{"url":"https://openpostcodes.uk/WD4","type":"district","district":"WD4","area":"WD","postcode_count":372,"councils":["Dacorum","Three Rivers","Watford"],"sectors":[{"sector":"WD4 4","url":"https://openpostcodes.uk/WD4%204","postcode_count":11,"admin_district":"Watford"},{"sector":"WD4 8","url":"https://openpostcodes.uk/WD4%208","postcode_count":220,"admin_district":"Three Rivers"},{"sector":"WD4 9","url":"https://openpostcodes.uk/WD4%209","postcode_count":141,"admin_district":"Dacorum"}]}