CM1 3NU maps, stats, and open data
CM1 3NU lies on Ongar Road in Writtle, Chelmsford. CM1 3NU is located in the Writtle electoral ward, within the local authority district of Chelmsford and the English Parliamentary constituency of Saffron Walden. The Sub Integrated Care Board (ICB) Location is NHS Mid and South Essex ICB - 06Q and the police force is Essex. This postcode has been in use since January 1980.
CM1 3NU maps
Source: OS VectorMap District (Ordnance Survey)
Licence: Open Government Licence (requires attribution)
CM1 3NU geodata
| Easting | 567406 |
| Northing | 206408 |
| Latitude | 51.731390 |
| Longitude | 0.422738 |
Where is CM1 3NU?
| Street | Ongar Road |
| Locality | Writtle |
| Town/City | Chelmsford |
| Country | England |
| Postcode District | CM1 |
CM1 3NU Elevation
Elevation or altitude of CM1 3NU as distance above sea level:
| Metres | Feet | |
|---|---|---|
| Elevation | 40m | 131ft |
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 | Writtle |
|---|---|
| Constituency | Saffron Walden |
House Prices
Sales of detached houses in CM1 3NU
2025 5 SEP £570,000 |
14, ONGAR ROAD, WRITTLE, CHELMSFORD, CM1 3NU 2022 4 APR £600,000 |
2022 16 MAR £740,000 |
2021 23 NOV £635,000 |
36, ONGAR ROAD, WRITTLE, CHELMSFORD, CM1 3NU 2021 5 MAR £460,000 |
2020 25 FEB £525,000 |
2017 27 NOV £495,000 |
2015 2 SEP £515,000 |
2013 9 DEC £260,000 |
2013 19 AUG £350,000 |
Licence: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
Transport
Nearest bus stops to CM1 3NU
| Prestons Garage (Ongar Road) | Writtle | 38m |
| Prestons Garage (Ongar Road) | Writtle | 164m |
| Purcell Cole (Ongar Road) | Writtle | 253m |
| Writtle Green (The Green) | Writtle | 322m |
| Purcell Cole (Ongar Road) | Writtle | 334m |
Nearest railway stations to CM1 3NU
| Chelmsford Station | 3.2km |
Broadband
Broadband access in CM1 3NU (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 | 40.0% |
| Percentage of properties with Full Fibre Broadband | 40.0% |
Superfast Broadband is between 30Mbps and 300Mbps
Ultrafast Broadband is > 300Mbps
Broadband speed in CM1 3NU (2019 data)
Download
| Median download speed | 19.6Mbps |
| Average download speed | 30.8Mbps |
| Maximum download speed | 80.00Mbps |
Upload
| Median upload speed | 1.2Mbps |
| Average upload speed | 5.8Mbps |
| Maximum upload speed | 20.00Mbps |
Broadband limitations in CM1 3NU (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% |
CM1 3NU gas and electricity consumption
Estimated total energy consumption in CM1 3NU by fuel type, 2015.
Gas
| Consumption (kWh) | 526,923 |
|---|---|
| Meter count | 25 |
| Mean (kWh/meter) | 21,077 |
| Median (kWh/meter) | 20,021 |
Electricity
| Consumption (kWh) | 103,898 |
|---|---|
| Meter count | 22 |
| Mean (kWh/meter) | 4,723 |
| Median (kWh/meter) | 3,911 |
- Consumption: The estimated total energy consumption, in kWh, across all meters in CM1 3NU, for 2015.
- Meter count: The total number of meters in CM1 3NU.
- Mean: The mean average consumption per meter, in kWh.
- Median: The median average consumption per meter, in kWh.
Source: Postcode level electricity estimates: 2015 (experimental)
Licence: Open Government Licence
Deprivation
4.7% of English postcodes are less deprived than CM1 3NU:Food Standards Agency
Three nearest food hygiene ratings to CM1 3NU (metres)
➜ Get more ratings from the Food Standards Agency
Nearest post box to CM1 3NU
| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Long Brandocks | 16:50 | 08:45 | 367m |
| Writtle P.o. | 17:30 | 12:00 | 435m |
| Lodge Road | 16:45 | 09:00 | 624m |
CM1 3NU ITL and CM1 3NU 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 CM1 3NU:
| ITL 1 Code | Name |
|---|---|
| TLH | East |
| ITL 2 Code | Name |
| TLH3 | Essex |
| ITL 3 Code | Name |
| TLH36 | Heart of Essex |
| LAU 1 Code | Name |
| E07000070 | Chelmsford |
CM1 3NU 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 CM1 3NU:
| Code | Name | |
|---|---|---|
| OA | E00109902 | |
| LSOA | E01021633 | Chelmsford 011C |
| MSOA | E02004495 | Chelmsford 011 |
Nearest postcodes to CM1 3NU
| CM1 3NA | Ongar Road | 66m |
| CM1 3EJ | Mayfield Road | 72m |
| CM1 3EL | Mayfield Road | 108m |
| CM1 3LG | Little Meadow | 123m |
| CM1 3LQ | Little Meadow | 161m |
| CM1 3EQ | Lordship Road | 215m |
| CM1 3DY | Chancery Place | 222m |
| CM1 3NB | Purcell Cole | 230m |
| CM1 3LW | Millfields | 242m |
| CM1 3DX | Green Close | 251m |
- Contains OS data © Crown copyright and database right (2026)
- Contains Royal Mail data © Royal Mail copyright and Database right (2026)
- Contains National Statistics data © Crown copyright and database right (2026)
- Data produced by Land Registry © Crown copyright (2026)
- Contains Environment Agency data licensed under the Open Government Licence v3.0
- Everything else © GetTheData Publishing Limited (2026)
GetTheData.com is owned and operated by GetTheData Publishing Limited.
Company Number: 11075184 · Registered in England and Wales.
Registered Office: 3rd Floor, 86-90 Paul Street, London, England, EC2A 4NE
By accessing our site you agree to us using cookies, and sharing information about your use of our site, in accordance with our privacy policy.