Population of Indonesia

After India, China and the United States, Indonesia is the world's fourth-most populous country. However, ranking among the world's most populous nations is a double-edged sword. It offers a golden opportunity to lift the country to global economic dominance provided the population is productive (young, skilled and healthy) and is fully absorbed by a thriving formal sector that drives rising purchasing power in a highly equitable society. Or, the other extreme, it threatens to trap the country in a cycle of socio-economic and environmental strain if the workforce remains underutilized, low-skilled, or unhealthy, ultimately becoming dependent on state support rather than driving growth, while income distribution inequality continues to rise.

Whether this vast population becomes a powerful engine of growth or an overwhelming burden depends on three critical pillars: (1) demographic trends, (2) socio-economic policy, and (3) the strength of the institutions tasked with unlocking Indonesia's human capital.

Ethnic Composition of Indonesia

According to the official national census conducted by Statistics Indonesia (BPS), there are 1,331 categorized ethnic identities spread across the Indonesian archipelago. In order to make the data more manageable, BPS grouped similar sub-ethnicities together. Even so, there remain over 600 distinct ethnic groupings.

However, not all these ethnic identities involve millions of people. In fact, there are only about a dozen ethnic identities in Indonesia that are dominant. Unfortunately, in the 2020 Population Census, BPS did not include a full count of ethnic identity and so we are dependent on the 2010 Population Census for detailed data. While this means the data are a bit dated, we don't expect to find significant differences in percentage shares of the population in the present.

Table 1 - Largest Ethnic Groups in Indonesia:

Group	Absolute Number	% of total Population
Javanese	95,217,022	40.2
Sundanese	36,701,670	15.5
Batak	8,466,969	3.6
Madurese	7,179,356	3.0
Minangkabau	6,462,713	2.73
Bugis	6,359,700	2.69
Betawi	6,807,968	2.9
Malay	5,365,399	2.3
Bantenese	4,657,784	2.0
Acehnese	4,091,451	1.7

^{Source: Statistics Indonesia Population Census 2010}

The two biggest groups are the Javanese (roughly 40 percent of the total Indonesian population) and Sundanese (roughly 15 percent of the population). Both groups originate from the island of Java, Indonesia's most populous island, which is home to around 56 percent of the country's total population (and which is also the political, financial and economic center of the country).

Over the centuries there has been significant transmigration of people (as well as inter-ethnic marriages), hence Javanese can be found all over the archipelago. In fact, during the Suharto regime (1966-1998) landless families on densely-populated Java, Bali and Madura were encouraged to migrate to the less populated islands. Meanwhile, for some ethnic groups it is a cultural tradition to migrate away from the homeland (in search of a livelihood), such as the Batak ethnic group, Minangkabau and Bugis.

Indonesia's national motto "unity in diversity" (Bhinneka Tunggal Ika) reflects the multitude of ethnic, cultural and linguistic varieties that can be found within the boundaries of Indonesia. Indeed, when you imagine an animist Papuan (from the far east of Indonesia) meeting a pious Muslim Acehnese (from the far west) one finds more differences in terms of religion, clothes, lifestyle, tradition, and native language than similarities. Still, a real national framework has been laid upon them, and therefore most Indonesians feel a strong bond, despite their differences. This powerful (artificial, yet deeply felt) sense of "Indonesian-ness" successfully binds the nation together.

Map of Indonesia

This diverse cultural makeup of Indonesia is the result of a long process of colonization initiated by the Dutch. In a time-span of about three centuries this small European nation managed to (gradually) expand its political power in the Archipelago - conquering the various indigenous kingdoms - until the present-day boundaries were established. In other words, during the formation of the Dutch colonial territory in Southeast Asia all these diverse cultures became part of a single political power/entity that was later inherited by the Indonesian nationalists after Independence in 1945.

While the Dutch created the political boundaries, the archipelago was not completely disconnected before they arrived. Major maritime trade networks, the spread of Islam, and earlier empires like Majapahit and Srivijaya had already created deep cultural and linguistic ties (including the use of "Market Malay" as a lingua franca) across the islands.

Meanwhile, cultural diversity is a blessing for Southeast Asia's largest economy. Each culture offers something interesting and this is what attracts millions of foreign tourists to Indonesia every year (hence tourism is an important foreign exchange earner). For example, cultural relics such as the Borobudur (Central Java) and Prambanan (Yogyakarta) but also contemporary culture such as Balinese Hinduism are reasons to book a ticket to Indonesia.

On the other hand, having a multitude of different beliefs (religions), traditions, ethnics and cultures also implies having difficulties in terms of governance. In fact, on various occasions there have been violent clashes between different groups within Indonesia that had their roots in ethnic or religious differences (although some argue that there were socio-economic and political root causes), events that undermined Indonesia's social fabric and the national motto.

These clashes were frequently triggered by rapid demographic shifts (due to transmigration), competition over local government jobs, land rights, and unequal economic opportunities between indigenous groups and migrants. Examples include the Maluku Sectarian Conflict (a violent, large-scale clash between Christian and Muslim communities in Ambon and surrounding islands in 1999–2002), the Poso Riots (Muslim-Christian clashes in Central Sulawesi in 1998-2001), and the Sampit Conflict (a brutal ethnic clash in Central Kalimantan between the indigenous Dayak people and Madurese transmigrants in 2001).

One may notice these events all occurred following the fall of President Suharto's centralized authoritarian regime in 1998, thereby allowing pent-up ethnic and religious tensions to erupted in several regions. Overall, though, governments of Indonesia (starting from 1945) have been successful in laying down a 'national identity' over all the ethnic and religious differences. Through education and media (and the strong arm of the army under Suharto), 'unity in diversity' has become deeply embedded in the social fabric of the country. Indonesia's state philosophy --Pancasila-- also successfully bridged the gap between a secular state and an Islamic state. Meanwhile, the era of Reformasi and democracy in the post-Suharto era gave the regions more power than they ever had before, which also reduced the deep-seated resentment toward Jakarta's centralized control and stripped regional separatist movements of their primary grievance.

There also exists a high degree of inequality in Indonesia and this has also fed negative sentiments among part of the Indonesian population. For example, income distribution inequality (reflected by a high Gini ratio). But among the so-called "Outer Regions" there also exists a feeling of resentment toward the dominating political and economic position of Java (Jakarta in particular). These emotions were (part of the) reason why the Indonesian government was forced to usher in the era of decentralization in the post-Suharto period. Moreover, under President Joko Widodo (2014-2024) it was decided to move the capital city from Jakarta to Nusantara in East Kalimantan (an ambitious project that is currently under development).

Table 2 - Five Most Populous Provinces of Indonesia (in millions of individuals):

Province	Population 2000	Population 2010	Population 2020	Population January 2026
West Java	35.8	43.1	48.3	51.2
East Java	34.8	37.5	40.7	42.3
Central Java	31.2	32.4	36.5	38.6
North Sumatra	11.6	13.0	14.8	16.0
Banten (Java)	8.1	10.6	11.9	12.6
Indonesia	206.3	237.6	270.2	287.2

^{Sources: Population Census, 2000, 2010 and 2020, Badan Pusat Statistik (BPS)}

Table 2 reveals that there exists a major population concentration on the island of Java. Despite covering only seven percent of the total land area, around 56 percent of the Indonesian people live on Java, particularly in the big cities such as Jakarta, Surabaya, Bandung, Yogyakarta and Bogor as these cities offer a bigger chance of employment. Therefore, many people migrate from the other islands to Java. This means that particularly in the cities on Java the ethnic composition is highly diverse.

This huge population concentration in urban environments on Java puts great pressure on (soft and hard) infrastructure across the island and is also a reason why absolute poverty is high on Java.

Indonesia's Population Growth

Family planning in Indonesia is coordinated by the National Population and Family Planning Board (Badan Kependudukan dan Keluarga Berencana Nasional, BKKBN), a central government institution. Under President Suharto, an highly effective national family planning program (Keluarga Berencana) was initiated in 1970 and has been sustained by his successors to the present day. This program serves as a cornerstone of the country's economic development strategy; suppressing population growth has successfully driven up per capita gross domestic product (GDP), fostering higher household savings, stimulating domestic investment, and accelerating poverty reduction across the archipelago.

Historically, the annual national population growth rate between 1971 and 1980 averaged 2.31 percent. Regionally, growth was highest in the province of Lampung (5.77 percent) --largely driven by the state's transmigration program--and lowest in Yogyakarta (1.10 percent). Reflecting the program's growing efficacy, the average annual growth rate fell to 1.98 percent during 1981–1990, and eased further to 1.49 percent in the 1991–2000 period, where it stabilized through the 2000–2010 decade.

In the 2010s the population growth rate further eased to 1.31 percent in 2019. The COVID-19 crisis in 2020-2021 is believed to have put even more pressure on the rate (due to economic disruptions, delayed marriages, and increased access to family planning services during lockdowns). Interestingly, this accelerated shift toward smaller family sizes has pushed Indonesia closer to its target of a stabilized population, reinforcing the country's transition toward an older, more urbanized demographic profile while presenting new challenges for sustaining its long-term demographic dividend.

Table 3 - Population Growth Rate of Indonesia (annual % change):

	2021	2022	2023	2024	2025	2026
Growth Rate	1.22	1.17	1.13	1.11	1.09*	1.07*

	2015	2016	2017	2018	2019	2020
Growth Rate	1.38	1.36	1.34	1.33	1.31	1.25

^{* Preliminary figures
Source: Badan Pusat Statistik (BPS)}

Total Fertility Rate of Indonesia

Meanwhile, the total fertility rate (TFR) is the average number of children a woman would have in her lifetime, assuming she lives through her childbearing years (typically ages 15-49) and experiences current age-specific fertility rates. Based on BPS data, Indonesia's current TFR is 2.13. This is interesting because it is the TFR that is used to determine whether a population is shrinking.

In a 'perfect world', if every couple had exactly two children, they would replace themselves perfectly, and the population would stay exactly the same size. However, as not all children become parents themselves, the globally recognized replacement level is 2.1 children per woman (at which a population naturally stabilizes).

And so, Indonesia's current TFR of 2.13 is virtually right on the replacement level. For comparison, dangerously low TFRs are found in countries such as South Korea (under 0.8), Japan (1.2), and Singapore (1.0). Indonesia remains in safe territory. This is good news because having a population growth rate of around 1 percent and a TFR near 2.1 is actually the ideal target BKKBN has spent decades trying to achieve. It means Indonesia still has a massive, productive young workforce with a relatively low dependency ratio (the ratio that measures the economic burden on the productive part of a population, while it prevents the rapid, unsustainable population explosions that strain public infrastructure, schools, and the job market.

However, as we discuss below (in the section about age structure), there are some subtle warning signs. The national average hides major local differences. For example, Jakarta's TFR has already dropped well below replacement level to 1.75, and Yogyakarta is at 1.89. These urban centers are aging much faster than rural provinces such as East Nusa Tenggara, which still has a TFR of 2.79. So, while the drop in the population growth rate is a sign of a maturing and urbanizing economy, the plateauing fertility rate means Indonesia has a limited window to fully capitalize on its demographic dividend before the population begins to age significantly. BPS reported in May 2026 that the proportion of elderly citizens in Indonesia now stands at 11.97 percent of the population, well beyond the 'official' threshold of 10 percent that marks the start of an aging population. It means Indonesia has officially entered the early stages of an aging population phase.

Table 4; Total Fertility Rate of Indonesia (Average Children per Woman):

	1971	1980	1990	2000	2010	2020
TFR	5.61	4.68	3.33	2.34	2.41	2.18

^{Source: Population Census, Badan Pusat Statistik (BPS)}

Table 4 reveals how Indonesia's TFR has declined over the decades. In 1971, a woman in Indonesia would have an average of 5.61 children during her reproductive lifetime. However, by 2020, it had become an average of 2.18 children.

A number of factors are behind this decline in the TFR:

• The National Family Planning Program (BKKBN) launched a massive, community-based campaign using the slogan "Dua Anak Cukup" (Two Children is Enough) under the Suharto administration. The program normalized modern contraceptive use, drastically increasing the Contraceptive Prevalence Rate (CPR) across the archipelago;
  
  
• More generally, access to and the effectiveness of modern birth control (specifically hormonal injections, pills, and implants) has been a crucial contributor to driving down the TFR;
  
  
• While historically early marriage was common (particularly in rural Indonesia), the 1974 Marriage Law set legal minimum ages for marriage while changing social norms gradually pushed the average age of first marriage higher. Delaying a marriage directly shortens a woman's cumulative reproductive window;
  
  
• Thanks to contraceptives and changing norms, girls were now able to become educated, implying they were not financially dependent on (finding) a husband;
  
  
• While in rural regions children are often regarded an economic asset ('banyak anak, banyak rezeki' which translates to 'many children, many blessings/wealth') as the children were destined to work on the family's land, in urban environments children require significant financial investment (schooling, healthcare and housing), thus in the urban environments parents started prioritizing the quality of children's upbringing over the quantity of children; and
  
  
• Improved public healthcare, sanitation, and immunization lowered infant mortality rates, giving parents the confidence to have fewer children. 

Population Size of Indonesia

According to data from BPS, Indonesia is home to 287.2 million people in early 2026. Table 5 shows how the total population of Indonesia has grown over the past decade from 255.4 million in 2015 to 287.2 million in early 2026. Considering the current growth rate, the population of Indonesia is expected to expand beyond 300 million people around the year 2030 or 2031.

Table 5 - Population Size of Indonesia (in millions of people):

	2021	2022	2023	2024	2025	2026
Population Size	272.7	275.8	278.7	281.6	284.4*	287.2*

	2015	2016	2017	2018	2019	2020
Population Size	255.4	258.9	261.9	265.0	268.1	270.2

^{* Preliminary figures
Source: Badan Pusat Statistik (BPS)}

Table 6; Population Size of Indonesia (in millions of people):

	1971	1980	1990	2000	2010	2020
Population Size	119.2	147.5	179.4	206.3	237.6	270.2

^{Source: Population Census, Badan Pusat Statistik (BPS)}

Based on projections by the United Nations (UN), the population of Indonesia is estimated to exceed 300 million by 2031-2032. After 2058 the UN expects the size of the Indonesian population to start declining as a consequence of slowing population growth and declining fertility.

Table 7; United Nation's Projections for Indonesia's Population Size (in millions of people):

	2030	2040	2050	2060	2075	2100
Population Size	295.9	311.8	320.7	322.5	317.7	295.5

^{Source: Population Census, Badan Pusat Statistik (BPS)}

Urbanization in Indonesia

When Indonesia had achieved its Independence in 1945 only around 12.5 percent of the total population lived in urban areas. However, over the next 80 years, we would see a process of strong urbanization in Indonesia (mostly on Java and Bali). This has important consequences (mostly positive) for the economy as --historically-- no country has ever transitioned from a low-income to a high-income economy without undergoing significant urbanization.

When businesses, workers, and infrastructure are concentrated in a single geographic area, it creates massive efficiencies for the economy such as reduced logistics costs and infrastructure sharing. In urban areas there exist big markets for services and products which encourage low productivity sectors to turn into high productivity sectors (supported by the influx of domestic and foreign direct investment).

Table 8 - Urbanization in Indonesia (% of total population):

	1960	1970	1980	1990	2000	2010	2020
Urbanization Rate	14.6	16.8	22.1	30.6	42.0	49.9	56.3

^{Source: Statista}

However, there is also another side to the story. Urbanization can also cause or increase specific socioeconomic problems, such as (urban) poverty, income distribution inequality, intolerance (and urban social conflict), terrorism, crime, and corruption. For Indonesia, there is the concern that urbanization is not accompanied by significant increases in productivity, hence there is not a significant increase in incomes. Weak governance in Indonesia's urban areas is also to blame.

In 2025, an estimated 57 percent of the Indonesian population lived in urban areas, concentrated in metropolitan areas such as Jakarta-Tangerang- Tangerang-Bekasi-Cianjur (Jabotabekjur), Greater Bandung, Semarang, Surabaya (and surrounding areas), Medan (North Sumatra), and Makassar (South Sulawesi).

Table 9 - UN Projections of Rural and Urban Population of Indonesia:

	2030	2035	2040	2045	2050
Rural Population (% of total population)	37.2	34.4	32.1	30.2	20.8
Urban Population (% of total population)	62.8	65.6	67.9	69.8	71.2

^{Source: United Nations}

Age Structure of Indonesia

In terms of age structure, Indonesia has a large population aged between 15 and 64 years (nearly 198 million people, or 69 percent of the total population, at the start of 2026). This is the part of the population that is (potentially) productive, and thus can drive economic growth.

This is also the reason why Indonesia enjoys the so-called demographic bonus (or demographic dividend), which is a period where the working-age population is significantly bigger than the non-productive population (children and elderly). This 'golden' period is expected to last until 2045.

Table 10 - Indonesian Population by Sex and Age Group (2026):

	Male (absolute)	Female (absolute)	Male + Female (absolute)	% of Total Population
0-14 years	34,090,800	32,679,800	66,770,600	23.2%
15-64 years	100,372,700	97,607,600	197,980,300	68.9%
65 years and over	10,670,500	12,046,800	22,717,300	7.9%
Total	144,864,000	142,334,300	287,198,400	100.0%

^{Source: Badan Pusat Statistik (BPS)}

Indonesia's median age has risen from 28.6 years in 2016 to 31.1 years in 2026. What this means is that half of the population is younger than 31.1 years at the start of 2026 and the other half is older than 31.1 years. This increasing median age does indicate that the population of Indonesia is --overall-- becoming older.

Indeed, BPS confirmed in May 2026 that the latest data show Indonesia is in the early stages of an 'ageing population'. On average, when more than 10 percent of the population falls in the elderly category (above 60 years of age), then the population is regarded to have started ageing.

This implies that the Indonesian government needs to prepare its infrastructure (including a sustainable pension system, as well as healthcare and daycare for seniors) for a rapid increase in seniors while simultaneously maximizing the tail end of its remaining demographic dividend (by shifting economic focus from cheap, low-skilled labor to high-value tech, creative, and manufacturing sectors).

Table 11 - Elderly as a Percentage of the Indonesian Population:

	2010	2015	2020	2025
Men	6.9%	7.9%	9.5%	11.3%
Women	8.3%	9.0%	10.4%	12.6%
Total	7.59%	8.47%	9.93%	11.97%

^{BPS defines elderly as someone over the age of 60 years
Source: Badan Pusat Statistik (BPS)}

Demographics and Economic Waves

General Outline

A temper in population growth caused by decreases in fertility (which can be caused by matters such as better access to birth control, rising incomes, urbanization and higher levels of education for women) helps to stimulate a significant shift in the age distribution of the population towards those of the working age (but at a later stage decreases in mortality and fertility will cause an aging population). This shift is able to accelerate economic growth as the working age population increases while the (relative) number of dependent children declines.

This process can be thought of as constituting a series of waves. The first wave begins when this working age population is employed which results in increased production. Employment also implies higher incomes and consequently causes households to consume more products. Households might also save more due to the reduced number of child dependents which subsequently leads to increased investment, as well as rising capital stock and further increases in economic production.

The second demographic wave occurs when large portions of the population approach the end of their working lives and commence to save and invest for their retirement. Thus, the resulting increased capital accumulation may help to drive economic growth further. After this stage concern about the economy can arise because of stagnating population growth and an aging population.

The Indonesian Case

Indonesia is currently in the late-middle stage of its first demographic wave. With fertility rates stabilizing near replacement level and a median age of approximately 30, the country possesses a "productive engine" of over 140 million people.

The primary concern for 2026 and beyond is the middle-income trap. If Indonesia cannot pivot from a consumption-based economy to a high-value manufacturing and technology hub before its population begins to age (expected by the late 2030s), it risks growing old before it gets rich.

Further Reading:

• Poverty in Indonesia
• (Un)employment in Indonesia
• Religions in Indonesia

Last update: 13 May 2026