{"url":"https://openpostcodes.uk/SG3","type":"district","district":"SG3","area":"SG","postcode_count":206,"councils":["North Hertfordshire","Welwyn Hatfield","East Hertfordshire"],"sectors":[{"sector":"SG3 6","url":"https://openpostcodes.uk/SG3%206","postcode_count":206,"admin_district":"North Hertfordshire"}]}