The 20 largest provinces in Thailand
The top 3 according to 24 votes from people: Nakhon Ratchasima Province · Tak Province · Surat Thani Province. (Updated Dec 1, 2025.)
Chiang Mai is Thailand's largest province, covering more than 22,000 square kilometres, followed by Nakhon Ratchasima and Kanchanaburi. The 20 provinces with the largest area, according to the Department of Provincial Administration of the Ministry of Interior.
Automatically translated (original in ไทย). See the original
Top 20
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1
Nakhon Ratchasima Province
No. 2. Area: 20,493.964 km². The largest province in the Northeast (Isan).
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2
Tak Province
No. 5. Area: 13,952.997 km².
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3
Surat Thani Province
No. 6. Area: 12,891.469 km². The largest province in the South.
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4
Chiang Mai Province
No. 1. Area: 22,311.074 km². Thailand's largest province.
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5
Lampang Province
No. 10. Area: 12,533.961 km².
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6
Khon Kaen Province
No. 15. Area: 10,885.991 km².
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7
Buriram Province
No. 17. Area: 10,322.885 km².
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8
Ubon Ratchathani Province
No. 4. Area: 15,774.000 km².
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9
Chaiyaphum Province
No. 7. Area: 12,778.287 km².
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10
Kanchanaburi Province
No. 3. Area: 19,483.148 km².
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11
Mae Hong Son Province
No. 8. Area: 12,681.259 km².
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12
Phetchabun Province
No. 9. Area: 12,668.416 km².
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13
Udon Thani Province
No. 11. Area: 11,730.302 km².
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14
Chiang Rai Province
No. 12. Area: 11,678.400 km².
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15
Nan Province
No. 13. Area: 11,472.072 km².
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16
Phitsanulok Province
No. 16. Area: 10,815.854 km².
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17
Nakhon Si Thammarat Province
No. 18. Area: 9,942.502 km².
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18
Sakon Nakhon Province
No. 19. Area: 9,605.764 km².
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19
Nakhon Sawan Province
No. 20. Area: 9,597.677 km².
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20
Loei Province
No. 14. Area: 11,424.612 km².
How is this ranking ordered? By people's votes: each ▲ adds a point and each ▼ takes one away. Anyone can vote and add what is missing.
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