| Postal Code | Locality / District | Administrative Area | Coordinates |
|---|---|---|---|
| Erdenetsogt | Bayan-Ovoo District · Ömnögovi Province | 42.97238, 106.11866 | |
| Doloo Sharadzagiin Süme | Bayan-Ovoo District · Ömnögovi Province | 42.96667, 106.11667 | |
| Bayan Ovoo | Bayan-Ovoo District · Ömnögovi Province | 43.01667, 105.53333 | |
| Bayan-Ovoo Sum | Bayan-Ovoo Sum District · Ömnögovi Province | 42.75708, 105.96403 | |
| Bayan-Ovoo Sum North | Bayan-Ovoo Sum District · Ömnögovi Province | 42.76508, 105.97203 | |
| Dalay | Bayandalay · Ömnögovi Province | 43.46787, 103.51284 | |
| Tsagaan Uulaiin Süme | Bayandalay · Ömnögovi Province | 41.98333, 103.25 | |
| Tsagaan Deresenii Hural | Bayandalay · Ömnögovi Province | 43.35, 103.16667 | |
| Lamaiin Hüryee | Bayandalay · Ömnögovi Province | 43.75, 103.3 | |
| Hongor Oboo Suma | Bayandalay · Ömnögovi Province | 43.46667, 103.5 | |
| Bulgan | Bulgan District · Ömnögovi Province | 44.09745, 103.54288 | |
| Norboiin Salbari Horshoo | Bulgan District · Ömnögovi Province | 43.87222, 103.62972 | |
| Dalandzadgad | Dalandzadgad District · Ömnögovi Province | 43.57083, 104.425 | |
| Habchil Örtöö | Dalandzadgad District · Ömnögovi Province | 43.41667, 104.30083 | |
| Godoli Balgasanii Hiid | Dalandzadgad District · Ömnögovi Province | 43.33333, 104.73333 | |
| Argalinta Suma | Dalandzadgad District · Ömnögovi Province | 43.47056, 104.65167 | |
| Urt | Gurvantes · Ömnögovi Province | 43.23245, 101.04813 | |
| Tsagaan Subarga Hural | Gurvantes · Ömnögovi Province | 43.05, 101.21667 | |
| Tost | Gurvantes · Ömnögovi Province | 43.23778, 101.03944 | |
| Ojimin Hural | Gurvantes · Ömnögovi Province | 43.2, 100.71667 | |
| Obooto Hural | Gurvantes · Ömnögovi Province | 42.96667, 101.5 | |
| Baruun Goyotoyn Hiid | Gurvantes · Ömnögovi Province | 43.58333, 101.16667 | |
| Ihbulag | Hanbogd · Ömnögovi Province | 43.2, 107.2 | |
| Tsohyootoyn Hiid | Hanbogd · Ömnögovi Province | 43.66667, 107.21667 | |
| Tsogtsol Süme | Hanbogd · Ömnögovi Province | 43.08333, 107.45 | |
| Tsagaan Tologoy Hiid | Hanbogd · Ömnögovi Province | 43.16667, 107.15 | |
| Jibhalanta Suma | Hanbogd · Ömnögovi Province | 42.98333, 106.7 | |
| Demchig Hiid | Hanbogd · Ömnögovi Province | 43.12556, 107.11861 | |
| Baga Modo Hiid | Hanbogd · Ömnögovi Province | 42.75, 106.8 | |
| Aguy Süme Hiid | Hanbogd · Ömnögovi Province | 42.58333, 107.8 | |
| Ögöömör | Hanhongor · Ömnögovi Province | 43.78336, 104.48067 | |
| Üydzen Örtöö | Hanhongor · Ömnögovi Province | 44.16667, 104.5 | |
| Mani Hiid | Hanhongor · Ömnögovi Province | 43.8, 104.2 | |
| Doboiin Hiid | Hanhongor · Ömnögovi Province | 44.0, 104.88333 | |
| Artsatayn Shiliin Hiid | Hanhongor · Ömnögovi Province | 43.8, 104.68333 | |
| Tsoohor | Hürmen · Ömnögovi Province | 43.30657, 104.07417 | |
| Shuluutayn Hiid | Hürmen · Ömnögovi Province | 43.2, 104.0 | |
| Hushuu Hural | Hürmen · Ömnögovi Province | 43.6, 103.9 | |
| Sharhulsan | Mandal-Ovoo District · Ömnögovi Province | 44.65, 104.05 | |
| Shara Hulasa Hiid | Mandal-Ovoo District · Ömnögovi Province | 44.65, 104.06667 | |
| Mandal Ovoo | Mandal-Ovoo District · Ömnögovi Province | 44.36667, 104.3 | |
| Hanaiin Tsagaan Subarga Hiid | Mandal-Ovoo District · Ömnögovi Province | 44.25, 104.23333 | |
| Dörbön Derite Örtöö | Mandal-Ovoo District · Ömnögovi Province | 44.38333, 104.53333 | |
| Üydzen | Manlay · Ömnögovi Province | 44.08216, 106.86985 | |
| Shulen | Manlay · Ömnögovi Province | 43.95, 107.85 | |
| Hara Noyonii Hiid | Manlay · Ömnögovi Province | 44.3, 106.6 | |
| Döchiin Hural | Manlay · Ömnögovi Province | 44.08333, 106.41667 | |
| Dashi Choynbil Hiid | Manlay · Ömnögovi Province | 43.91667, 107.7 | |
| Boro Hiid | Manlay · Ömnögovi Province | 44.5, 107.35 | |
| Bayan Bulagiin Hural | Manlay · Ömnögovi Province | 44.25, 106.8 | |
| Sangiyn Dalay | Nomgon Sum · Ömnögovi Province | 42.84199, 105.13796 | |
| Ulaan Ergiin Hural | Nomgon Sum · Ömnögovi Province | 42.2725, 105.19639 | |
| Ehin Dzagiin Hural | Nomgon Sum · Ömnögovi Province | 42.48333, 104.96667 | |
| Noyon Suma | Noyon · Ömnögovi Province | 43.17361, 102.13194 | |
| Gandzagatayn Hüryee | Noyon · Ömnögovi Province | 43.0, 102.2 | |
| Saynshand | Sevrey · Ömnögovi Province | 43.61667, 102.53333 | |
| Tsagaan Subarga Hural | Sevrey · Ömnögovi Province | 43.60083, 102.19222 | |
| Dugang Goliin Hural | Sevrey · Ömnögovi Province | 44.0, 102.4 | |
| Doloon | Tsogt-Ovoo · Ömnögovi Province | 44.42446, 105.32078 | |
| Buha Dolon | Tsogt-Ovoo · Ömnögovi Province | 44.43333, 105.3 | |
| Abarahaiin Süme | Tsogt-Ovoo · Ömnögovi Province | 44.38333, 105.55 | |
| Baruunsuu | Tsogttsetsiy · Ömnögovi Province | 43.65595, 105.75577 | |
| Shireeteyn Hiid | Tsogttsetsiy · Ömnögovi Province | 43.56667, 106.01667 | |
| Nalihin Dugang | Tsogttsetsiy · Ömnögovi Province | 43.2, 105.58333 | |
| Dashilingiin Hural | Tsogttsetsiy · Ömnögovi Province | 43.71667, 106.13333 | |
| Baruun Hural | Tsogttsetsiy · Ömnögovi Province | 43.75, 105.56667 |
Postal code prefix 31 in Mongolia covers 65 localities (primarily in Ömnögovi Province, including Erdenetsogt), spanning from 310000 to 311504.
There are 66 active postal codes starting with 31 in Mongolia. Use the interactive directory table above to filter by locality or copy any code in one click.