{"url":"https://openpostcodes.uk/SL4","type":"district","district":"SL4","area":"SL","postcode_count":1373,"councils":["Windsor and Maidenhead","Bracknell Forest","Buckinghamshire","Runnymede","Slough"],"sectors":[{"sector":"SL4 1","url":"https://openpostcodes.uk/SL4%201","postcode_count":157,"admin_district":"Windsor and Maidenhead"},{"sector":"SL4 2","url":"https://openpostcodes.uk/SL4%202","postcode_count":216,"admin_district":"Windsor and Maidenhead"},{"sector":"SL4 3","url":"https://openpostcodes.uk/SL4%203","postcode_count":238,"admin_district":"Windsor and Maidenhead"},{"sector":"SL4 4","url":"https://openpostcodes.uk/SL4%204","postcode_count":294,"admin_district":"Windsor and Maidenhead"},{"sector":"SL4 5","url":"https://openpostcodes.uk/SL4%205","postcode_count":259,"admin_district":"Windsor and Maidenhead"},{"sector":"SL4 6","url":"https://openpostcodes.uk/SL4%206","postcode_count":177,"admin_district":"Windsor and Maidenhead"},{"sector":"SL4 9","url":"https://openpostcodes.uk/SL4%209","postcode_count":32,"admin_district":"Windsor and Maidenhead"}]}