Postcode areas 03XXX
- Postcode area 03042 Cottbus
- Postcode area 03044 Cottbus
- Postcode area 03046 Cottbus
- Postcode area 03048 Cottbus
- Postcode area 03050 Cottbus
- Postcode area 03051 Cottbus
- Postcode area 03052 Cottbus
- Postcode area 03053 Cottbus
- Postcode area 03054 Cottbus
- Postcode area 03055 Cottbus
- Postcode area 03058 Neuhausen/Spree
- Postcode area 03096 Burg/Spreewald u.a.
- Postcode area 03099 Kolkwitz
- Postcode area 03103 Neu-Seeland, Neupetershain
- Postcode area 03116 Drebkau
- Postcode area 03119 Welzow
- Postcode area 03130 Spremberg, Tschernitz u.a.
- Postcode area 03149 Forst/ Lausitz
- Postcode area 03159 Döbern
- Postcode area 03172 Guben, Schenkendöbern
- Postcode area 03185 Peitz
- Postcode area 03197 Jänschwalde
- Postcode area 03205 Calau, Bronkow
- Postcode area 03222 Lübbenau/ Spreewald
- Postcode area 03226 Vetschau
- Postcode area 03229 Altdöbern, Luckaitztal
- Postcode area 03238 Finsterwalde
- Postcode area 03246 Crinitz
- Postcode area 03249 Sonnewalde
- Postcode area 03253 Doberlug-Kirchhain