| Postcode | PO18 0NF | 
|---|---|
| Post Town | Chichester | 
| Nearest station | Barnham (6 km) | 
| Bus stops | No nearby bus stops | 
| Roads in this postcode | |
| Number of UPRNs | 42 View | 
| Known addresses | Beech Tree House, Halnaker Keepers Cottage, Halnaker Mossat House, Halnaker Stanefield, Halnaker The Folly, Halnaker The Lodge, Halnaker Warehead Cottage, Halnaker Wayside Cottage, Halnaker 50 Stane Street, Halnaker 52 Halnaker 53 Halnaker 55 Halnaker | 
| Main property type | Detached | 
| Businesses | 
| Latitude | 50.869687 | |
|---|---|---|
| Longitude | -0.702399 | |
| Easting | 491404 | |
| Northing | 108600 | |
| Grid reference | SU914086 | |
| UTM reference | 30U 661664 5637848 | |
| what3words | alarmed.scribble.cobbled | |
| FixPhrase | crib magazine starting upheaval | |
| Plus code | 9C2XV79X+V2 | |
| Altitude | 47 metres (155 feet) | |
| Sunrise (today) | 6:54 | |
| Sunset (today) | 16:41 | |
| Distance away | ||
| Distance to sea | 8.8 KMs (5.5 miles) | 
| Parish | Boxgrove | E04009886 | 
|---|---|---|
| Ward | Goodwood | E05011674 | 
| Local Authority District | Chichester | E07000225 | 
| County Electoral Division | Chichester North | E58001614 | 
| Local Authority | West Sussex | E10000032 | 
| County | West Sussex | E10000032 | 
| Constituency (2024) | Arundel and South Downs | E14001067 | 
| MP | Andrew Griffith | Conservative | 
| Police force | Sussex | |
| Water company | Portsmouth Water | |
| Sewage company | Southern Water | |
| NUTS/ITL 3 | West Sussex (South West) | |
| NUTS/ITL 2 | Surrey, East and West Sussex | |
| 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) | 54 | |
|---|---|---|
| Households (2011) | 22 | |
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Smaller rural: Nearer to a major town or city | |
| Rural/urban (2011) | Rural hamlet and isolated dwellings | |
| Census output area (2021) | E00160519 | |
| Census output area (2011) | 1A3 | |
| Lower layer super output area (2021) | Chichester 006A | E01031477 | 
| Lower layer super output area (2011) | Chichester 006A | E01031477 | 
| Middle layer super output area (2021) | Dean, Lavant & Summersdale | E02006566 | 
| Middle layer super output area (2011) | Dean, Lavant & Summersdale | E02006566 | 
| Travel to work area | Chichester and Bognor Regis | E30000191 | 
| Average property price in Portsmouth | £299,930 | 
|---|---|
| Annual change | 0.3% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| Keepers Cottage, Halnaker | Other (freehold) | Feb 2023 | £1,320,000 | 
| Detached (freehold) | Dec 1995 | £360,000 | |
| Stanefield, Halnaker | Other (freehold) | Oct 2022 | £955,000 | 
| 55 Halnaker | Semi-detached (freehold) | Oct 2022 | £732,000 | 
| Semi-detached (freehold) | Aug 2019 | £518,000 | |
| Semi-detached (freehold) | Jun 2015 | £380,000 | |
| Semi-detached (freehold) | Dec 1998 | £155,000 | |
| The Folly, Halnaker | Detached (freehold) | Feb 2020 | £1,800,000 | 
| Detached (freehold) | Oct 2012 | £1,380,000 | |
| Detached (freehold) | Apr 1996 | £375,000 | |
| Mossat House, Halnaker | Detached (freehold) | Oct 2019 | £1,075,000 | 
| Detached (freehold) | Apr 2007 | £790,000 | |
| Detached (freehold) | Nov 2005 | £680,000 | |
| Detached (freehold) | Aug 1997 | £240,000 | |
| Warehead Cottage, Halnaker | Detached (freehold) | Jul 2017 | £625,000 | 
| 52 Halnaker | Semi-detached (freehold) | May 2014 | £330,000 | 
| Semi-detached (freehold) | Feb 1995 | £123,000 | |
| The Lodge, Halnaker | Detached (freehold) | Jul 2012 | £635,000 | 
| Detached (freehold) | Sep 2006 | £630,000 | |
| Detached (freehold) | Aug 2000 | £320,000 | |
| 50 Stane Street, Halnaker | Semi-detached (freehold) | May 2005 | £525,000 | 
| Wayside Cottage, Halnaker | New build detached (freehold) | Dec 2002 | £300,000 |