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 9JZ | 51.81342900 | 0.15748000 | 3 | 12 | 548820 | 214956 |
| CM21 9LD | 51.81409000 | 0.16155700 | N/A | N/A | 549099 | 215038 |
| CM21 9LE | 51.80389100 | 0.16124600 | 2 | 6 | 549111 | 213903 |
| CM21 9LF | 51.80702900 | 0.16259800 | 41 | 113 | 549194 | 214255 |
| CM21 9LG | 51.80909400 | 0.16281200 | 30 | 86 | 549202 | 214485 |
| CM21 9LH | 51.81164700 | 0.16293700 | 31 | 83 | 549202 | 214769 |
| CM21 9LJ | 51.80954000 | 0.16013800 | 41 | 95 | 549016 | 214529 |
| CM21 9LL | 51.80902600 | 0.16120100 | 30 | 84 | 549091 | 214474 |
| CM21 9LN | 51.81061500 | 0.16088500 | 46 | 121 | 549064 | 214650 |
| CM21 9LP | 51.80856100 | 0.16055500 | 32 | 75 | 549048 | 214421 |
| CM21 9LQ | 51.81156000 | 0.16228000 | 28 | 74 | 549157 | 214758 |
| CM21 9LR | 51.80843400 | 0.15710900 | 3 | 15 | 548811 | 214400 |
| CM21 9LW | 51.80820700 | 0.16074100 | 31 | 85 | 549062 | 214382 |
| CM21 9LZ | 51.81531100 | 0.15340600 | 47 | 94 | 548533 | 215157 |
| CM21 9NA | 51.81065600 | 0.15174800 | 7 | 12 | 548434 | 214636 |
| CM21 9NB | 51.80950500 | 0.15076400 | 28 | 73 | 548370 | 214506 |
| CM21 9ND | 51.81079700 | 0.15427600 | 24 | 55 | 548608 | 214657 |
| CM21 9NE | 51.81048100 | 0.15491700 | 6 | 9 | 548653 | 214623 |
| CM21 9NF | 51.81045000 | 0.15268100 | 17 | 49 | 548499 | 214615 |
| CM21 9NG | 51.81002400 | 0.15432900 | 9 | 20 | 548614 | 214571 |
| CM21 9NH | 51.81008500 | 0.15350500 | 8 | 12 | 548557 | 214576 |
| CM21 9NJ | 51.80963400 | 0.15406400 | 7 | 23 | 548597 | 214527 |
| CM21 9NL | 51.80958000 | 0.15353900 | 16 | 40 | 548561 | 214520 |
| CM21 9NN | 51.80812300 | 0.15454300 | 46 | 124 | 548635 | 214360 |
| CM21 9NP | 51.80887400 | 0.15283800 | 33 | 101 | 548515 | 214440 |
| CM21 9NQ | 51.81075400 | 0.15031600 | 3 | 10 | 548335 | 214644 |
| CM21 9NR | 51.80836500 | 0.15213200 | 49 | 129 | 548468 | 214382 |
| CM21 9NS | 51.80754200 | 0.15139600 | 26 | 64 | 548420 | 214289 |
| CM21 9NT | 51.80815400 | 0.15091800 | 9 | 20 | 548385 | 214356 |
| CM21 9NU | 51.80979500 | 0.15212700 | 13 | 26 | 548463 | 214541 |
| CM21 9NW | 51.80825500 | 0.15373700 | 27 | 70 | 548579 | 214373 |
| CM21 9NX | 51.80964200 | 0.14968300 | 11 | 22 | 548295 | 214519 |
| CM21 9NY | 51.80861600 | 0.14922800 | 36 | 95 | 548267 | 214404 |
| CM21 9PE | 51.80924600 | 0.15854200 | 47 | 77 | 548907 | 214493 |
| CM21 9PF | 51.81052100 | 0.15912600 | 52 | 83 | 548943 | 214636 |
| CM21 9PL | 51.81501500 | 0.15484300 | 36 | 80 | 548633 | 215127 |
| CM21 9PN | 51.80729500 | 0.16000100 | 9 | 18 | 549014 | 214279 |
| CM21 9PP | 51.80705700 | 0.15872800 | 23 | 62 | 548927 | 214250 |
| CM21 9PR | 51.80732600 | 0.16122100 | 36 | 76 | 549098 | 214285 |
| CM21 9PS | 51.80649100 | 0.16068800 | 34 | 74 | 549064 | 214191 |
| CM21 9PT | 51.80700100 | 0.15981300 | 51 | 85 | 549002 | 214246 |
| CM21 9PU | 51.80666700 | 0.15892700 | 17 | 50 | 548942 | 214207 |
| CM21 9PW | 51.80736900 | 0.15878400 | 8 | 11 | 548930 | 214285 |
| CM21 9PX | 51.81398400 | 0.15662200 | 35 | 43 | 548759 | 215016 |
| CM21 9PY | 51.81189500 | 0.16117900 | 18 | 48 | 549080 | 214793 |
| CM21 9PZ | 51.81122700 | 0.16032000 | 38 | 53 | 549023 | 214717 |
| CM21 9QA | 51.81218100 | 0.15135400 | 4 | 7 | 548402 | 214805 |
| CM21 9QD | 51.81254000 | 0.14855900 | 6 | 9 | 548208 | 214839 |
| CM21 9QE | 51.81322600 | 0.14793800 | N/A | N/A | 548163 | 214914 |
| CM21 9QG | 51.81242700 | 0.15131000 | N/A | N/A | 548398 | 214832 |