SW4 is the Postal Code for the Clapham area of London. While it includes most of Clapham, it excludes the area known as Clapham Junction, which is in SW11. There’s some dispute as to whether Clapham junction really is in Clapham anyway. SW4 is in the South West London postcode area.
Local areas within or partially within the SW4 postcode include:
- Clapham North
- Clapham Commom
- Clapham South
- Streatham Hill