Districts in the SW area
| District | Main place | Local authority | Sectors | Postcodes |
|---|---|---|---|---|
| SW1A | City of Westminster | Westminster | 3 | 145 |
| SW1E | City of Westminster | Westminster | 2 | 87 |
| SW1H | City of Westminster | Westminster | 2 | 91 |
| SW1P | City of Westminster | Westminster | 5 | 752 |
| SW1V | City of Westminster | Westminster | 4 | 572 |
| SW1W | City of Westminster | Westminster | 3 | 343 |
| SW1X | City of Westminster | Westminster | 4 | 402 |
| SW1Y | City of Westminster | Westminster | 3 | 183 |
| SW2 | London | Lambeth | 6 | 1,034 |
| SW3 | Chelsea | Kensington and Chelsea | 7 | 868 |
| SW4 | London | Lambeth | 6 | 932 |
| SW5 | Kensington | Kensington and Chelsea | 3 | 306 |
| SW6 | Fulham | Hammersmith and Fulham | 8 | 1,506 |
| SW7 | Kensington | Kensington and Chelsea | 6 | 639 |
| SW8 | London | Lambeth | 6 | 858 |
| SW9 | London | Lambeth | 6 | 969 |
| SW10 | Chelsea | Kensington and Chelsea | 3 | 468 |
| SW11 | London | Wandsworth | 9 | 1,527 |
| SW12 | London | Wandsworth | 4 | 594 |
| SW13 | Barnes | Richmond upon Thames | 4 | 373 |
| SW14 | London | Richmond upon Thames | 3 | 366 |
| SW15 | Putney | Wandsworth | 7 | 1,225 |
| SW16 | Streatham | Lambeth | 7 | 1,353 |
| SW17 | London | Wandsworth | 6 | 1,001 |
| SW18 | London | Wandsworth | 6 | 1,242 |
| SW19 | Wimbledon | Merton | 9 | 1,659 |
| SW20 | London | Merton | 4 | 570 |
| SW95 | London | Wandsworth | 1 | 44 |