CM21 is a postcode district in East Hertfordshire, UK. Below is a complete list of CM21 Postcodes (Active). CM21 postcode district comprises of 315 active postcodes and 3 postcode sectors. CM21 district has a population of 10865, and it has 4686 properties in the region.
| Population | 10865 |
| Addresses / Property Count | 4686 |
| Active Postcodes | 315 |
| Nearby Postcode Districts | 27 |
| Active Postcode Sectors | 3 |
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| Postcode | Latitude | Longitude | Households | Population | Easting | Northing |
|---|---|---|---|---|---|---|
| CM21 0ED | 51.81439100 | 0.14616600 | 21 | 45 | 548037 | 215040 |
| CM21 0EE | 51.81336100 | 0.14494200 | 21 | 56 | 547956 | 214923 |
| CM21 0EF | 51.81332600 | 0.14443200 | 21 | 56 | 547921 | 214918 |
| CM21 0EG | 51.81133600 | 0.14306100 | 10 | 18 | 547833 | 214694 |
| CM21 0EH | 51.81207400 | 0.14306700 | 22 | 48 | 547831 | 214776 |
| CM21 0EJ | 51.81073100 | 0.14370000 | 9 | 21 | 547879 | 214628 |
| CM21 0EL | 51.81085900 | 0.14260300 | 14 | 37 | 547803 | 214640 |
| CM21 0EN | 51.81649300 | 0.13979200 | N/A | N/A | 547591 | 215261 |
| CM21 0EP | 51.81027100 | 0.14182100 | 29 | 77 | 547751 | 214573 |
| CM21 0ER | 51.80922900 | 0.14227900 | 39 | 91 | 547786 | 214458 |
| CM21 0ES | 51.81082500 | 0.14103500 | 42 | 111 | 547695 | 214633 |
| CM21 0ET | 51.81206400 | 0.14115200 | 23 | 55 | 547699 | 214771 |
| CM21 0EU | 51.80944000 | 0.14400100 | 6 | 18 | 547904 | 214485 |
| CM21 0EW | 51.81027800 | 0.14184800 | N/A | N/A | 547753 | 214574 |
| CM21 0EY | 51.80859200 | 0.14264100 | 3 | 10 | 547813 | 214388 |
| CM21 0EZ | 51.81566700 | 0.14168200 | N/A | N/A | 547724 | 215173 |
| CM21 0FA | 51.81544400 | 0.14059800 | N/A | N/A | 547650 | 215146 |
| CM21 0FB | 51.81798200 | 0.14293800 | N/A | N/A | 547803 | 215433 |
| CM21 0FD | 51.81544400 | 0.14059800 | N/A | N/A | 547650 | 215146 |
| CM21 0FF | 51.81800900 | 0.14295400 | N/A | N/A | 547804 | 215436 |
| CM21 0FG | 51.81800900 | 0.14295400 | N/A | N/A | 547804 | 215436 |
| CM21 0FH | 51.81800900 | 0.14295400 | N/A | N/A | 547804 | 215436 |
| CM21 0FJ | 51.81799300 | 0.14288100 | N/A | N/A | 547799 | 215434 |
| CM21 0FL | 51.81803400 | 0.14355000 | N/A | N/A | 547845 | 215440 |
| CM21 0FN | 51.81803400 | 0.14355000 | N/A | N/A | 547845 | 215440 |
| CM21 0FP | 51.81767400 | 0.14259000 | N/A | N/A | 547780 | 215398 |
| CM21 0FQ | 51.81800900 | 0.14295400 | N/A | N/A | 547804 | 215436 |
| CM21 0FR | 51.81755700 | 0.14409300 | N/A | N/A | 547884 | 215388 |
| CM21 0HA | 51.80600800 | 0.13591800 | 68 | 192 | 547358 | 214087 |
| CM21 0HB | 51.80686900 | 0.13553800 | 11 | 24 | 547329 | 214182 |
| CM21 0HD | 51.80675700 | 0.13382100 | 10 | 36 | 547211 | 214166 |
| CM21 0HE | 51.80692300 | 0.13643700 | 5 | 11 | 547391 | 214190 |
| CM21 0HF | 51.80725700 | 0.13633700 | 2 | 4 | 547383 | 214227 |
| CM21 0HG | 51.80735100 | 0.13428400 | 4 | 8 | 547241 | 214233 |
| CM21 0HH | 51.80709600 | 0.13045700 | 18 | 149 | 546978 | 214197 |
| CM21 0HL | 51.80749400 | 0.13532100 | 8 | 24 | 547312 | 214251 |
| CM21 0HN | 51.80933300 | 0.12515200 | 42 | 94 | 546605 | 214435 |
| CM21 0HP | 51.80724800 | 0.13248100 | 5 | 11 | 547117 | 214218 |
| CM21 0HQ | 51.80740500 | 0.13227000 | 8 | 21 | 547102 | 214235 |
| CM21 0HR | 51.80657000 | 0.13223100 | 25 | 62 | 547102 | 214142 |
| CM21 0HS | 51.80578900 | 0.13313700 | 23 | 47 | 547167 | 214057 |
| CM21 0HT | 51.80819800 | 0.12563200 | 2 | 6 | 546642 | 214310 |
| CM21 0HU | 51.80868100 | 0.12487400 | 29 | 68 | 546588 | 214362 |
| CM21 0HX | 51.80718400 | 0.12448200 | 13 | 33 | 546566 | 214195 |
| CM21 0HY | 51.80753500 | 0.12309400 | 6 | 15 | 546469 | 214231 |
| CM21 0HZ | 51.80706900 | 0.12241700 | 5 | 11 | 546424 | 214178 |
| CM21 0JA | 51.80654900 | 0.12243900 | 2 | 3 | 546427 | 214120 |
| CM21 0JB | 51.80587800 | 0.12123200 | 4 | 15 | 546346 | 214043 |
| CM21 0JD | 51.80500600 | 0.12010000 | 2 | 2 | 546271 | 213944 |
| CM21 0JE | 51.80375900 | 0.10960100 | 7 | 14 | 545551 | 213784 |