Barangay San Antonio is situated in the northern part of Tacurong City. It is bounded by the Municipality of Lambayong in the north, Barangay Bilumin in the south, Barangay Griño in the west, and Barangay San Rafael in the east.
There are 3 ethnic groups that can be found in Barangay San Antonio— 97 % of which are Ilonggo, 1.52 % are Ilocano, and a few Tagalogs and Cebuanos.
| Description | Area
(Hectares) |
% total Land Area |
| Total Land Area | 300 | 100% |
| Agricultural | 260.5 | 86.83% |
| Residential | 38 | 12.66% |
| School Site & Brgy. Site | 0.75 | 0.25% |
| Industrial | 0.75 | 0.25% |