This is a list of the Unique Property Reference Numbers (UPRNs) in the S21 4AY area. These are the unique identifiers for every addressable location in the postcode. Unfortunately the actual addresses are not freely available. There are 51 UPRNs in the S21 4AY postcode.
| UPRN | Address | Road | Latitude | Longitude |
|---|---|---|---|---|
| 10034035054 | Get address | Castle Hill | 53.311222 | -1.356106 |
| 10034490647 | Get address | Ida's Road | 53.311351 | -1.360156 |
| 10034491059 | Get address | Castle View | 53.310736 | -1.35946 |
| 10034491398 | Get address | Camms Close | 53.311853 | -1.358182 |
| 10091721629 | Get address | Castle Hill | 53.3114 | -1.355773 |
| 100030216071 | Get address | Castle Hill | 53.311534 | -1.357272 |
| 100030216073 | Get address | Castle Hill | 53.311498 | -1.357347 |
| 100030216075 | Get address | Castle Hill | 53.311178 | -1.358012 |
| 100030216077 | Get address | Castle Hill | 53.311133 | -1.358088 |
| 100030216079 | Get address | Castle Hill | 53.311071 | -1.358164 |
| 100030216081 | Get address | Castle Hill | 53.311044 | -1.35824 |
| 100030216083 | Get address | Castle Hill | 53.310982 | -1.358391 |
| 100030216085 | Get address | Castle Hill | 53.310974 | -1.358481 |
| 100030216086 | Get address | Castle Hill | 53.310965 | -1.358481 |
| 100030216088 | Get address | Castle Hill | 53.310938 | -1.358586 |
| 100030216090 | Get address | Castle Hill | 53.310921 | -1.358677 |
| 100030216092 | Get address | Castle Hill | 53.310904 | -1.358842 |
| 100030216094 | Get address | Castle Hill | 53.310895 | -1.358947 |
| 100030216096 | Get address | Castle Hill | 53.310896 | -1.359052 |
| 100030216098 | Get address | Castle Hill | 53.310896 | -1.359157 |
| 100030216100 | Get address | Castle Hill | 53.310906 | -1.359307 |
| 100030216102 | Get address | Castle Hill | 53.310907 | -1.359412 |
| 100030216104 | Get address | Castle Hill | 53.310962 | -1.359592 |
| 100030216106 | Get address | Castle Hill | 53.311007 | -1.359666 |
| 100030216108 | Get address | Castle Hill | 53.311088 | -1.35974 |
| 100030216110 | Get address | Castle Hill | 53.311143 | -1.359784 |
| 100030216112 | Get address | Castle Hill | 53.311224 | -1.359828 |
| 100030216114 | Get address | Castle Hill | 53.311287 | -1.359857 |
| 100030216116 | Get address | Castle Hill | 53.31144 | -1.35993 |
| 100030216118 | Get address | Castle Hill | 53.311494 | -1.359959 |
| 100030216120 | Get address | Castle Hill | 53.311584 | -1.359987 |
| 100030216122 | Get address | Castle Hill | 53.311638 | -1.360002 |
| 100030216124 | Get address | Castle Hill | 53.311746 | -1.359955 |
| 100030216126 | Get address | Castle Hill | 53.31179 | -1.359864 |
| 100030216128 | Get address | Castle Hill | 53.311798 | -1.359684 |
| 100030216130 | Get address | Castle Hill | 53.311789 | -1.359594 |
| 100030216132 | Get address | Castle Hill | 53.311957 | -1.359051 |
| 100030216134 | Get address | Castle Hill | 53.311983 | -1.358961 |
| 100030216136 | Get address | Castle Hill | 53.312009 | -1.35881 |
| 100030216138 | Get address | Castle Hill | 53.312027 | -1.35872 |
| 100030216140 | Get address | Castle Hill | 53.311972 | -1.358541 |
| 100030216142 | Get address | Castle Hill | 53.311918 | -1.358482 |
| 100030216144 | Get address | Castle Hill | 53.311755 | -1.358379 |
| 100030216146 | Get address | Castle Hill | 53.311701 | -1.358335 |
| 100030216148 | Get address | Castle Hill | 53.31162 | -1.358246 |
| 100030216150 | Get address | Castle Hill | 53.311565 | -1.358187 |
| 100030216152 | Get address | Castle Hill | 53.311484 | -1.358113 |
| 100030216154 | Get address | Castle Hill | 53.31143 | -1.358069 |
| 100030216156 | Get address | Castle Hill | 53.311331 | -1.35801 |
| 100030216158 | Get address | Castle Hill | 53.311277 | -1.357966 |
| 100032178003 | Get address | Castle Hill | 53.31153 | -1.356566 |