Indonesia’s total land area covers approximately 1,890,179.8 $\text{km}^2$, spread across 38 provinces. The scale ranges immensely:
- The Largest Province: Central Kalimantan spans a massive $153,430.36\text{ km}^2$.
- The Smallest Province: Jakarta (the Special Capital Region) covers just $661.53\text{ km}^2$.
The top largest provinces are heavily concentrated on the outer islands of Kalimantan (the Indonesian portion of Borneo) and Sumatra, featuring extensive river basins, dense tropical rainforests, and rugged terrain.
The Top 10 Largest Provinces in Indonesia
| Rank | Province | Major Island / Region | Land Area (km2) | Capital City |
| 1 | Central Kalimantan (Kalimantan Tengah) | Borneo | 153,430.36 | Palangka Raya |
| 2 | West Kalimantan (Kalimantan Barat) | Borneo | 147,018.06 | Pontianak |
| 3 | East Kalimantan (Kalimantan Timur) | Borneo | 126,951.76 | Samarinda |
| 4 | Riau | Sumatra | 89,900.78 | Pekanbaru |
| 5 | South Sumatra (Sumatera Selatan) | Sumatra | 86,771.92 | Palembang |
| 6 | North Sumatra (Sumatera Utara) | Sumatra | 72,437.76 | Medan |
| 7 | North Kalimantan (Kalimantan Utara) | Borneo | 69,900.89 | Tanjung Selor |
| 8 | Central Sulawesi (Sulawesi Tengah) | Sulawesi | 61,496.98 | Palu |
| 9 | Aceh | Sumatra | 56,835.02 | Banda Aceh |
| 10 | Jambi | Sumatra | 49,023.04 | Jambi |
While Western New Guinea features massive territorial expanses split into several newer administrative provinces—such as Papua, South Papua, and West Papua—boundary adjustments and divisions across the eastern region place several Kalimantan and Sumatran heavyweights firmly in the top 10 national land area rankings.
Characteristics of the Top Regions
1. The Kalimantan Heavyweights (Borneo)
Kalimantan dominates the top tier of Indonesia’s largest administrative divisions. Central Kalimantan, West Kalimantan, and East Kalimantan take up the first, second, and third spots on this list. Characterized by wide winding rivers, peatland swamps, and expansive equatorial rainforests, these provinces make up the bulk of Indonesia’s footprint on Borneo.
2. Sumatra’s Territorial Anchors
Sumatra features several massive provinces that combine rich agricultural plains with extensive coastal river networks. Riau, South Sumatra, and North Sumatra lead the island’s territorial size, serving as crucial economic engines for trade, agriculture, and natural resources.
3. Sulawesi’s Rugged Peninsula Leader
Central Sulawesi rounds out the upper tier. Shaped by dramatic mountain ranges, deep valleys, and indented coastline gulfs, it is the largest province on the orchid-shaped island of Sulawesi.

Indonesia’s Top 10 Largest Provinces, 2026
Source: BPS-Statistics Indonesia
bps.go.id/en /statistics-table/3 /VUZwV01tSlpPVl psWlRKbmMxcFhh SGhEVjFoUFFUM DkjMyMwMDAw /total-area- and-number- of-islands- by-province. html?year=2025
















