N11 3BY maps, stats, and open data
N11 3BY lies on Hollyfield Avenue in London. N11 3BY is located in the Friern Barnet electoral ward, within the London borough of Barnet and the English Parliamentary constituency of Chipping Barnet. The Sub Integrated Care Board (ICB) Location is NHS North Central London ICB - 93C and the police force is Metropolitan Police. This postcode has been in use since January 1980.
N11 3BY maps
Source: OS VectorMap District (Ordnance Survey)
Licence: Open Government Licence (requires attribution)
N11 3BY geodata
| Easting | 527715 |
| Northing | 192009 |
| Latitude | 51.612436 |
| Longitude | -0.156874 |
Where is N11 3BY?
| Street | Hollyfield Avenue |
| Town/City | London |
| Country | England |
| Postcode District | N11 |
N11 3BY Elevation
Elevation or altitude of N11 3BY as distance above sea level:
| Metres | Feet | |
|---|---|---|
| Elevation | 60m | 197ft |
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 | Friern Barnet |
|---|---|
| Constituency | Chipping Barnet |
House Prices
Sales of detached houses in N11 3BY
2025 14 MAY £880,000 |
2007 7 MAR £355,000 |
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 N11 3BY
| Friern Barnet Road (Colney Hatch Lane) | Friern Barnet | 45m |
| Friern Barnet Town Hall (Friern Barnet Road) | Friern Barnet | 85m |
| Friern Barnet Road (Colney Hatch Lane) | Friern Barnet | 102m |
| Friern Barnet Town Hall | Friern Barnet | 103m |
| Hillside Avenue (Colney Hatch Lane) | Colney Hatch | 120m |
Nearest railway stations to N11 3BY
| New Southgate Station | 1km |
| Bowes Park Station | 2.6km |
| Oakleigh Park Station | 2.9km |
Broadband
Broadband access in N11 3BY (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 | 100.0% |
| Percentage of properties with Full Fibre Broadband | 100.0% |
Superfast Broadband is between 30Mbps and 300Mbps
Ultrafast Broadband is > 300Mbps
Broadband speed in N11 3BY (2019 data)
Download
| Median download speed | 50.0Mbps |
| Average download speed | 64.3Mbps |
| Maximum download speed | 350.00Mbps |
Upload
| Median upload speed | 10.0Mbps |
| Average upload speed | 11.2Mbps |
| Maximum upload speed | 20.00Mbps |
Broadband limitations in N11 3BY (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% |
N11 3BY gas and electricity consumption
Estimated total energy consumption in N11 3BY by fuel type, 2015.
Gas
| Consumption (kWh) | 703,760 |
|---|---|
| Meter count | 35 |
| Mean (kWh/meter) | 20,107 |
| Median (kWh/meter) | 18,156 |
Electricity
| Consumption (kWh) | 98,277 |
|---|---|
| Meter count | 28 |
| Mean (kWh/meter) | 3,510 |
| Median (kWh/meter) | 3,684 |
- Consumption: The estimated total energy consumption, in kWh, across all meters in N11 3BY, for 2015.
- Meter count: The total number of meters in N11 3BY.
- 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
39.8% of English postcodes are less deprived than N11 3BY:Food Standards Agency
Three nearest food hygiene ratings to N11 3BY (metres)
➜ Get more ratings from the Food Standards Agency
Nearest post box to N11 3BY
| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| 23 Queens Parade/Friern Barnet | 17:30 | 12:00 | 86m |
| Friern Barnet Post Office | 18:30 | 12:00 | 183m |
| Friern Barnet Road | 17:30 | 12:00 | 294m |
N11 3BY ITL and N11 3BY 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 N11 3BY:
| ITL 1 Code | Name |
|---|---|
| TLI | London |
| ITL 2 Code | Name |
| TLI7 | Outer London - West and North West |
| ITL 3 Code | Name |
| TLI71 | Barnet |
| LAU 1 Code | Name |
| E09000003 | Barnet |
N11 3BY 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 N11 3BY:
| Code | Name | |
|---|---|---|
| OA | E00000779 | |
| LSOA | E01000161 | Barnet 015D |
| MSOA | E02000038 | Barnet 015 |
Nearest postcodes to N11 3BY
| N11 3DB | Colney Hatch Lane | 39m |
| N11 3BX | St Johns Avenue | 83m |
| N11 3BH | Hillside Avenue | 87m |
| N11 3DA | Friern Barnet Road | 87m |
| N11 3BU | St Johns Villas | 114m |
| N12 0LX | Lyndhurst Avenue | 115m |
| N12 0ND | Woodhouse Road | 133m |
| N11 3DH | Colney Hatch Lane | 133m |
| N11 3DE | Hillside Avenue | 134m |
| N11 3DQ | Colney Hatch Lane | 139m |
- 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)
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