SW1A 1 is a postcode sector in Westminster, UK. Below is a complete list of SW1A 1 Postcodes (Active). SW1A 1 postcode sector comprises of 67 active postcodes. SW1A 1 sector has a population of 225, and it has 103 properties in the region.
| Population | 225 |
| Addresses / Property Count | 103 |
| Active Postcodes | 67 |
| Nearby Postcode Districts | 28 |
| Nearby Postcode Sectors | 2 |
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| Postcode | Latitude | Longitude | Households | Population | Easting | Northing |
|---|---|---|---|---|---|---|
| SW1A 1NS | 51.50568000 | -0.13955300 | 4 | 11 | 529218 | 180168 |
| SW1A 1NX | 51.50572700 | -0.14014600 | N/A | N/A | 529177 | 180172 |
| SW1A 1NY | 51.50553800 | -0.13968900 | N/A | N/A | 529209 | 180152 |
| SW1A 1PH | 51.50565100 | -0.13889100 | 14 | 27 | 529264 | 180166 |
| SW1A 1PJ | 51.50566500 | -0.13917900 | N/A | N/A | 529244 | 180167 |
| SW1A 1PL | 51.50499600 | -0.13842800 | 8 | 11 | 529298 | 180094 |
| SW1A 1RA | 51.50720200 | -0.14087400 | 1 | 1 | 529122 | 180335 |
| SW1A 1RB | 51.50716600 | -0.14142300 | N/A | N/A | 529084 | 180330 |
| SW1A 1RD | 51.50654400 | -0.14016600 | 3 | 6 | 529173 | 180263 |
| SW1A 1RE | 51.50711800 | -0.14063300 | 3 | 5 | 529139 | 180326 |
| SW1A 1RG | 51.50652000 | -0.14091700 | N/A | N/A | 529121 | 180259 |
| SW1A 1RJ | 51.50652000 | -0.14091700 | 2 | 2 | 529121 | 180259 |
| SW1A 1RL | 51.50652000 | -0.14091700 | 2 | 3 | 529121 | 180259 |
| SW1A 1RN | 51.50669800 | -0.14135600 | 1 | 2 | 529090 | 180278 |
| SW1A 1RP | 51.50700600 | -0.14029500 | N/A | N/A | 529163 | 180314 |
| SW1A 1YT | 51.48108700 | -0.13394700 | N/A | N/A | 529677 | 177443 |
| SW1A 1ZA | 51.48108700 | -0.13394700 | N/A | N/A | 529677 | 177443 |