Rembang Regency is a regency on the extreme northeast coast of Central Java Province, on the island of Java (bordering on the Java Sea) in Indonesia. The regency covers an area of 1,036.70 km2 on Java, and it had a population of 591,359 at the 2010 Census and 645,333 at the 2020 Census; the official estimate as of mid-2023 was 660,166, of whom 331,870 were males and 328,296 were females. Its administrative capital is the town of Rembang.

Geography

It is a lowland, with a maximum elevation of about 70 m above sea level. The Solo River flows through its inland section. The regency is crossed by the North Coast Road, an inter-province main road on the island.

Borders

Rembang Regency is bordered by:

Administrative districts

The regency is divided into fourteen districts (kecamatan), tabulated below with their areas and their populations at the 2010 Census and the 2020 Census, together with the official estimates as of mid-2023. The table also includes the locations of the district administrative centres, the number of administrative villages in each district (totaling 287 rural desa and 7 urban kelurahan - the latter all in Rembang town District), and its post-code. Note: (a) Rembang (town) District comprises 7 urban kelurahan (Gegunung Kulon, Kutoharjo, Leteh, Magersari, Pacar, Sidowayah and Tanjungsari) and 27 rural desa.

Climate

Rembang has a tropical monsoon climate (Am) with moderate to little rainfall from May to October and heavy rainfall from November to April.

Lasem

During the colonial Dutch East Indies period, the area was known as Lasem. The Han family of Lasem was a prominent Chinese immigrant family of colonial government bureaucrats and landlords in the area.