Pekalongan is a city of Central Java, Indonesia. It was formerly the seat of Pekalongan Regency on the northern coast of the province, but is now an independent municipality within the province. It covers a land area of 45.25 km2 and had a population of 281,434 at the 2010 Census and 307,150 at the 2020 Census; the official estimate as at mid 2023 was 317,524. The city is Central Java's most important port, and is known for its batik.