| Official Name: | Tha Pho Si |
| Native Name: | ท่าโพธิ์ศรี |
| Settlement Type: | Subdistrict |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type2: | Province |
| Subdivision Name2: | Ubon Ratchathani |
| Subdivision Type3: | District |
| Subdivision Name3: | Det Udom |
| Subdivision Type4: | Mubans |
| Subdivision Name4: | 8 |
| Subdivision Type5: | Number of Mu |
| Subdivision Name5: | 11 |
| Established Title: | Subdistrict established |
| Established Date: | 1976 |
| Population Total: | 7056 |
| Population As Of: | 2021 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Postal Code Type: | Postal code |
| Postal Code: | 34160 |
Tha Pho Si (Thai: ท่าโพธิ์ศรี) is a tambon (subdistrict) located in the central region of Det Udom District, in Ubon Ratchathani Province, Thailand. In 2021, it had a population of 7,056 people. Neighbouring subdistricts are (clockwise from the south) Top Hu, Non Sombun, Na Charoen, Mueang Det, and Klang.
The area was first settled in the late 1800s, with the first village, Bak Waeng (บักแหว่ง), governed by Mueang Det, the district capital.[1] The settlement was eventually renamed "Tha Pho Si" in 1902, after the giant sandbox tree (Thai: โพธิ์ศรี; Pho Si) that was founded near the waterfront pavilion on the bank of the Lam Dom Yai River.[1]
The Tha Pho Si subdistrict was formed in 1976 by combining two areas splitting from Mueang Det and Klang, which consisted of five and one villages, respectively.[2]
The tambon is located in the central region of the Det Udom district, on the low river plain of the Lam Dom Yai River.[1]
The Tha Pho Si subdistrict is divided into eight administrative villages (mubans; หมู่บ้าน), one of which, Tha Pho Si village, was further divided into four community groups (Mu; หมู่).[3] The entire area is governed by the Subdistrict Administrative Organization of Tha Pho Si (องค์การบริหารส่วนตำบลท่าโพธิ์ศรี; Tha Pho Si SAO).[3]
As of the 2021 census, it had a population of 7,056 people with 2,550 households. The following is a list of the subdistrict's mubans, which roughly correspond to the villages.[3]
| Village | Group (Mu) | Household | Population | ||
|---|---|---|---|---|---|
| Romanized name | Thai name | ||||
| Tha Pho Si | ท่าโพธิ์ศรี | ||||
| Pho Sa-nga | โพธิ์สง่า | ||||
| Non Li | โนนหลี่ | ||||
| Non That | โนนธาตุ | ||||
| Waree Udom | วารีอุดม | ||||
| Non Swang | โนนสว่าง | ||||
| Na Dong | นาดง | ||||
| Thong Lang | ทองหลาง | ||||
| Total | |||||