GU1 3AA lies on High Street in Guildford. GU1 3AA is located in the Castle electoral ward, within the local authority district of Guildford and the English Parliamentary constituency of Guildford. The Sub Integrated Care Board (ICB) Location is NHS Surrey Heartlands ICB - 92A and the police force is Surrey. This postcode has been in use since January 1980.


| Easting | 499756 |
| Northing | 149492 |
| Latitude | 51.235901 |
| Longitude | -0.572493 |
| Street | High Street |
| Town/City | Guildford |
| Country | England |
| Postcode District | GU1 |
Elevation or altitude of GU1 3AA as distance above sea level:
| Metres | Feet | |
|---|---|---|
| Elevation | 50m | 164ft |
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 | Guildford |
125, HIGH STREET, GUILDFORD, GU1 3AA 2003 5 DEC £1,261,000 |
| Library (North Street) | Guildford | 116m |
| Library (North Street) | Guildford | 126m |
| Library (North Street) | Guildford | 131m |
| Millbrook | Guildford | 286m |
| Millbrook | Guildford | 288m |
| Guildford Station | 0.6km |
| London Road (Guildford) Station | 0.7km |
| Shalford (Surrey) Station | 2.4km |



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| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Tunsgate Arch | 19:00 | 12:15 | 34m |
| Haydon Place | 18:30 | 12:00 | 116m |
| Guildford Post Office | 19:00 | 13:00 | 155m |
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 GU1 3AA:
| ITL 1 Code | Name |
|---|---|
| TLJ | South East (England) |
| ITL 2 Code | Name |
| TLJ2 | Surrey, East and West Sussex |
| ITL 3 Code | Name |
| TLJ25 | West Surrey |
| LAU 1 Code | Name |
| E07000209 | Guildford |
The below table lists the Census Output Area (OA), Lower Layer Super Output Area (LSOA), and Middle Layer Super Output Area (MSOA) for GU1 3AA:
| Code | Name | |
|---|---|---|
| OA | E00155334 | |
| LSOA | E01030455 | Guildford 013E |
| MSOA | E02006356 | Guildford 013 |
| GU1 3HQ | High Street | 29m |
| GU1 3AD | High Street | 32m |
| GU1 4LB | Market Street | 38m |
| GU1 3DP | High Street | 54m |
| GU1 3HJ | High Street | 63m |
| GU1 4AB | North Street | 74m |
| GU1 3HE | High Street | 76m |
| GU1 4AW | North Street | 90m |
| GU1 3QT | Tunsgate | 100m |
| GU1 4AH | North Street | 117m |