| Postal Code | 1820 |
| Postal Code Name | Frederiksberg C |
| Region | Capital Region of Denmark |
| Municipality | Frederiksberg Municipality |
| Timezone | Central European Summer Time (CEST) |
| Adjacent Postal Codes | 1620 1621 1622 1806 1809 1810 1811 1812 1813 1814 1815 1816 1818 1819 1822 1823 1824 1825 1826 1827 1828 1829 1850 1851 1852 1853 1854 2000 |