How Sri Lanka's administrative map evolved from ancient kingdoms to nine provinces

Countries & Cities · Published 12 October 2026 Swipe more like this →

In short: Sri Lanka's current nine-province system is a relatively modern construct. Before British rule, the island was governed through a complex hierarchy of Disavanis and Ratas. Understanding these shifts reveals how colonial commissions and constitutional amendments reshaped the nation's internal power structures over nearly two centuries.

The administrative landscape of Sri Lanka has undergone radical transformations. Long before modern borders, the Kandyan kingdom utilized a tiered system of governance. This included Disavanis, which were large divisions governed by a Dissava acting as a king's representative, and smaller Ratas, which were governed by a Rate Mahatmaya. These divisions were further subdivided into Korales and then into Pattu, which comprised various villages.

The transition to a modern structure began after the British took control of the entire island in 1815. Initially, the British maintained three ethnic-based administrations: the Low Country Sinhalese, Kandyan Sinhalese, and Tamil. However, the Colebrooke–Cameron Commission of 1829 recommended unifying these into a single administration. This led to the creation of five geographic provinces on 1 October 1833, including the Central, Eastern, Northern, Southern, and Western provinces.

Over the following century, the map continued to expand. The North Western Province was established in 1845, followed by the North Central Province in 1873, and the Uva Province in 1886. By the middle of the 20th century, most provincial functions had shifted to the second-level districts, leaving provinces largely ceremonial. This changed in 1987 with the 13th Amendment to the 1978 Constitution, which established provincial councils to address demands for decentralization.

The structure has not been without political friction. In 1988, following the Indo-Lanka Accord, the Northern and Eastern provinces were merged into a single administrative unit. This merger was highly controversial, particularly among Sinhalese-speaking people. Although intended to be temporary, the merger persisted until the Supreme Court ruled in October 2006 that the original proclamations were null and void, leading to the formal de-merger on 1 January 2007.

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