Apalit is a landlocked municipality in the coastal province of Pampanga.
The municipality has a land area of 61.47 square kilometers or 23.73 square miles which constitutes 3.07% of Pampanga's total area. Its population as determined by the 2020 Census was 117,160. This represented 4.81% of the total population of Pampanga province, or 0.94% of the overall population of the Central Luzon region. Based on these figures, the population density is computed at 1,906 inhabitants per square kilometer or 4,937 inhabitants per square mile.