Pennsylvania Population 2024 Census Population. Also for cities and towns with a population of 5,000 or more. Pennsylvania has a land area of 44,729.9 square miles and a water area of 1,311.8 square miles.

State and county detailed population estimates. Pennsylvania population in 2023 is estimated to be 12.96 million, population in 2022 is estimated to be 12.97 million, and in 2021 is estimated to be 12.96 million.