| Ankeng, Sanxia (安坑里) |
237014, 237142, 237143, 237144, 237145 |
| Anxi, Sanxia (安溪里) |
237001, 237009, 237010, 237016 |
| Bazhang, Sanxia (八張里) |
237005 |
| Chajiao, Sanxia (插角里) |
237003, 237124, 237125, 237126, 237127, … |
| Chengfu, Sanxia (成福里) |
237013, 237014, 237146, 237147, 237148 |
| Dabu, Sanxia (大埔里) |
237002, 237005, 237007, 237010, 237136, … |
| Erjiu, Sanxia (二鬮里) |
237002, 237007, 237209 |
| Hongdao, Sanxia (弘道里) |
237002, 237101, 237102, 237103 |
| Jiaoxi, Sanxia (礁溪里) |
237005, 237016, 237017, 237166, 237207 |
| Jiatian, Sanxia (嘉添里) |
237010, 237137, 237138, 237212 |
| Jieshou, Sanxia (介壽里) |
237017, 237017, 237165 |
| Jinzhen, Sanxia (金圳里) |
237003, 237120, 237121, 237122, 237123 |
| Longbu, Sanxia (龍埔里) |
237012, 237018, 237019, 237201, 237619 |
| Longen, Sanxia (龍恩里) |
237019, 237020, 237021, 237303, 237629, … |
| Longxue, Sanxia (龍學里) |
237020, 237021, 237623, 237624, 237625, … |
| Sanxia, Sanxia (三峽里) |
237006, 237011, 237204 |
| Tianfu, Sanxia (添福里) |
237000 |
| Wuliao, Sanxia (五寮里) |
237003, 237104, 237105, 237106, 237107, … |
| Xibei, Sanxia (溪北里) |
237008, 237017, 237132, 237133, 237134, … |
| Xidong, Sanxia (溪東里) |
237013, 237017, 237315, 237416 |
| Xinan, Sanxia (溪南里) |
237008, 237008, 237135 |
| Xiuchuan, Sanxia (秀川里) |
237017, 237018, 237018 |
| Yongguan, Sanxia (永舘里) |
237006, 237015, 237018, 237019, 237410, … |
| Youmu, Sanxia (有木里) |
237003, 237114, 237115, 237116, 237117, … |
| Yuanshan, Sanxia (鳶山里) |
237011, 237012, 237015, 237141, 237205, … |
| Zhongbu, Sanxia (中埔里) |
237011, 237139, 237140, 237202 |