All postcodes in M21 3
| Postcode | Place | Type |
|---|---|---|
| M21 3BF | Manchester | large user |
| M21 3BJ | Manchester | large user |
| M21 3BL | Manchester | large user |
| M21 3BQ | Manchester | large user |
| M21 3BT | Manchester | large user |
| M21 3BU | Manchester | large user |
| M21 3BZ | Manchester | large user |
| M21 3DE | Manchester | large user |
| M21 3DG | Manchester | large user |
| M21 3DS | Manchester | large user |
| M21 3DT | Manchester | large user |
| M21 3EH | Manchester | large user |
| M21 3EY | Manchester | large user |
| M21 3FB | Manchester | large user |
| M21 3FF | Manchester | large user |
Places in sector M21 3
- Manchester 15