| Postcode | MK3 5EH | 
|---|---|
| Post Town | Milton Keynes | 
| Nearest station | Bletchley (2 km) | 
| Bus stops | St. John's Road (SW) Bletchley Road (NE) Knaresborough Court (N) Bletchley Road (SW) Knaresborough Court (SW) St Andrew Baptist Church (W) | 
| Roads in this postcode | |
| Number of UPRNs | 14 View | 
| Known addresses | 5 St Catherines Avenue, Bletchley 9 St Catherines Avenue, Bletchley 11 St Catherines Avenue, Bletchley 15 St Catherines Avenue, Bletchley 21 St Catherines Avenue, Bletchley 23 St Catherines Avenue, Bletchley 25 St Catherines Avenue, Bletchley | 
| Main property type | Semi-detached | 
| Businesses | 
| Latitude | 51.987334 | |
|---|---|---|
| Longitude | -0.764558 | |
| Easting | 484935 | |
| Northing | 232818 | |
| Grid reference | SP849328 | |
| UTM reference | 30U 653498 5761989 | |
| what3words | phones.bend.think | |
| FixPhrase | crisping magazine subheader ultimatum | |
| Plus code | 9C3XX6PP+W5 | |
| Altitude | 101 metres (332 feet) | |
| Sunrise (today) | 6:57 | |
| Sunset (today) | 16:38 | |
| Distance away | ||
| Distance to sea | 99.5 KMs (61.8 miles) | 
| Parish | West Bletchley | E04012194 | 
|---|---|---|
| Ward | Bletchley Park | E05009407 | 
| Unitary Authority | Milton Keynes | E06000042 | 
| County | Buckinghamshire | E10000002 | 
| Constituency (2024) | Buckingham and Bletchley | E14001141 | 
| MP | Callum Anderson | Labour | 
| Police force | Thames Valley | |
| Water company | Anglian Water | |
| NUTS/ITL 3 | Milton Keynes | |
| NUTS/ITL 2 | Berkshire, Buckinghamshire and Oxfordshire | |
| NUTS/ITL 1 | South East | |
| Country | England | E92000001 | 
| Date introduced | January 1980 | 
|---|---|
| Last updated | September 2025 | 
| User type | Small (addresses receive less than 25 items of mail per day) | 
| Quality | Within the building of the matched address closest to the postcode mean | 
| Population (2011) | 35 | |
|---|---|---|
| Households (2011) | 13 | |
| 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) | Bletchley | E63011059 | 
| Census output area (2021) | E00084351 | |
| Census output area (2011) | 8D2 | |
| Lower layer super output area (2021) | Milton Keynes 031C | E01016715 | 
| Lower layer super output area (2011) | Milton Keynes 031C | E01016715 | 
| Middle layer super output area (2021) | Bletchley West | E02003489 | 
| Middle layer super output area (2011) | Bletchley West | E02003489 | 
| Travel to work area | Milton Keynes | E30000243 | 
| Average property price in Milton Keynes | £348,307 | 
|---|---|
| Annual change | 0.8% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 11 St Catherines Avenue, Bletchley | Terraced (freehold) | Sep 2024 | £350,000 | 
| Terraced (freehold) | Apr 2006 | £176,000 | |
| Terraced (freehold) | Dec 1995 | £48,000 | |
| 15 St Catherines Avenue, Bletchley | Terraced (freehold) | Oct 2023 | £365,000 | 
| Terraced (freehold) | Jan 2004 | £136,000 | |
| Terraced (freehold) | Apr 2003 | £87,500 | |
| 25 St Catherines Avenue, Bletchley | Semi-detached (freehold) | Sep 2023 | £270,000 | 
| 23 St Catherines Avenue, Bletchley | Semi-detached (freehold) | Aug 2018 | £310,000 | 
| Semi-detached (freehold) | Aug 2017 | £296,000 | |
| Semi-detached (freehold) | Nov 2013 | £173,000 | |
| 5 St Catherines Avenue, Bletchley | Semi-detached (freehold) | Sep 2015 | £192,500 | 
| Semi-detached (freehold) | Jul 2013 | £155,000 | |
| 9 St Catherines Avenue, Bletchley | Terraced (freehold) | Jun 2015 | £210,000 | 
| 21 St Catherines Avenue, Bletchley | Semi-detached (freehold) | Aug 2010 | £175,000 | 
| Semi-detached (freehold) | Dec 2007 | £184,500 | |
| Semi-detached (freehold) | Nov 2004 | £139,950 | |
| Semi-detached (freehold) | Apr 2004 | £100,000 |