Kajen is an administrative district (kecamatan) and a town (kelurahan) in Central Java Province of Indonesia, and is the administrative centre of the Pekalongan Regency in that province. It covers a land area of 75.15 km2, and had a population of 58,048 at the 2010 CensusBiro Pusat Statistik, Jakarta, 2011. and 73,067 at the 2020 Census;Badan Pusat Statistik, Jakarta, 2021. the official estimate as at mid 2025 was 80,919.Badan Pusat Statistik, Jakarta, 27 February 2026, Kabupaten Pekalongan Dalam Angka 2026 (Katalog-BPS 1102001.3326) It is sub-divided into the town (kelurahan) of Kajen and 24 rural villages (desa), all sharing the postcode of 51161. The town had 2,982 inhabitants as at mid 2023.Badan Pusat Statistik, Jakarta, 26 September 2024, Kecamatan Kajen Dalam Angka 2024 (Katalog-BPS 1102001.3326080)
Climate Kajen has a tropical rainforest climate (Af) with moderate rainfall from June to September and heavy to very heavy rainfall from October to May.
Rural villages (desa) Besides the town of Kajen, the district comprises 24 rural villages, tabled below with their populations as at mid 2023, with a combined district population of 76,818:Badan Pusat Statistik, Jakarta, 26 September 2024, Kecamatan Kajen Dalam Angka 2024 (Katalog-BPS 1102001.3326080)
Tambakroto (5,217) Kutorojo (2,681) Linggoasri (1,619) Brengkolang (2,054) Pringsurat (1,022) Sokoyoso (1,996)
Sinangohprendeng (1,444) Kajongan (2,838) Pekiringanageng (1,863) Gandarum (1,776) Sabarwangi (6,076) Kalijoyo (2,033)
Wonorejo (2,984) Pekiringan Alit (2,264) Kutorejo (4,218) Kajen (town) (2,972) Nyamok (3,990) Tanjungkulon (2,634)
Tanjungsari (3,613) Gejlig (6,816) Kebonagung (5,825) Sangkanjoyo (2,007) Salit (2,528) Sambiroto (3,475) Rowolaku (2,873)
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