About Sum Sao Subdistrict
Sum Sao Subdistrict is an official administrative tambon of Phen District in Udon Thani, Thailand. Its official Thai name is สุมเส้า and its six-digit administrative code is 411905.
Subdistrict guide
Sum Sao Subdistrict
Sum Sao Subdistrict is an official tambon in Phen District, Udon Thani, Thailand.
Official source · OCHA COD-AB Thailand (Royal Thai Survey Department source), reconciled to current DOPA codesUnderstand the areas
Explore the areas within Sum Sao Subdistrict.
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View this section with the complete guide →- Last reviewed
- 15 September 2026
- Content owner
- Thailand Navigator Editorial Lead
- Page type
- Subdistrict guide