The Surabaya metropolitan area or Greater Surabaya, known locally as Gerbangkertosusila (Javanese: ꦒꦼꦂꦧꦁ​ꦏꦼꦂꦠꦱꦸꦱꦶꦭ, romanized: Gěrbangkěrtåsusila, from Gresik-Bangkalan-Mojokerto-Surabaya-Sidoarjo-Lamongan), is a metropolitan area in East Java, Indonesia. It is the country's second-largest metropolitan area, after Jakarta metropolitan area. Gerbangkertosusila had also been used in presidential decree to refer to larger region which include Jombang, Bojonegoro, and Tuban.^[4]

Quick Facts Gerbangkertosusila, Other transcription(s) ...

Surabaya metropolitan area Gerbangkertosusila
Megacity and Megalopolis
Other transcription(s)
• Javanese	ꦒꦼꦂꦧꦁ​ꦏꦼꦂꦠꦱꦸꦱꦶꦭ Gerbangkertasusila
From top, left to right: Downtown Surabaya, aerial view of Gresik Regency, Mojokerto at night, Suramadu Bridge that connects Surabaya and Bangkalan Regency, Brahu Temple Trowulan in Mojokerto Regency, Gelora Delta Stadium in Sidoarjo Regency, a mangrove tree in Lamongan Regency.
Country	Indonesia
Province	East Java
Core city	Surabaya
Satellite city	Mojokerto
Regencies	Gresik Regency Bangkalan Regency Mojokerto Regency Sidoarjo Regency Lamongan Regency
Area
• Metro	6,310.06 km2 (2,436.33 sq mi)
Population  (mid 2022 estimate)
• Urban	6,234,383
• Metro	9,975,878
• Metro density	1,600/km2 (4,100/sq mi)
GDP Megapolitan [1]
• GDP	IDR 1,878,228 trillion (2022)
• Nominal	US$ 126.49 billion (2022)
• PPP	US$ 387.18 billion (2022)
Time zone	UTC+7 (Indonesia Western Time)
GDP metro	2022[2][3]
- Total	Rp 1,413.94 trillion US$ 95.22 billion US$ 291.41 billion (PPP)
- Per capita	Rp 121.94 million US$ 8,212 US$ 25,131 (PPP)
Highest elevation 3,339 m/10,955 ft (Arjuno-Welirang, in Mojokerto Regency)

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Grebangkertosusila is an official acronym of "Gresik Bangkalan Mojokerto Surabaya Sidoarjo Lamongan", a main metropolitan or planning area in East Java consisting of the seven cities and regencies with those names (Mojokerto is both a city and a separate regency).^[5][6] It has an area of 6,310.06 km², and at the 2020 Census had a population of 9,924,509,^[7] rising to 9,975,878 according to the official estimates as at mid 2022.^[8]

The national government regards the Surabaya Metropolitan Area as including only Surabaya, Sidoarjo Regency, and Gresik Regency, known as "Zona Surabaya Raya".^[9] Gresik Regency includes Bawean Island, covering some 196 km² and lying north of Java; however Bawean Island is excluded from the Metropolitan Area.

Surabaya traditionally constituted Indonesia's second-largest metropolitan area, after Jakarta, but fast growing Bandung Metropolitan Area (in West Java) is since 2005 more populous. However, the extended metropolitan area of Surabaya is second in Indonesia only to Jabodetabek. The areas and populations at the 2010 Census,^[10] the 2020 Census^[11] and according to the official estimates for mid 2022,^[12] are shown below for the component parts of the metropolitan area.

Note: (a) The island of Bawean, while part of Gresik Regency, is not technically part of the Metropolitan area; nevertheless for convenience the figures given here include Bawean.

Reference: Statistics Indonesia^[13]

Surabaya metropolitan area has air connection via Juanda International Airport.

Surabaya metropolitan area has five commuter rail services with the network similar with KRL Commuterline in Jakarta metropolitan area. The services connects Surabaya city center to the neighboring cities and regency in the area.

The Suroboyo Bus city bus is serving Surabaya, using plastic waste as a form of payment. Ever since May 2022, however, direct payment using plastic bottles on the bus has been terminated and plastic waste has to be exchanged in designated points beforehand.^[14]

• List of metropolitan areas by population