Top Province Share of Regional Revenue in Thailand (2026)
In short
Bangkok holds 78.41 percent of central Thailand's reported revenue, making the central region the most one-city economy in the country. Chiang Mai takes 43.81 percent of the north. Chon Buri takes 43.22 percent of the east, but Rayong sits just behind at 36.3 percent. Nakhon Ratchasima holds only 22.71 percent of the northeast, the most spread region. Data as of 17 July 2026.
How dependent is each region on its biggest province?
It depends on the region, and the gap is huge. Bangkok books 50.55 trillion baht of the 64.46 trillion baht reported by central provinces. That is a 78.41 percent share (DBD, 2026). No other region comes close. Chiang Mai holds 43.81 percent of the north. Chon Buri holds 43.22 percent of the east. Ratchaburi holds 42.66 percent of the west. Songkhla takes 28.06 percent of the south. Nakhon Ratchasima takes 22.71 percent of the northeast, the flattest profile of the six. Read the list as a dependency ranking. A region with a high share leans hard on one provincial economy.
Top province share of regional revenue
- Central: Bangkok78
- North: Chiang Mai44
- East: Chon Buri43
- West: Ratchaburi43
- South: Songkhla28
- Northeast: Nakhon Ratchasima23
Figures in percent of regional revenue.
Each bar is the biggest province's share of the summed revenue of all provinces in its region. Regions follow the six-region Royal Institute grouping.
Anchor province and runner-up by region
| Region | Provinces | Top province | Top province revenue, billion baht | Share of region | Runner-up | Runner-up share | Lead over runner-up, times |
|---|---|---|---|---|---|---|---|
| Central | 22 | Bangkok | 50,545 | 78.41% | Samut Prakan | 7.48% | 10 |
| North | 9 | Chiang Mai | 529 | 43.81% | Chiang Rai | 24.28% | 2 |
| East | 7 | Chon Buri | 3,811 | 43.22% | Rayong | 36.3% | 1 |
| West | 5 | Ratchaburi | 374 | 42.66% | Kanchanaburi | 18.4% | 2 |
| South | 14 | Songkhla | 657 | 28.06% | Surat Thani | 17.6% | 2 |
| Northeast | 20 | Nakhon Ratchasima | 535 | 22.71% | Khon Kaen | 14.95% | 2 |
Revenue by province of registered head office, as of 17 Jul 2026. Revenue in billion baht.
The east has two anchors, the north has one
The east looks concentrated, but the second half of the picture matters. Chon Buri earns 3.81 trillion baht. Rayong earns 3.2 trillion baht. Chon Buri leads Rayong by only 1.19 times. Together the two hold 79.52 percent of eastern revenue. The north is different. Chiang Mai leads Chiang Rai by 1.8 times. The west shows the widest gap among the mid-sized regions, where Ratchaburi is 2.32 times Kanchanaburi. The northeast has no such anchor. Nakhon Ratchasima leads Khon Kaen by just 1.52 times. Twenty provinces share the region.
Bangkok without the halo
Strip Bangkok out and the central region still leans on one province. The remaining central provinces report 13.92 trillion baht. Samut Prakan reports 4.82 trillion baht of it, a 34.65 percent share. That is a heavier lean than Songkhla has on the south. The central region is therefore concentrated twice, first on the capital and then on the industrial belt to its southeast.
Why this matters
A regional plan built on the biggest province misreads the region. A lender, a supplier or a policy team that treats the east as one market is really betting on two provinces. A distributor that treats the northeast as a single territory faces the opposite problem, because no anchor exists and demand sits in 20 places. Concentration also cuts risk both ways. A one-city region gets scale and a clear place to open an office, but a single flood, plant closure or policy shift can move the regional total. A spread region has no single point of failure at the provincial level. Use the share as a first screen, then look at the runner-up before you commit to an anchor city.
Definitions
- Top province share
- The revenue of a region's largest province divided by the summed revenue of every province in that region.
- Region
- One of six groups of provinces under the Royal Institute grouping: central, north, northeast, east, west and south.
- Reported revenue
- Total revenue on filed financial statements, attributed to the province of the registered head office.
- Lead over runner-up
- The top province's revenue divided by the second province's revenue in the same region.
Assumptions
- Revenue is attributed to the registered head office province, so multi-site firms count entirely where they are registered.
- Only companies with a filed financial statement contribute revenue.
- Regional groupings follow the Royal Institute six-region scheme. Other schemes, such as the NESDC grouping, would shift some shares.
- The rows were refreshed on 17 July 2026, later than the 7 July anchors used elsewhere on the site.
Methodology
Revenue comes from the Department of Business Development registry, summed by province of registered head office for companies that filed a financial statement, as of the 17 July 2026 refresh. Provinces are grouped into six regions using the Royal Institute grouping, which places Bangkok, its surrounding provinces and the lower north in the central region. Regional revenue is the sum of the province totals for that region, not an official regional accounts figure. Rows with no province code are excluded. Revenue is booked where a company is registered, not always where the sales happen.
How we verified this
- Central: Bangkok 50,545,042,342,775 baht divided by regional total 64,461,050,143,413 baht equals 78.41 percent.
- North: Chiang Mai 528,719,407,450 divided by 1,206,779,773,953 equals 43.81 percent. Chiang Rai 292,968,493,878 divided by the same total equals 24.28 percent.
- East: Chon Buri 3,811,069,179,217 divided by 8,817,631,466,202 equals 43.22 percent. Rayong 3,200,467,066,498 divided by the same total equals 36.30 percent. Together they equal 79.52 percent. Chon Buri divided by Rayong equals 1.19.
- West: Ratchaburi 373,507,755,624 divided by 875,481,578,858 equals 42.66 percent. Kanchanaburi equals 18.40 percent. Ratchaburi divided by Kanchanaburi equals 2.32.
- South: Songkhla 657,219,959,616 divided by 2,342,095,074,409 equals 28.06 percent. Surat Thani equals 17.60 percent.
- Northeast: Nakhon Ratchasima 534,495,649,226 divided by 2,354,057,400,183 equals 22.71 percent. Khon Kaen equals 14.95 percent. Ratio equals 1.52.
- Central without Bangkok: 64,461,050,143,413 minus 50,545,042,342,775 equals 13,916,007,800,638. Samut Prakan 4,821,545,715,425 divided by that equals 34.65 percent.
- Province counts by region sum to 77: 22 plus 9 plus 7 plus 5 plus 14 plus 20. The six regional totals sum to 80.06 trillion baht, slightly below the 80.15 trillion national anchor, and rows with no valid province code are excluded.
References
- Department of Business Development. (2026). Registered juristic persons and financial statement aggregates by province. Ministry of Commerce, Thailand. https://www.dbd.go.th/
Frequently asked questions
Which Thai region depends most on one province?
The central region. Bangkok holds 78.41 percent of its reported revenue as of 17 July 2026.
Which region has the most spread revenue?
The northeast. Nakhon Ratchasima, its largest province, holds 22.71 percent of regional revenue.
Is Chon Buri the sole anchor of the east?
No. Chon Buri holds 43.22 percent, but Rayong holds 36.3 percent, so the east has two anchors.
Does this measure where sales happen?
No. Revenue is counted in the province of each company's registered head office.
Cite this page
Chatpong L. (2026). Top Province Share of Regional Revenue in Thailand (2026). Max Data Insights. https://maxdatathailand.com/insights/how-much-of-each-thai-region-revenue-sits-in-its-top-province-2026
Data & corrections
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Written by
Chatpong L.Founder, Max Data, Max Solutions Co., Ltd.
Chatpong L. leads Max Data, a company-intelligence platform built on Thailand's official business registry. He writes about the structure of the Thai economy using primary registry data. His work covers company formation, industry concentration, and regional business activity.
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This page reports company-level and aggregate statistics only. It names no individuals and makes no claims about any person. Figures are provided for information and may be revised as source data updates.