HDB blocks on Lorong 21 Geylang
- Blk 1, Lorong 21 Geylang. Postal Code, 388452
- Blk 11, Lorong 21 Geylang. Postal Code, 388457
- Blk 15, Lorong 21 Geylang. Postal Code, 388460
- Blk 17, Lorong 21 Geylang. Postal Code, 388461
- Blk 19, Lorong 21 Geylang. Postal Code, 388462
- Blk 39, Lorong 21 Geylang. Postal Code, 388463
- Blk 5, Lorong 21 Geylang. Postal Code, 388453
- Blk 50, Lorong 21 Geylang. Postal Code, 388465
- Blk 51, Lorong 21 Geylang. Postal Code, 388466
- Blk 7, Lorong 21 Geylang. Postal Code, 388455
Condo and other places on Lorong 21 Geylang
- Greatland Building, 48, Lorong 21 Geylang. Postal Code, 388464
- Lion City Leather Shoe Aljunied Al-Islamiah, 43, Lorong 21 Geylang. Postal Code, 388467