The CM21 0HW postcode was located in East Hertfordshire, Hertfordshire postcode town, within East of England, England region.
It is now a terminated postcode, it was a Large User postcode introduced in 1996-06 and terminated on 1997-06.
| Name | Type |
|---|---|
| OA21CD | E00119344 |
| LSOA21CD | E01023496 |
| MSOA21CD | E02004886 |
| MSOA21 | Much Hadham & Hunsdon |
| Postcode Area | CM21 |
| Ward | Much Hadham |
| LTLA22 | East Hertfordshire |
| UTLA22 | Hertfordshire |
| Region | East of England |
| Country | England |
| Co-ordinates | [ 0.12456240132129255, 51.80821914283194 ] |