Velg ønsket postnummer i Indre Østfold

• 1807 Askim
• 1808 Askim
• 1809 Askim
• 1811 Askim
• 1812 Askim
• 1813 Askim
• 1814 Askim
• 1815 Askim
• 1820 Spydeberg
• 1821 Spydeberg
• 1823 Knapstad
• 1825 Tomter
• 1827 Hobøl
• 1830 Askim
• 1831 Askim
• 1832 Askim
• 1850 Mysen
• 1852 Mysen
• 1859 Slitu
• 1860 Trøgstad
• 1866 Båstad
• 1878 Hærland
• 1880 Eidsberg