Harrow
30 postcode sectors mapped mainly to Harrow. Choose a district or browse the guides below. These are postcode sectors, not named neighbourhood boundaries.
Postcode districts
Area guides
30 sectors
- HA1 1Near Wealdstone
- HA1 2Near Wealdstone
- HA1 3Near Wealdstone
- HA1 4Near Wealdstone
- HA1 9Near Wealdstone
- HA2 0Near Rayners Lane
- HA2 2Near Wealdstone
- HA2 6Near Harrow Weald
- HA2 7Near Rayners Lane
- HA2 8Near Rayners Lane
- HA2 9Near Rayners Lane
- HA3 3Near Wealdstone
- HA3 5Near Wealdstone
- HA3 6Near Harrow Weald
- HA3 7Near Wealdstone
- HA3 8Near Wealdstone
- HA3 9Near London Borough of Harrow
- HA5 1Near Pinner
- HA5 3Near Pinner
- HA5 4Near Hatch End
- HA5 5Near Pinner
- HA5 9Near Pinner
- HA7 1Near London Borough of Harrow
- HA7 2Near Belmont
- HA7 3Near Stanmore
- HA7 4Near Stanmore
- HA7 9Near London Borough of Harrow
- HA8 5Near London Borough of Harrow
- HA8 6Near London Borough of Harrow
- HA8 7Near London Borough of Harrow
Authority grouping uses mapped sector boundaries from the Office for National Statistics, December 2025. It measures boundary area, not the number of addresses or residents. Guide names describe a place near the approximate sector centre.