Udai Charoen (อุใดเจริญ), code 910303, belongs to Khuan Kalong District, Satun. Agricultural-extension records identify mixed-farming learning centres in village 7, including Ban Phang 120, and a tree-growing learning site in village 9. The OBEC school register places Nikhom Phatthana Phak Tai 3 School at Ban Phang 35 in village 3. These named communities show the tambon beyond a single settlement or office.
Use the village number and community or institution name when arranging a visit. A farm-learning appointment needs confirmation from the host. The current official Thai spelling is อุใดเจริญ; อุไดเจริญ appears as a variant in geographic data. The administrative map reference is separate from the school and farm entrances.
