{"url":"https://openpostcodes.uk/AL4","type":"district","district":"AL4","area":"AL","postcode_count":786,"councils":["St Albans","North Hertfordshire","Welwyn Hatfield","Hertsmere"],"sectors":[{"sector":"AL4 0","url":"https://openpostcodes.uk/AL4%200","postcode_count":290,"admin_district":"St Albans"},{"sector":"AL4 8","url":"https://openpostcodes.uk/AL4%208","postcode_count":209,"admin_district":"St Albans"},{"sector":"AL4 9","url":"https://openpostcodes.uk/AL4%209","postcode_count":287,"admin_district":"St Albans"}]}