| Postcode | CO12 3QN | 
|---|---|
| Post Town | Harwich | 
| Nearest station | Dovercourt (1 km) | 
| Bus stops | Brooklyn Road (NE) DaRT Dovercourt () Minesweepers Memorial (NE) Minesweepers Memorial (SW) Cliff Road (SW) Mayflower School (E) | 
| Roads in this postcode | |
| Number of UPRNs | 32 View | 
| Known addresses | 5 Portland Avenue, Harwich 7 Portland Avenue, Harwich 9 Portland Avenue, Harwich 10 Portland Avenue, Harwich 11 Portland Avenue, Harwich 12 Portland Avenue, Harwich 13 Portland Avenue, Harwich 14 Portland Avenue, Harwich 15 Portland Avenue, Harwich 16 Portland Avenue, Harwich 17 Portland Avenue, Harwich 18 Portland Avenue, Harwich 19 Portland Avenue, Harwich 20 Portland Avenue, Harwich 21 Portland Avenue, Harwich 22 Portland Avenue, Harwich 23 Portland Avenue, Harwich 24 Portland Avenue, Harwich 27 Portland Avenue, Harwich 28 Portland Avenue, Harwich 29 Portland Avenue, Harwich 30 Portland Avenue, Harwich 31 Portland Avenue, Harwich 33 Portland Avenue, Harwich 35 Portland Avenue, Harwich 39 Portland Avenue, Harwich | 
| Main property type | Terraced | 
| Businesses | 
| Latitude | 51.934647 | |
|---|---|---|
| Longitude | 1.276529 | |
| Easting | 625337 | |
| Northing | 231310 | |
| Grid reference | TM253313 | |
| UTM reference | 31U 381514 5755172 | |
| what3words | cargo.deals.adjuster | |
| FixPhrase | crisping makeover situated unseen | |
| Plus code | 9F33W7MG+VJ | |
| Altitude | 11 metres (36 feet) | |
| Sunrise (today) | 6:48 | |
| Sunset (today) | 16:30 | |
| Distance away | ||
| Distance to sea | 0.3 KMs (0.2 miles) | 
| Parish | Harwich | E04004099 | 
|---|---|---|
| Ward | Dovercourt Bay | E05011940 | 
| Local Authority District | Tendring | E07000076 | 
| County Electoral Division | Harwich | E58000438 | 
| Local Authority | Essex | E10000012 | 
| County | Essex | E10000012 | 
| Constituency (2024) | Harwich and North Essex | E14001273 | 
| MP | Sir Bernard Jenkin | Conservative | 
| Police force | Essex | |
| Water company | Affinity Water | |
| Sewage company | Anglian Water | |
| NUTS/ITL 3 | Essex Haven Gateway | |
| NUTS/ITL 2 | Essex | |
| 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 | 
| Population (2011) | 54 | |
|---|---|---|
| Households (2011) | 27 | |
| 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) | Harwich | E63011115 | 
| Census output area (2021) | E00111759 | |
| Census output area (2011) | 8D3 | |
| Lower layer super output area (2021) | Tendring 001C | E01021999 | 
| Lower layer super output area (2011) | Tendring 001C | E01021999 | 
| Middle layer super output area (2021) | Harwich Town & Dovercourt | E02004573 | 
| Middle layer super output area (2011) | Harwich Town & Dovercourt | E02004573 | 
| Travel to work area | Clacton | E30000192 | 
| Average property price in Colchester | £310,274 | 
|---|---|
| Annual change | 0.3% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 22 Portland Avenue, Harwich | Semi-detached (freehold) | Nov 2024 | £162,000 | 
| Semi-detached (freehold) | Mar 2002 | £73,000 | |
| 31 Portland Avenue, Harwich | Terraced (freehold) | Jul 2024 | £165,000 | 
| 27 Portland Avenue, Harwich | Terraced (freehold) | Jun 2024 | £212,500 | 
| Terraced (freehold) | Jan 2019 | £180,000 | |
| Terraced (freehold) | Jul 2014 | £95,000 | |
| Terraced (freehold) | Sep 2010 | £88,775 | |
| 29 Portland Avenue, Harwich | Detached (freehold) | Dec 2023 | £120,000 | 
| Detached (freehold) | Jan 2004 | £105,000 | |
| Terraced (freehold) | Jul 2001 | £40,000 | |
| 16 Portland Avenue, Harwich | Semi-detached (freehold) | Apr 2022 | £251,000 | 
| Semi-detached (freehold) | Mar 2016 | £120,000 | |
| 18 Portland Avenue, Harwich | Semi-detached (freehold) | Nov 2021 | £235,000 | 
| Semi-detached (freehold) | Sep 2016 | £140,000 | |
| Semi-detached (freehold) | Oct 2003 | £116,000 | |
| 23 Portland Avenue, Harwich | Terraced (freehold) | May 2021 | £157,000 | 
| Terraced (freehold) | Feb 2007 | £135,000 | |
| 7 Portland Avenue, Harwich | Terraced (freehold) | Aug 2019 | £130,000 | 
| Terraced (freehold) | Aug 2009 | £88,000 | |
| Terraced (freehold) | Jul 2002 | £65,995 | |
| Terraced (freehold) | Jul 2000 | £45,500 | |
| 13 Portland Avenue, Harwich | Terraced (freehold) | Apr 2017 | £110,000 | 
| Terraced (freehold) | Sep 2010 | £128,995 | |
| Terraced (freehold) | Dec 2002 | £78,500 | |
| Terraced (freehold) | Jul 2001 | £58,995 | |
| Terraced (freehold) | Jul 1999 | £40,000 | |
| 24 Portland Avenue, Harwich | Semi-detached (freehold) | Mar 2016 | £135,500 | 
| Semi-detached (freehold) | Dec 2013 | £116,000 |