| Código postal | Localidade / Distrito | Região / Município | Coordenadas |
|---|---|---|---|
| Tsumeb | Eengodi · Oshikoto | -19.24842, 17.71345 | |
| Tsintsabis | Eengodi · Oshikoto | -18.76936, 17.9629 | |
| Oshivelo | Eengodi · Oshikoto | -18.61972, 17.16743 | |
| Wildernis | Eengodi · Oshikoto | -18.83609, 18.01972 | |
| Tsutsab | Eengodi · Oshikoto | -18.87431, 18.10008 | |
| Stilhoek | Eengodi · Oshikoto | -18.9398, 18.02708 | |
| Randeier | Eengodi · Oshikoto | -18.75196, 18.10303 | |
| Oshidundumbe | Eengodi · Oshikoto | -17.9, 16.95 | |
| Ondangwa East | Olukonda Constituency · Oshikoto | -17.93021, 16.0172 | |
| Oniipa | Olukonda Constituency · Oshikoto | -17.91667, 16.03333 | |
| Oshitayi | Olukonda Constituency · Oshikoto | -17.9, 16.01667 | |
| Oshigambo | Olukonda Constituency · Oshikoto | -17.78333, 16.06667 | |
| Oshali | Olukonda Constituency · Oshikoto | -17.95, 16.06667 | |
| Ontananga | Olukonda Constituency · Oshikoto | -18.01441, 16.06074 | |
| Oniihandi | Olukonda Constituency · Oshikoto | -17.91667, 16.01667 | |
| Oneputa | Olukonda Constituency · Oshikoto | -17.85, 16.05 | |
| Omuthiya | Omuntele Constituency · Oshikoto | -18.36463, 16.58146 | |
| Okashana Kelao | Omuntele Constituency · Oshikoto | -18.24571, 16.65858 | |
| Uuntyaye | Omuntele Constituency · Oshikoto | -18.24222, 16.33342 | |
| Oyovu | Omuntele Constituency · Oshikoto | -18.18319, 16.18472 | |
| Othile | Omuntele Constituency · Oshikoto | -18.22549, 16.40244 | |
| Oshiya | Omuntele Constituency · Oshikoto | -18.21257, 16.46993 | |
| Oshiteni | Omuntele Constituency · Oshikoto | -18.33333, 16.15 | |
| Oshilungi | Omuntele Constituency · Oshikoto | -18.15913, 16.37498 | |
| Uukwanambwa | Onayena · Oshikoto | -18.06606, 16.2865 | |
| Utilo | Onayena · Oshikoto | -17.8, 16.63333 | |
| Onyuulaye | Onayena · Oshikoto | -18.03902, 16.47566 | |
| Onyawanyawa | Onayena · Oshikoto | -17.75, 16.61667 | |
| Onyaanya | Onayena · Oshikoto | -18.0619, 16.26197 | |
| Oniiwe | Onayena · Oshikoto | -17.93333, 16.26667 | |
| Oniihwa | Onayena · Oshikoto | -17.88333, 16.21667 | |
| Onguma | Onayena · Oshikoto | -17.9, 16.11667 |
O prefixo postal 21 em Namíbia cobre 32 localidades (Oshikoto, incluindo Tsumeb), na faixa de 21000 a 21307.
Existem 32 códigos postais ativos iniciados por 21 em Namíbia.