Smallest Provinces Needed to Match Bangkok's Companies, 2026
In short
It takes the 73 smallest of Thailand's 76 other provinces to match Bangkok's 812,799 registered companies as of 17 July 2026. The smallest 72 hold 765,080, which is 94.13 percent of Bangkok. Only the 73rd province, Pathum Thani, pushes the tail past the capital, to 846,336. Bangkok alone holds 40.92 percent of every registered company with a province on record.
How long a tail matches Bangkok?
Almost all of it. Line up the 76 provinces outside Bangkok from smallest to largest and add them up, and the running total stays under Bangkok until the 73rd step. The smallest 72 provinces hold 765,080 registered companies (DBD, 2026). That is 47,719 short of Bangkok's 812,799. Adding Pathum Thani, with 81,256 companies, lifts the total to 846,336. Only Chon Buri, Nonthaburi and Samut Prakan stay outside the tail. Three provinces are all the tail can spare.
Cumulative companies in the smallest provinces, as a share of Bangkok
Figures in percent of Bangkok registered companies.
The curve is slow for most of its length and then climbs steeply once the large provinces join. It crosses 100 percent at the 73rd province.
The tail, step by step
| Smallest provinces added | Cumulative companies | Share of Bangkok |
|---|---|---|
| 10 | 23,608 | 2.90% |
| 20 | 58,786 | 7.23% |
| 30 | 103,754 | 12.77% |
| 40 | 166,541 | 20.49% |
| 52 | 265,385 | 32.65% |
| 60 | 370,577 | 45.59% |
| 65 | 480,584 | 59.13% |
| 70 | 647,359 | 79.65% |
| 72 | 765,080 | 94.13% |
| 73 | 846,336 | 104.13% |
Cumulative registered companies in the smallest provinces outside Bangkok, against Bangkok at 812,799, as of 17 Jul 2026.
Where the tail comes from
The first ten provinces are tiny. Mae Hong Son has 1,569 companies, the fewest of any province. Together the smallest ten hold 23,608, which is 2.90 percent of Bangkok. It takes 52 provinces to reach one third of the capital, at 32.65 percent. The top end is a different world. Chon Buri has 127,023 companies, Nonthaburi 102,370 and Samut Prakan 97,609. Those three, plus Pathum Thani, hold 408,258 between them, 34.79 percent of the 1,173,338 companies in all provinces outside Bangkok. Bangkok on its own is 6.40 times the size of Chon Buri, the next largest.
Why this matters
A business that wants national reach in Thailand does not face 77 markets of similar weight. It faces one giant, a ring of industrial and commuter provinces around it, and a very long tail. Bangkok holds 40.92 percent of all registered companies with a province on record. A sales team, a lender or a policymaker who covers 72 provinces still reaches fewer companies than one that covers the capital. The flip side is opportunity. Each small province is thin, so a local firm there often faces little registered competition. Any plan for regional growth should start from the arithmetic that the tail is wide but light.
Definitions
- Registered company
- A juristic person on the Department of Business Development registry, whether active or dormant.
- Cumulative total
- The running sum of company counts after adding provinces one at a time from smallest to largest.
- Dormant
- A registered company that is not operating, though it remains on the registry.
- Aggregate
- A count or sum across many companies, with no single company or person singled out.
Assumptions
- Province is the registered address, so a firm headquartered in Bangkok may operate elsewhere.
- Counts include dormant companies, about half of the registry.
- 572 companies with no province on record are left out of both sides of the comparison.
- Provinces are ranked by company count only, not by population or area.
- The database refreshed after the national figures of 7 July 2026, so counts reflect rows computed on 17 July 2026.
Methodology
Company counts per province come from the Department of Business Development registry, aggregated by registered province, as of 17 July 2026. The count is registered juristic persons, active or dormant, and is not a count of operating companies. The 76 provinces outside Bangkok were sorted from smallest to largest by company count and summed cumulatively until the total reached Bangkok. A further 572 companies with no province on record are excluded from the tail and from Bangkok. Province is the registered address, which may differ from where work is done.
How we verified this
- Bangkok 812,799 plus the 76 other provinces 1,173,338 plus 572 with no province equals 1,986,709, the table total.
- Smallest 72 provinces: 1,173,338 minus Chon Buri 127,023, Nonthaburi 102,370, Samut Prakan 97,609 and Pathum Thani 81,256 equals 765,080.
- 765,080 divided by 812,799 equals 94.13 percent, a shortfall of 47,719.
- 765,080 plus Pathum Thani 81,256 equals 846,336, which is 104.13 percent of Bangkok, so the answer is 73.
- Bangkok share: 812,799 divided by 1,986,137 equals 40.92 percent of companies with a province.
- Top four outside Bangkok: 127,023 plus 102,370 plus 97,609 plus 81,256 equals 408,258, or 34.79 percent of 1,173,338.
- Bangkok 812,799 divided by Mae Hong Son 1,569 equals 518.04. Bangkok divided by Chon Buri 127,023 equals 6.40.
- Smallest ten sum to 23,608, which is 2.90 percent of Bangkok. Smallest 52 sum to 265,385, or 32.65 percent.
References
- Department of Business Development. (2026). Registered juristic persons by province, aggregate counts. Ministry of Commerce, Thailand. https://www.dbd.go.th/
Frequently asked questions
How many provinces match Bangkok's company count?
The 73 smallest provinces outside Bangkok together hold 846,336 registered companies, passing Bangkok's 812,799. The smallest 72 fall short at 765,080.
How many registered companies does Bangkok have?
Bangkok has 812,799 registered companies as of 17 July 2026, which is 40.92 percent of all companies with a province on record.
Which province has the fewest registered companies?
Mae Hong Son has the fewest, with 1,569 registered companies.
Does Bangkok also lead on revenue?
Revenue is outside the scope of this page. The company count measured here includes dormant firms, so it is not a measure of economic activity.
Cite this page
Chatpong L. (2026). Smallest Provinces Needed to Match Bangkok's Companies, 2026. Max Data Insights. https://maxdatathailand.com/insights/how-many-of-thailands-smallest-provinces-add-up-to-bangkoks-company-count-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.