When did the Kingdom of Laos exist?

The Kingdom of Laos existed 1947–1975. On this map it is drawn 1956–1975.

How large was the Kingdom of Laos?

At its greatest extent drawn on this map, the Kingdom of Laos covered about 230,000 km². That is the largest area the border data gives it across the years it is drawn, not necessarily its greatest extent in history.

Southeast Asia · The modern states

Kingdom of Laos

Kingdom (constitutional monarchy) · 1947–1975

The Kingdom of Laos was established by constitution on 11 May 1947 as a self-governing state within the French Union, reunifying the Lao territories under the Luang Prabang monarchy. It gained full independence from France on 22 October 1953, was confirmed at the Geneva Conference on 21 July 1954 and joined the United Nations on 14 December 1955.

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Type: Kingdom (constitutional monarchy)
Existed: 1947–1975
Shown on the map: 1956–1975
Peak area: 230k km²
Region: Southeast Asia

Origins & foundation

Political history & notable leaders

King Sisavang Vong reigned until 1959, succeeded by Sisavang Vatthana. Politics revolved around the "Three Princes": neutralist Souvanna Phouma, right-wing Boun Oum, and Souphanouvong, leader of the communist Pathet Lao. A first coalition government collapsed in 1958; a 1960 coup by neutralist captain Kong Le triggered a wider civil war, temporarily settled by the 1962 Geneva Agreements on Lao neutrality. The country then became a covert battleground of the Vietnam War: the US backed the royalist army and the Hmong guerrillas of Vang Pao, while North Vietnamese troops sustained the Pathet Lao.

Economy, culture & society

Laos covered 236,800 km² with a population of roughly 3.1 million, largely rural, Buddhist and subsistence-farming. It became, per capita, the most heavily bombed country in history: between 1964 and 1973 the US dropped a planeload of bombs every eight minutes, leaving some 80 million unexploded bomblets.

Territorial extent & key events

The kingdom's borders followed French colonial lines along the Mekong and the Annamite range. US military aid of about $500 million flowed in between 1962 and 1971 alone.

Conflicts & turning points

The February 1973 ceasefire and the 1974 Provisional Government of National Unity unravelled after the fall of Phnom Penh and Saigon in 1975. The Pathet Lao seized power province by province between August and December 1975.

Legacy & present-day status

King Sisavang Vatthana abdicated on 2 December 1975, ending six centuries of monarchy; he and the royal family perished in re-education camps. The communist Lao People's Democratic Republic succeeded the kingdom and rules Laos to this day.

Common questions

What was the Kingdom of Laos?: The Kingdom of Laos was established by constitution on 11 May 1947 as a self-governing state within the French Union, reunifying the Lao territories under the Luang Prabang monarchy. It gained full independence from France on 22 October 1953, was confirmed at the Geneva Conference on 21 July 1954 and joined the United Nations on 14 December 1955.
When did the Kingdom of Laos exist?: The Kingdom of Laos existed 1947–1975. On this map it is drawn 1956–1975.
How large was the Kingdom of Laos?: At its greatest extent drawn on this map, the Kingdom of Laos covered about 230,000 km². That is the largest area the border data gives it across the years it is drawn, not necessarily its greatest extent in history.
Where was the Kingdom of Laos?: The kingdom's borders followed French colonial lines along the Mekong and the Annamite range. US military aid of about $500 million flowed in between 1962 and 1971 alone.
Who ruled the Kingdom of Laos?: King Sisavang Vong reigned until 1959, succeeded by Sisavang Vatthana. Politics revolved around the "Three Princes": neutralist Souvanna Phouma, right-wing Boun Oum, and Souphanouvong, leader of the communist Pathet Lao.
How did the Kingdom of Laos end?: King Sisavang Vatthana abdicated on 2 December 1975, ending six centuries of monarchy; he and the royal family perished in re-education camps. The communist Lao People's Democratic Republic succeeded the kingdom and rules Laos to this day.
What did the economy and culture of the Kingdom of Laos rest on?: Laos covered 236,800 km² with a population of roughly 3.1 million, largely rural, Buddhist and subsistence-farming. It became, per capita, the most heavily bombed country in history: between 1964 and 1973 the US dropped a planeload of bombs every eight minutes, leaving some 80 million unexploded bomblets.

Sources

Every source below was consulted while writing this entry.

Wikipedia: Kingdom of Laos en.wikipedia.org/wiki/Kingdom_of_Laos

This entry was written from the sources above and last updated 10 September 2026.

This entry was researched and drafted with AI from the sources above, and has not been reviewed by a historian. How entries are made

Text available under CC BY-SA 4.0: reuse it with a credit to The World Through Time and a link to this page. Passages drawing on the Wikipedia articles listed above are also licensed CC BY-SA 4.0 by their contributors.

Border geometry for the map itself comes from Cliopatria v0.12 (Seshat Global History Databank, CC-BY-4.0).

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