The TS21 3YX postcode was located in County Durham, County Durham postcode town, within North East, England region.
It is now a terminated postcode, it was a Large User postcode introduced in 1997-12 and terminated on 1999-06.
| Name | Type |
|---|---|
| OA21CD | E00105705 |
| LSOA21CD | E01020828 |
| MSOA21CD | E02004339 |
| MSOA21 | Sedgefield & Bishop Middleham |
| Postcode Area | TS21 |
| Ward | Sedgefield |
| LTLA22 | County Durham |
| UTLA22 | County Durham |
| Region | North East |
| Country | England |
| Co-ordinates | [ -1.4373309843256634, 54.648362950405016 ] |