| Postcode | NN1 3LY | 
|---|---|
| Post Town | Northampton | 
| Nearest station | Northampton (1 km) | 
| Bus stops | Abington Square (SE) Abington Square (NE) Abington Square (SW) Post Office (SW) General Hospital (E) Derngate Centre (SE) | 
| Known addresses | Frances House, 21 Lower Mounts, Northampton | 
| Main property type | Other | 
| Businesses | 
                        No businesses found
                     | 
| Latitude | 52.24 | |
|---|---|---|
| Longitude | -0.890717 | |
| Easting | 475843 | |
| Northing | 260781 | |
| Grid reference | SP758607 | |
| UTM reference | 30U 644019 5789828 | |
| what3words | master.impose.always | |
| FixPhrase | crispy machinist slacked tavern | |
| Plus code | 9C4X64R5+2P | |
| Altitude | 93 metres (304 feet) | |
| Sunrise (today) | 6:58 | |
| Sunset (today) | 16:38 | |
| Distance away | ||
| Distance to sea | 96.8 KMs (60.1 miles) | 
| Parish | Northampton | E04013033 | 
|---|---|---|
| Ward | Castle | E05015983 | 
| Unitary Authority | West Northamptonshire | E06000062 | 
| County | Northamptonshire | E10000021 | 
| Constituency (2024) | Northampton North | E14001406 | 
| MP | Lucy Rigby | Labour | 
| Police force | Northamptonshire | |
| Water company | Anglian Water | |
| NUTS/ITL 3 | West Northamptonshire | |
| NUTS/ITL 2 | Leicestershire, Rutland and Northamptonshire | |
| NUTS/ITL 1 | East Midlands | |
| Country | England | E92000001 | 
| Date introduced | August 1992 | 
|---|---|
| Date usage ended | February 2014 | 
| Last updated | September 2025 | 
| User type | Large (addresses receive more than 25 items of mail per day) | 
| Quality | Within the building of the matched address closest to the postcode mean | 
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
|---|---|---|
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Urban: Nearer to a major town or city | |
| Rural/urban (2011) | Urban city and town | |
| Built up area (2024) | Northampton | E63010463 | 
| Census output area (2021) | E00169271 | |
| Census output area (2011) | 2A3 | |
| Lower layer super output area (2021) | West Northamptonshire 034D | E01035417 | 
| Lower layer super output area (2011) | Northampton 025A | E01027223 | 
| Middle layer super output area (2021) | Cliftonville & Rushmere | E02005674 | 
| Middle layer super output area (2011) | Cliftonville & Rushmere | E02005674 | 
| Travel to work area | Northampton | E30000247 | 
| Average property price in Northampton | £276,963 | 
|---|---|
| Annual change | 0.3% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| Frances House, 21 Lower Mounts, Northampton | Other (freehold) | Jan 2019 | £3,630,000 | 
| Other (freehold) | Jan 2016 | £2,300,000 |