Jombang Regency is a regency of East Java, Indonesia, situated to the southwest of Surabaya. The capital of the regency is the town of Jombang. The regency has an area of 1,159.50 km² and a population of 1,202,407 at the 2010 census and 1,318,062 at the 2020 census; the official estimate as of mid-2023 was 1,370,510. It became a regency in 1910. It was t…Jombang Regency is a regency of East Java, Indonesia, situated to the southwest of Surabaya. The capital of the regency is the town of Jombang. The regency has an area of 1,159.50 km² and a population of 1,202,407 at the 2010 census and 1,318,062 at the 2020 census; the official estimate as of mid-2023 was 1,370,510. It became a regency in 1910. It was the birthplace of Abdurrahman Wahid, the 4th president of Indonesia.