Indonesia - Geography

Here, let us take a look at the Geography of Indonesia.

note 1: according to Indonesia's National Coordinating Agency for Survey and Mapping, the total number of islands in the archipelago is 13,466, of which 922 are permanently inhabited (Indonesia is the world's largest country comprised solely of islands); the country straddles the equator and occupies a strategic location astride or along major sea lanes from the Indian Ocean to the Pacific Ocean

note 2: Indonesia is one of the countries along the Ring of Fire, a belt of active volcanoes and earthquake epicenters bordering the Pacific Ocean; up to 90% of the world's earthquakes and some 75% of the world's volcanoes occur within the Ring of Fire; 80% of tsunamis, caused by volcanic or seismic events, occur within the "Pacific Ring of Fire"

note 3: despite having the fourth largest population in the world, Indonesia is the most heavily forested region on earth after the Amazon

note 4: two major food crops apparently developed on the island of New Guinea: bananas and sugarcane

. Mother's mean age at first birth is 22.4 years (2017 est.) (Note: data represents median age at first birth among women 25-49), whereas, the Maternal mortality ratio is 173 deaths/100,000 live births (2020 est.)

Geographical data of Indonesia
Location Southeastern Asia, archipelago between the Indian Ocean and the Pacific Ocean
Geographic coordinates 5 00 S, 120 00 E
Map references Southeast Asia
Tarrain mostly coastal lowlands; larger islands have interior mountains
Natural Resources petroleum, tin, natural gas, nickel, timber, bauxite, copper, fertile soils, coal, gold, silver
Natural Hazards

occasional floods; severe droughts; tsunamis; earthquakes; volcanoes; forest fires

volcanism: Indonesia contains the most volcanoes of any country in the world - some 76 are historically active; significant volcanic activity occurs on Java, Sumatra, the Sunda Islands, Halmahera Island, Sulawesi Island, Sangihe Island, and in the Banda Sea; Merapi (2,968 m), Indonesia's most active volcano and in eruption since 2010, has been deemed a Decade Volcano by the International Association of Volcanology and Chemistry of the Earth's Interior, worthy of study due to its explosive history and close proximity to human populations; on 22 December 2018, a large explosion and flank collapse destroyed most of the 338 m high island of Anak Krakatau (Child of Krakatau) and generated a deadly tsunami inundating portions of western Java and southern Sumatra leaving more than 400 dead; other notable historically active volcanoes include Agung, Awu, Karangetang, Krakatau (Krakatoa), Makian, Raung, Sinabung, and Tambora; see note 2 under "Geography - note"

Irrigated Land 67,220 sq km (2012)
Major rivers (by length in km) Sepik (shared with Papua New Guinea [s]) - 1,126 km; Fly (shared with Papua New Guinea [s]) - 1,050 km
note – [s] after country name indicates river source; [m] after country name indicates river mouth
Major aquifers
Land Boundaries 2,958 km
Border Countries Malaysia 1,881 km; Papua New Guinea 824 km; Timor-Leste 253 km
Coastline 54,716 km
Climate tropical; hot, humid; more moderate in highlands
Area
Total Area
Land Area 1,811,569 sq km
Water Area 93,000 sq km
comparative Area slightly less than three times the size of Texas
Maritime Claims
Territorial sea 12 nm
Exclusive economic zone 200 nm
Elevations
Highest point Puncak Jaya 4,884 m
Lowest point Indian Ocean 0 m
Mean elevation 367 m
Land Use
Agricultural land 31.2% (2018 est.)
Agricultural land: arable land arable land: 13% (2018 est.)
Agricultural land: permanent crops permanent crops: 12.1% (2018 est.)
Agricultural land: permanent pasture permanent pasture: 6.1% (2018 est.)
Forest 51.7% (2018 est.)
Other 17.1% (2018 est.)
Population Distribution

Major concentration on the island of Java, which is considered one of the most densely populated places on earth; of the outer islands (those surrounding Java and Bali), Sumatra contains some of the most significant clusters, particularly in the south near the Selat Sunda, and along the northeastern coast near Medan; the cities of Makasar (Sulawesi), Banjarmasin (Kalimantan) are also heavily populated

People and Society

In Indonesia, the different Ethnic groups are such that we have: Javanese 40.1%, Sundanese 15.5%, Malay 3.7%, Batak 3.6%, Madurese 3%, Betawi 2.9%, Minangkabau 2.7%, Buginese 2.7%, Bantenese 2%, Banjarese 1.7%, Balinese 1.7%, Acehnese 1.4%, Dayak 1.4%, Sasak 1.3%, Chinese 1.2%, other 15% (2010 est.)

Population
Pop growth rate 0.73% (2024 est.)
Birth rate 14.8 births/1,000 population (2024 est.)
Death rate 6.8 deaths/1,000 population (2024 est.)
Health expenditure 3.4% of GDP (2020)
Physicians Density
Hospital bed Density 1 beds/1,000 population (2017)
Total fertility rate 1.96 children born/woman (2024 est.)
Gross reproduction rate 0.96 (2024 est.)
Contraceptive prevalence rate 55.5% (2018)
Est married women (ages 15-49) 70% (2023 est.)
Literacy age 15 and over can read and write
Education expenditures 3.5% of GDP (2020 est.)
Net Migration rate -0.7 migrant(s)/1,000 population (2024 est.)
Nationality Indonesian | Indonesian(s)
Languages
Religions Muslim 87.4%, Protestant 7.5%, Roman Catholic 3.1%, Hindu 1.7%, other 0.8% (includes Buddhist and Confucian) (2022 est.)
Age Structure
0-14 years 23.8% (male 34,247,218/female 32,701,367)
15-64 years 68.3% (male 96,268,201/female 95,961,293)
65 years and over 8% (2024 est.) (male 10,284,628/female 12,099,758)
Dependency Ratios
Total dependency ratio 47.6
Youth dependency ratio 37.6
Elderly dependency ratio 10
Potential support ratio 10 (2021 est.)
Median Age
Total 31.5 years (2024 est.)
Male 30.8 years
Female 32.3 years
Urbanization
Urban population 58.6% of total population (2023)
Rate of urbanization 1.99% annual rate of change (2020-25 est.)
Major urban areas (Pop) 11.249 million JAKARTA (capital), 3.729 million Bekasi, 3.044 million Surabaya, 3.041 million Depok, 2.674 million Bandung, 2.514 million Tangerang (2023).
Sex Ratio
At birth 1.05 male(s)/female
0-14 years 1.05 male(s)/female
15-64 years 1 male(s)/female
65 years and over 0.85 male(s)/female
Total population 1 male(s)/female (2024 est.)
Infant Motality
Total 18.9 deaths/1,000 live births (2024 est.)
Male 21.3 deaths/1,000 live births
Female 16.4 deaths/1,000 live births
Life Expectancy at birth
Total population 73.6 years (2024 est.)
Male 71.3 years
Female 76 years
Drinking Water Sources
Improved: urban urban: 98.2% of population
Improved: rural rural: 86.8% of population
Improved: total total: 93.3% of population
Unimproved: urban urban: 1.8% of population
Unimproved: rural rural: 13.2% of population
Unimproved: total total: 6.7% of population (2020 est.)
Sanitation facility acess
Improved: urban urban: 97.2% of population
Improved: rural rural: 86.5% of population
Improved: total total: 92.5% of population
Unimproved: urban urban: 2.8% of population
Unimproved: rural rural: 13.5% of population
Unimproved: total total: 7.5% of population (2020 est.)
Major Infectious diseases
Degree of risk very high (2023)
Food or waterborne diseases bacterial diarrhea, hepatitis A, and typhoid fever
Vectorborne diseases dengue fever, malaria, and sexually transmitted diseases: hepatitis B (2024)
Alcohol consumption per capita
Total 0.08 liters of pure alcohol (2019 est.)
Beer 0.06 liters of pure alcohol (2019 est.)
Wine 0.01 liters of pure alcohol (2019 est.)
Spirits 0.02 liters of pure alcohol (2019 est.)
Other alcohols 0 liters of pure alcohol (2019 est.)
Tobacco use
Total 37.6% (2020 est.)
Male 71.4% (2020 est.)
Female 3.7% (2020 est.)
Child marriage
Women married by age 15 2%
Women married by age 18 16.3% (2017 est.)
Demographic profile

Indonesia has the world’s fourth-largest population.  It is predominantly Muslim and has the largest Muslim population of any country in the world.  The population is projected to increase to as much as 320 million by 2045.  A government-supported family planning program.  The total fertility rate (TFR) – the average number of births per woman – from 5.6 in the mid-1960s to 2.7 in the mid-1990s.  The success of the program was also due to the social acceptance of family planning, which received backing from influential Muslim leaders and organizations.

The fertility decline slowed in the late 1990’s when responsibility for family planning programs shifted to the district level, where the programs were not prioritized.  Since 2012 the national government revitalized the national family planning program, and Indonesia’s TFR has slowly decreased to 2.3 in 2020.  The government may reach its goal of achieving replacement level fertility – 2.1 children per woman – but the large number of women of childbearing age ensures significant population growth for many years. 

Indonesia is a source country for labor migrants, a transit country for asylum seekers, and a destination mainly for highly skilled migrant workers.  International labor migration, both legal and illegal, from Indonesia to other parts of Asia (most commonly Malaysia) and the Middle East has taken place for decades because of high unemployment and underemployment, poverty, and low wages domestically.  Increasing numbers of migrant workers are drawn to Australia, Canada, New Zealand, and the US.  The majority of Indonesian labor migration is temporary and consists predominantly of low-skilled workers, mainly women working as domestics.

Indonesia’s strategic location between Asia and Australia and between the Pacific and Indian Oceans – and its relatively easy accessibility via boat – appeal to asylum seekers.  It is also an attractive transit location because of its easy entry requirements and the ability to continue on to Australia.  Recent asylum seekers have come from Afghanistan, Burma (Rohingyas), Iraq, Somalia, and Sri Lanka.  Since 2013, when Australia tightening its immigration policy, thousands of migrants and asylum seekers have been stranded in Indonesia, where they live in precarious conditions and receive only limited support from international organizations.  The situation for refugees in Indonesia has also worsened because Australia and the US, which had resettled the majority of refugees in Indonesia, have significantly lowered their intake.

All Important Facts about Indonesia

Want to know more about Indonesia? Check all different factbooks for Indonesia below.

Indonesia is found in South-Eastern Asia