| Código postal | Localidade / Distrito | Região / Município | Coordenadas |
|---|---|---|---|
| Ondangwa | Okaku Constituency · Oshana | -17.90824, 15.98037 | |
| Oshittayi | Okaku Constituency · Oshana | -17.86404, 15.99198 | |
| Oshikondiilongo | Okaku Constituency · Oshana | -17.74313, 15.93651 | |
| Oshekasheka | Okaku Constituency · Oshana | -17.70336, 15.9144 | |
| Oshaakondwa | Okaku Constituency · Oshana | -17.91667, 16.0 | |
| Onzinzi | Okaku Constituency · Oshana | -17.76667, 16.0 | |
| Onyeka | Okaku Constituency · Oshana | -17.72154, 15.98634 | |
| Ondjondjo | Okaku Constituency · Oshana | -17.9, 15.98333 | |
| Ongwediva | Ongwediva District · Oshana | -17.77198, 15.76564 | |
| Omusimboti | Ongwediva District · Oshana | -17.89837, 15.75024 | |
| Omupanda | Ongwediva District · Oshana | -17.70772, 15.81331 | |
| Ompundia | Ongwediva District · Oshana | -17.91013, 15.7276 | |
| Omege | Ongwediva District · Oshana | -17.86026, 15.73904 | |
| Omahahi | Ongwediva District · Oshana | -17.70062, 15.77139 | |
| Okatana | Ongwediva District · Oshana | -17.73323, 15.72623 | |
| Ohambungu | Ongwediva District · Oshana | -17.73783, 15.83852 | |
| Oshakati | Oshakati East · Oshana | -17.78833, 15.70436 | |
| Ehangano | Oshakati East · Oshana | -17.79405, 15.61178 | |
| Uukwiwongwe | Oshakati East · Oshana | -17.87247, 15.64766 | |
| Oniimwandi | Oshakati East · Oshana | -17.79613, 15.64912 | |
| Likelo | Oshakati East · Oshana | -17.69363, 15.7193 | |
| Emonso | Oshakati East · Oshana | -17.75236, 15.6531 | |
| Amutanga | Oshakati East · Oshana | -17.7, 15.68333 | |
| Afoti | Oshakati East · Oshana | -18.02185, 15.33167 | |
| Oshakati West | Oshakati West District · Oshana | -17.78333, 15.68333 | |
| Oshakati West North | Oshakati West District · Oshana | -17.77533, 15.69133 | |
| Uullungawaanayaangolo | Uukwiyu · Oshana | -18.08819, 15.85179 | |
| Uukwiyushona | Uukwiyu · Oshana | -18.02323, 15.93272 | |
| Oshipumbu | Uukwiyu · Oshana | -18.02982, 15.7317 | |
| Oshikondiilonga | Uukwiyu · Oshana | -18.03822, 15.9757 | |
| Onkumbwiimbwi | Uukwiyu · Oshana | -18.03947, 16.0285 | |
| Onamayo | Uukwiyu · Oshana | -18.00801, 15.75299 | |
| Omukandu | Uukwiyu · Oshana | -18.04909, 15.86218 | |
| Omukundagwana | Uukwiyu · Oshana | -18.03333, 15.83333 |
O prefixo postal 20 em Namíbia cobre 34 localidades (Oshana, incluindo Ondangwa), na faixa de 20000 a 20407.
Existem 34 códigos postais ativos iniciados por 20 em Namíbia.