| Postcode | IP18 6JS | 
|---|---|
| Post Town | Southwold | 
| Nearest station | Brampton (Suffolk) (12 km) | 
| Bus stops | 
                       Red Lion (N) 
Market Place (NW) 
Gardner Road (SE) 
Gardner Road (NW) 
Kings Head (NW) 
North Green (S) 
                     | 
                  
| Roads in this postcode | |
| Number of UPRNs | 4 View | 
| Known addresses | 
                       Lantern Cottage, 4 Trinity Close, Southwold 
                            Sun Cottage, 1 Trinity Close, Southwold 
                            2 Trinity Close, Southwold 
                            3 Trinity Close, Southwold 
                       | 
                  
| Main property type | Semi-detached | 
| Businesses | 
| Latitude | 52.326102 | |
|---|---|---|
| Longitude | 1.680702 | |
| Easting | 650903 | |
| Northing | 276158 | |
| Grid reference | TM509761 | |
| UTM reference | 31U 410091 5798128 | |
| what3words | laces.noises.arose | |
| FixPhrase | criteria malformed shove these | |
| Plus code | 9F438MGJ+C7 | |
| Altitude | 12 metres (40 feet) | |
| Sunrise (today) | 6:55 | |
| Sunset (today) | 16:20 | |
| Distance away | ||
| Distance to sea | 0.2 KMs (0.1 miles) | 
| Parish | Southwold | E04009529 | 
|---|---|---|
| Ward | Southwold | E05012758 | 
| Local Authority District | East Suffolk | E07000244 | 
| County Electoral Division | Kessingland and Southwold | E58001428 | 
| Local Authority | Suffolk | E10000029 | 
| County | Suffolk | E10000029 | 
| Constituency (2024) | Suffolk Coastal | E14001530 | 
| MP | Jenny Riddell-Carpenter | Labour | 
| Police force | Suffolk | |
| Water company | Essex & Suffolk Water | |
| NUTS/ITL 3 | East Suffolk | |
| NUTS/ITL 2 | Suffolk | |
| NUTS/ITL 1 | East of England | |
| 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 | 
| Index of Multiple Deprivation (2019) | 
                     Most deprivedLeast deprived 
                   | 
                |
|---|---|---|
| Average household income (2020) | 
                       Lowest (£22,200)
                        Highest (£108,100)
                       
                     | 
                  |
| Rural/urban (2021) | Larger rural Further from a major town or city | |
| Rural/urban (2011) | Rural town and fringe | |
| Built up area (2024) | Southwold | E63010169 | 
| Census output area (2021) | E00154464 | |
| Census output area (2011) | 1B2 | |
| Lower layer super output area (2021) | East Suffolk 014C | E01035154 | 
| Lower layer super output area (2011) | Waveney 014A | E01030282 | 
| Middle layer super output area (2021) | Southwold, Reydon & Wrentham | E02006315 | 
| Middle layer super output area (2011) | Southwold, Reydon & Wrentham | E02006315 | 
| Travel to work area | Lowestoft | E30000235 | 
| Average property price in Ipswich | £294,439 | 
|---|---|
| Annual change | -0.5% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| Lantern Cottage, 4 Trinity Close, Southwold | Semi-detached (freehold) | Jul 2025 | £535,000 | 
| Semi-detached (freehold) | Nov 2020 | £555,000 | |
| Semi-detached (freehold) | Jul 2006 | £310,000 | |
| Semi-detached (freehold) | Apr 2003 | £280,000 | |
| 3 Trinity Close, Southwold | Semi-detached (freehold) | Jul 2024 | £632,000 | 
| Semi-detached (freehold) | Jul 2013 | £443,500 | |
| Semi-detached (freehold) | Nov 2005 | £265,000 | |
| 2 Trinity Close, Southwold | Semi-detached (freehold) | Jun 2019 | £545,000 | 
| Sun Cottage, 1 Trinity Close, Southwold | Semi-detached (freehold) | Apr 2002 | £190,000 |