CO1 1SB is located in the Castle electoral ward, within the local authority district of Colchester and the English Parliamentary constituency of Colchester. The Sub Integrated Care Board (ICB) Location is NHS Suffolk and North East Essex ICB - 06T and the police force is Essex. This postcode has been in use since January 1980.
| Easting | 599353 |
| Northing | 225951 |
| Latitude | 51.896437 |
| Longitude | 0.896001 |
| Country | England |
| Postcode District | CO1 |
Elevation or altitude of CO1 1SB as distance above sea level:
| Metres | Feet | |
|---|---|---|
| Elevation | 10m | 33ft |
Elevation is measured from the approximate centre of the postcode, to the nearest point on an OS contour line from OS Terrain 50, which has contour spacing of ten vertical metres.
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| Ward | Castle |
|---|---|
| Constituency | Colchester |
MAJESTIC WINE, NORTH STATION ROAD, COLCHESTER, CO1 1SB 1997 30 APR £37,500 |
| The Albert (North Station Road) | Colchester | 44m |
| The Albert (North Station Road) | Colchester | 55m |
| Causton Road (North Station Road) | Colchester | 142m |
| Causton Road (North Station Road) | Colchester | 210m |
| Catchpool Road (Cowdray Avenue) | Colchester | 221m |
| Colchester Station | 0.5km |
| Colchester Town Station | 1.3km |
| Hythe (Essex) Station | 2.5km |



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| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Sepentine Walk | 18:30 | 12:00 | 54m |
| North Station Road Post Office | 18:30 | 12:00 | 213m |
| Clarendon Way | 18:30 | 12:00 | 327m |
The below table lists the International Territorial Level (ITL) codes (formerly Nomenclature of Territorial Units for Statistics (NUTS) codes) and Local Administrative Units (LAU) codes for CO1 1SB:
| ITL 1 Code | Name |
|---|---|
| TLH | East |
| ITL 2 Code | Name |
| TLH3 | Essex |
| ITL 3 Code | Name |
| TLH34 | Essex Haven Gateway |
| LAU 1 Code | Name |
| E07000071 | Colchester |
The below table lists the Census Output Area (OA), Lower Layer Super Output Area (LSOA), and Middle Layer Super Output Area (MSOA) for CO1 1SB:
| Code | Name | |
|---|---|---|
| OA | E00109972 | |
| LSOA | E01021650 | Colchester 007E |
| MSOA | E02004512 | Colchester 007 |
| CO1 1SE | North Station Road | 46m |
| CO1 1SF | Morten Road | 72m |
| CO1 1RU | Albert Street | 90m |
| CO1 1RP | John Harper Street | 91m |
| CO1 1RX | Albert Street | 96m |
| CO1 1RB | North Station Road | 103m |
| CO1 1RQ | North Station Road | 108m |
| CO1 1SG | Orchard Road | 113m |
| CO1 1RY | Mercers Way | 120m |
| CO1 1SJ | Colne Bank Avenue | 132m |