| Locality | Post Code |
|---|---|
| Beilong, Houlong (北龍里) | 356011 |
| Buding, Houlong (埔頂里) | 356002, 356003, 356008 |
| Dashan, Houlong (大山里) | 356004, 356005 |
| Dazhuang, Houlong (大庄里) | 356001, 356008, 356012 |
| Dongming, Houlong (東明里) | 356003 |
| Fengfu, Houlong (豐富里) | 356002, 356008 |
| Funing, Houlong (福寧里) | 356007 |
| Fuxing, Houlong (復興里) | 356001, 356008 |
| Haibao, Houlong (海寶里) | 356004 |
| Haibu, Houlong (海埔里) | 356000 |
| Longjin, Houlong (龍津里) | 356010 |
| Longkeng, Houlong (龍坑里) | 356007 |
| Nangang, Houlong (南港里) | 356010 |
| Nanlong, Houlong (南龍里) | 356009, 356012 |
| Shuiwei, Houlong (水尾里) | 356006 |
| Waibu, Houlong (外埔里) | 356005 |
| Wanbao, Houlong (灣寶里) | 356004 |
| Xiaoyi, Houlong (校椅里) | 356001, 356002, 356008 |
| Xinmin, Houlong (新民里) | 356008 |
| Xiushui, Houlong (秀水里) | 356006 |
| Xizhou, Houlong (溪洲里) | 356006, 356007 |
| Zhonghe, Houlong (中和里) | 356010 |
| Zhonglong, Houlong (中龍里) | 356011 |