Regencies of Indonesia in the context of "Central Java"

Sangiran is an archaeological excavation site in Java in Indonesia. According to a UNESCO report (1995) "Sangiran is recognized by scientists to be one of the most important sites in the world for studying fossil man, ranking alongside Zhoukoudian (China), Willandra Lakes (Australia), Olduvai Gorge (Tanzania), and Sterkfontein (South Africa), and more fruitful in finds than any of these."

The area comprises about 56 km (7 km x 8 km). It is located in Central Java, about 15 kilometers north of Surakarta in the Solo River valley. Administratively, Sangiran area is divided between 2 regencies: Sragen (districts of Gemolong, Kalijambe, and Plupuh) and Karanganyar (district of Gondangrejo). An important feature of the site is the geology of the area. Originally a dome was created millions of years ago through tectonic uplifts. The dome was then eroded exposing beds within the dome which are rich in archeological records.

Mimika Regency is one of the regencies (kabupaten) in the Indonesian province of Central Papua. It covers an area of 21,693.51 km, and had a population of 182,001 at the 2010 Census, which grew to 311,969 at the 2020 Census. The official estimate as of mid-2024 was 492,896 - a 58% gain from 2020. The administrative centre is the town of Timika, which lies within Mimika Baru District, which had 143,367 inhabitants in mid-2023 but this figure officially more than doubled to 318,679 in mid 2024. The regency covers the entire south coast of its province. The only other coastal regency of Central Papua is Nabire Regency, covering the north coast.

The Tenggerese people are a sub-ethnic group of Javanese in eastern Java who are centered in the isolated Tengger mountains (Mount Bromo) in the Bromo Tengger Semeru National Park in eastern Java. The majority of the Tenggerese population profess Java Hinduism as their religion. They are the only Javanese ethnic group who have remained Hindu since the Majapahit era after the Osing people, who have been Islamized.

Scattered communities of Tenggerese also exist in the Pasuruan, Probolinggo, Malang, and Lumajang regencies of eastern Java. They are traditionally believed to be the descendants of the legendary Roro Anteng and Joko Seger. The Tenggerese are considered an ethnic sub-group of the Javanese people. Tengger people do not have a caste system. Their traditions are rooted in customs originating from the Majapahit Empire.

Sumenep, officially the Sumenep Regency, was previously known as Samanap or Zamanap in English, is a regency of the East Java province, Indonesia. It has an area of 2,093.50 square kilometres (808.30 sq mi) and an population of 1,143,002 (comprising 552,127 males and 590,875 females) as at mid 2024. The administrative capital is Kota Sumenep, has a name that reflects it is historical and cultural evolution. Formerly, the area was briefly known as Sungeneb in the 13th century, Purwareja in the 15th century, and Sumekar in the 16th century.

The regency occupies the eastern end of Madura island and also includes numerous smaller islands to the east (primarily Talango Island, the Sapudi Islands, and the Kangean Islands), to the north (the Masalembu Islands), and to the south (the Giligenteng Islands) of Madura. It is bordered by the Pamekasan Regency to the west, Madura Strait to the south, and the Java Sea to the north and east. The airport nearby is Trunojoyo Airport with flights to Surabaya.

Sragen Regency (Javanese: ꦑꦧꦸꦥꦠꦺꦤ꧀ꦱꦿꦒꦺꦤ꧀, romanized: Kabupatèn Sragèn) is a regency (Indonesian: kabupaten) in the eastern part of Central Java province in Indonesia. It covers an area of 994.57 km and had a population of 858,266 at the 2010 Census and 976,951 at the 2020 Census; the official estimate as at end 2024 was 1,004,761 (comprising 500,487 males and 504,274 females). Its capital is the town of Sragen, located about 30 km to the northeast of Surakarta. Sragen is bordered by Karanganyar Regency to the south, Boyolali Regency to the west, Grobogan Regency to the north, and East Java Province to the east.

Java's longest river, the Bengawan Solo River, flows through the fertile rice fields in the region. The archaeological excavation and UNESCO World Heritage Site of Sangiran is located in Sragen.

Karanganyar Regency (Javanese: ꦏꦫꦁꦲꦚꦂ) is a regency in the Indonesian province of Central Java. It covers an area of 767.79 km and had a population of 813,196 at the 2010 Census and 931,963 at the 2020 Census; the official estimate as of mid-2024 was 961,969 (comprising 479,433 males and 482,476 females). Its administrative capital is the town of Karanganyar.

Bondowoso Regency (Javanese: ꦏꦧꦸꦥꦠꦺꦤ꧀ꦧꦺꦴꦤ꧀ꦝꦺꦴꦮꦺꦴꦱꦺꦴ, romanized: Kabupatèn Bondowoso) is a landlocked regency in East Java, Indonesia. It covers an area of 1,560.10 km, and had a population of 736,772 at the 2010 Census and 776,151 at the 2020 Census; the official estimate as of mid-2024 was 788,007 (comprising 385,405 males and 402,602 females). The most common languages are Madurese and Javanese, although Madurese is the majority. The nearest large city is Surabaya, approximately five hour's drive away.

The administrative centre of the regency is the provincial town of Bondowoso, after which the regency is named. Common in most provincial towns is a park in the city centre, called "Alun-Alun"; Bondowoso is no exception. In the backdrop of the park is a view of a mountain ("gunung").

The Tanimbar Islands (Indonesian: Kepulauan Tanimbar; Indonesian pronunciation: [kəpuˌlawan̪ t̪aˈnimbar]), also called Timur Laut (literally, "North East"; Indonesian pronunciation: [ˌt̪imʊr ˈlaʊt̪̚]), are a group of about 65 islands in the Maluku province of Indonesia. The largest and most central of the islands is Yamdena; others include Selaru to the southwest of Yamdena, Larat and Fordata to the northeast, Maru and Molu to the north, and Seira, Wuliaru, Selu, Wotap and Makasar to the west. The Indonesian phrase timur laut means "east of the sea" or "northeast".

The Tanimbar Islands are administered as the Tanimbar Islands Regency (Indonesian: Kabupaten Kepulauan Tanimbar), a regency of Maluku. The Regency covers a land area of 10,166.82 km, and it had a population of 105,341 at the 2010 census, rising to 123,572 at the 2020 census; the official estimate as at mid 2024 was 132,337. The principal town and administrative centre lies at Saumlaki which (with the suburban North Saumlaki (Saumlaki Utara) and the villages of Olilit and Sifnana) occupies a peninsula in the southeast of Yamdena Island.