% of the population in Pati Regency are in the productive age group (15-59 years). 19.87% of the total population, or approximately 274,030, are children (aged 0-14 years), and another 16.29% are aged over 60 years.

The population of Pati Regency was recorded at 1.38 million in 2024. This figure is higher than in 2023 and December 2021. Compared to the previous five years, the Compound Annual Growth Rate (CAGR) of this region is higher, with a five-year growth rate recorded at 1.83%.

In terms of nominal population compared to other regions in Central Java Province, this regency/city ranks ninth, while in terms of island ranking, it is 41st.

The following is the population by age group in Pati Regency in June 2024, sourced from the publication of the Central Statistics Agency (BPS):

* Age 0-4 years: 76,520 (5.55%)
* Age 5-9 years: 96,230 (6.98%)
* Age 10-14 years: 101,270 (7.34%)
* Age 15-19 years: 87,080 (6.31%)
* Age 20-24 years: 100,280 (7.27%)

* Age 25-29 years: 99,550 (7.22%)
* Age 30-34 years: 99,410 (7.21%)
* Age 35-39 years: 97,250 (7.05%)
* Age 40-44 years: 106,820 (7.75%)
* Age 45-49 years: 104,130 (7.55%)
* Age 50-54 years: 94,170 (6.83%)
* Age 55-59 years: 91,640 (6.65%)
* Age 60-64 years: 77,730 (5.64%)
* Age 65-69 years: 58,910 (4.27%)
* Age 70-74 years: 38,860 (2.82%)
* Age 75 years and over: 49,160 (3.56%)