NN1 1DA lies on St Giles Square in Northampton. NN1 1DA is located in the Castle electoral ward, within the unitary authority of West Northamptonshire and the English Parliamentary constituency of Northampton South. The Sub Integrated Care Board (ICB) Location is NHS Northamptonshire ICB - 78H and the police force is Northamptonshire. This postcode has been in use since January 1980.


| Easting | 475548 |
| Northing | 260439 |
| Latitude | 52.236984 |
| Longitude | -0.895097 |
| Street | St Giles Square |
| Town/City | Northampton |
| Country | England |
| Postcode District | NN1 |
Elevation or altitude of NN1 1DA as distance above sea level:
| Metres | Feet | |
|---|---|---|
| Elevation | 70m | 230ft |
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.
| Ward | Castle |
|---|---|
| Constituency | Northampton South |
1, ST GILES SQUARE, NORTHAMPTON, NN1 1DA 2000 9 MAY £258,500 |
| Derngate Centre (Derngate) | Northampton | 117m |
| Post Office (St Giles Street) | Northampton | 122m |
| Derngate Centre (Derngate) | Northampton | 143m |
| Drapery | Northampton | 151m |
| Drapery | Northampton | 156m |
| Northampton Station | 0.8km |


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| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| St Giles Street | 19:15 | 12:30 | 81m |
| St Giles Street | 19:15 | 87m | |
| Drapery | 18:45 | 11:30 | 142m |
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 NN1 1DA:
| ITL 1 Code | Name |
|---|---|
| TLF | East Midlands (England) |
| ITL 2 Code | Name |
| TLF2 | Leicestershire, Rutland and Northamptonshire |
| ITL 3 Code | Name |
| TLF24 | West Northamptonshire |
| LAU 1 Code | Name |
| E07000154 | Northampton |
The below table lists the Census Output Area (OA), Lower Layer Super Output Area (LSOA), and Middle Layer Super Output Area (MSOA) for NN1 1DA:
| Code | Name | |
|---|---|---|
| OA | E00169272 | |
| LSOA | E01027223 | Northampton 025A |
| MSOA | E02005674 | Northampton 025 |
| NN1 1UB | Derngate | 75m |
| NN1 1DF | George Row | 96m |
| NN1 1JA | St Giles Street | 108m |
| NN1 2QL | Mercers Row | 109m |
| NN1 2DF | Market Square | 115m |
| NN1 1DJ | George Row | 130m |
| NN1 2AN | Abington Street | 130m |
| NN1 1EW | Guildhall Road | 132m |
| NN1 1NH | Bridge Street | 150m |
| NN1 2DL | Market Square | 163m |