CO1 1SU maps, stats, and open data
CO1 1SU 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 October 2016.
CO1 1SU maps


Source: OS Open Zoomstack (Ordnance Survey)
Licence: Open Government Licence (requires attribution)
Attribution: Contains OS data © Crown copyright and database right 2026
Source: Open Postcode GeoLicence: Open Government Licence (requires attribution)
Attribution: Contains OS data © Crown copyright and database right 2026; Contains Royal Mail data © Royal Mail copyright and database right 2026; Source: Office for National Statistics licensed under the Open Government Licence v.3.0
CO1 1SU geodata
| Easting | 599768 |
| Northing | 225270 |
| Latitude | 51.890185 |
| Longitude | 0.901660 |
Where is CO1 1SU?
| Country | England |
| Postcode District | CO1 |
CO1 1SU Elevation
Elevation or altitude of CO1 1SU as distance above sea level:
| Metres | Feet |
|---|
| Elevation | 20m | 66ft |
|---|
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.
➜ How high above sea level am I? Find the elevation of your current position using your device's GPS.
Politics
| Ward | Castle |
|---|
| Constituency | Colchester |
|---|
Transport
Nearest bus stops to CO1 1SU
| The George (High Street) | Colchester Town Centre | 69m |
| The George (High Street) | Colchester Town Centre | 78m |
| Angel Court (High Street) | Colchester Town Centre | 128m |
| Angel Court (High Street) | Colchester Town Centre | 136m |
| Greyfriars (High Street) | Colchester Town Centre | 215m |
Nearest railway stations to CO1 1SU
| Colchester Town Station | 0.5km |
| Colchester Station | 1.3km |
| Hythe (Essex) Station | 1.9km |
Broadband
Broadband access in CO1 1SU (2020 data)
| Percentage of properties with Next Generation Access | 100.0% |
| Percentage of properties with Superfast Broadband | 100.0% |
| Percentage of properties with Ultrafast Broadband | 0.0% |
| Percentage of properties with Full Fibre Broadband | 0.0% |
Superfast Broadband is between 30Mbps and 300Mbps
Ultrafast Broadband is > 300Mbps
Broadband limitations in CO1 1SU (2020 data)
| Percentage of properties unable to receive 2Mbps | 0.0% |
| Percentage of properties unable to receive 5Mbps | 0.0% |
| Percentage of properties unable to receive 10Mbps | 0.0% |
| Percentage of properties unable to receive 30Mbps | 0.0% |
Deprivation
77.6% of English postcodes are less deprived than
CO1 1SU:
Food Standards Agency
Three nearest food hygiene ratings to CO1 1SU (metres)
Castle Methodist Church
Slug & Lettuce
Wimpy Bar
➜ Get more ratings from the Food Standards Agency
Nearest post box to CO1 1SU
| | Last Collection | |
|---|
| Location | Mon-Fri | Sat | Distance |
|---|
| Culver Street East | 18:30 | 12:30 | 103m |
| Culver Street East | 18:30 | 12:30 | 105m |
| Hippodrome High Street | 18:30 | 12:30 | 110m |
CO1 1SU ITL and CO1 1SU LAU
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 1SU:
| 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 |
CO1 1SU census areas
The below table lists the Census Output Area (OA), Lower Layer Super Output Area (LSOA), and Middle Layer Super Output Area (MSOA) for CO1 1SU:
| Code | Name |
|---|
| OA | E00109958 | |
|---|
| LSOA | E01021649 | Colchester 007D |
|---|
| MSOA | E02004512 | Colchester 007 |
|---|
Nearest postcodes to CO1 1SU