{"quality":"Within the building of the matched address closest to the postcode mean","constituency2024":"Harpenden and Berkhamsted","district":"St Albans","ward":"Harpenden West","wardCode":"E05013955","lsoaName":"St Albans 003D","lsoa":"E01023702","lsoa21Name":"St Albans 003D","lsoa21":"E01023702","county":"Hertfordshire","region":"East of England","country":"England","nationalPark":"","altitude":126,"ruralUrban":"Urban city and town","ttwa":"Luton","postTown":"Harpenden","builtUpArea":"Harpenden","inUse":"Yes","what3Words":"fuzzy.paints.trace","imd":33246,"imdDecile":10,"averageIncome":72500,"predominantPropertyType":"Semi-detached","knownAddresses":["First Floor Flat, 54 Cowper Road, Harpenden","2 Cowper Road, Harpenden","4 Cowper Road, Harpenden","6 Cowper Road, Harpenden","8 Cowper Road, Harpenden","10 Cowper Road, Harpenden","12 Cowper Road, Harpenden","14 Cowper Road, Harpenden","16 Cowper Road, Harpenden","18 Cowper Road, Harpenden","20 Cowper Road, Harpenden","22 Cowper Road, 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