Postcode,In Use?,Latitude,Longitude,Easting,Northing,Grid Ref,Introduced,Terminated,Altitude,Population,Households,Nearest Station,Distance To Station (KM),Built Up Area,Water Company,Sewage Company,District,Ward,County Electoral Division SG2 7ND,Yes,51.917305,-0.132565,528532,225956,TL285259,4/1/1987 12:00:00 AM,,87,19,15,Stevenage,5.4,Walkern,Affinity Water,Thames Water,East Hertfordshire,"Aston, Datchworth & Walkern",Hertford Rural SG2 7NG,Yes,51.917771,-0.131920,528575,226009,TL285260,1/1/1980 12:00:00 AM,,87,33,13,Stevenage,5.5,Walkern,Affinity Water,Thames Water,East Hertfordshire,"Aston, Datchworth & Walkern",Hertford Rural SG2 7NJ,Yes,51.918406,-0.130004,528705,226083,TL287260,1/1/1980 12:00:00 AM,,89,168,74,Stevenage,5.6,Walkern,Affinity Water,Thames Water,East Hertfordshire,"Aston, Datchworth & Walkern",Hertford Rural