This is a list of postcodes in the CM1 area covering the areas of Chelmsford, Writtle. The area contains approximately 26,010 households with a population of about 62,632 (2011 census)
Active postcode
Postcode no longer in use| Postcode | Latitude | Longitude | Easting | Northing | Grid reference | Active? |
|---|---|---|---|---|---|---|
| CM1 4XS | 51.752328 | 0.454587 | 569527 | 208810 | TL695088 | Yes |
| CM1 4XT | 51.752802 | 0.455135 | 569563 | 208864 | TL695088 | Yes |
| CM1 4XU | 51.753933 | 0.454834 | 569538 | 208989 | TL695089 | Yes |
| CM1 4XW | 51.754476 | 0.452922 | 569404 | 209045 | TL694090 | Yes |
| CM1 4XX | 51.754374 | 0.456104 | 569624 | 209041 | TL696090 | Yes |
| CM1 4XY | 51.753575 | 0.456437 | 569650 | 208953 | TL696089 | Yes |
| CM1 4XZ | 51.753947 | 0.458008 | 569757 | 208998 | TL697089 | Yes |
| CM1 4YA | 51.755193 | 0.457351 | 569707 | 209135 | TL697091 | Yes |
| CM1 4YB | 51.756148 | 0.456838 | 569668 | 209240 | TL696092 | Yes |
| CM1 4YD | 51.756554 | 0.459773 | 569869 | 209292 | TL698092 | Yes |
| CM1 4YE | 51.75667 | 0.458547 | 569784 | 209302 | TL697093 | Yes |
| CM1 4YF | 51.755791 | 0.459702 | 569867 | 209207 | TL698092 | Yes |
| CM1 4YG | 51.755876 | 0.455244 | 569559 | 209206 | TL695092 | Yes |
| CM1 4YH | 51.73722 | 0.476016 | 571063 | 207180 | TL710071 | No |
| CM1 4YJ | 51.755894 | 0.452636 | 569379 | 209202 | TL693092 | Yes |
| CM1 4YL | 51.755443 | 0.451409 | 569296 | 209149 | TL692091 | Yes |
| CM1 4YN | 51.73722 | 0.476016 | 571063 | 207180 | TL710071 | No |
| CM1 4YP | 51.754739 | 0.451516 | 569306 | 209071 | TL693090 | Yes |
| CM1 4YQ | 51.755485 | 0.453687 | 569453 | 209159 | TL694091 | Yes |
| CM1 4YR | 51.754019 | 0.448521 | 569102 | 208984 | TL691089 | Yes |
| CM1 4YS | 51.73722 | 0.476016 | 571063 | 207180 | TL710071 | No |
| CM1 4YT | 51.753155 | 0.442084 | 568661 | 208873 | TL686088 | Yes |
| CM1 4YU | 51.73722 | 0.476016 | 571063 | 207180 | TL710071 | No |
| CM1 4YW | 51.73722 | 0.476016 | 571063 | 207180 | TL710071 | No |
| CM1 4YX | 51.748992 | 0.376678 | 564162 | 208261 | TL641082 | No |
| CM1 4YY | 51.748956 | 0.37669 | 564163 | 208257 | TL641082 | Yes |
| CM1 4ZA | 51.748992 | 0.376678 | 564162 | 208261 | TL641082 | No |
| CM1 4ZB | 51.753403 | 0.459935 | 569892 | 208942 | TL698089 | Yes |
| CM1 4ZQ | 51.748992 | 0.376678 | 564162 | 208261 | TL641082 | No |
| CM1 4ZW | 51.73722 | 0.476016 | 571063 | 207180 | TL710071 | No |
| CM1 4ZY | 51.748992 | 0.376678 | 564162 | 208261 | TL641082 | No |
| CM1 5AA | 51.758458 | 0.474063 | 570848 | 209537 | TL708095 | No |
| CM1 5AB | 51.758783 | 0.474443 | 570873 | 209574 | TL708095 | No |
| CM1 5AD | 51.759982 | 0.475161 | 570918 | 209709 | TL709097 | No |
| CM1 5AE | 51.75889 | 0.474043 | 570845 | 209585 | TL708095 | No |
| CM1 5AF | 51.758998 | 0.474035 | 570844 | 209597 | TL708095 | No |
| CM1 5AG | 51.759772 | 0.474019 | 570840 | 209683 | TL708096 | No |
| CM1 5AH | 51.762101 | 0.474031 | 570832 | 209942 | TL708099 | No |
| CM1 5AJ | 51.764513 | 0.47309 | 570758 | 210208 | TL707102 | No |
| CM1 5AL | 51.764059 | 0.474558 | 570861 | 210161 | TL708101 | No |
| CM1 5AN | 51.764002 | 0.471309 | 570637 | 210147 | TL706101 | No |
| CM1 5AP | 51.761629 | 0.474657 | 570877 | 209891 | TL708098 | No |
| CM1 5AQ | 51.760667 | 0.473793 | 570821 | 209782 | TL708097 | No |
| CM1 5AR | 51.760946 | 0.47504 | 570906 | 209816 | TL709098 | No |
| CM1 5AS | 51.763632 | 0.472636 | 570730 | 210109 | TL707101 | No |
| CM1 5AT | 51.765039 | 0.472032 | 570683 | 210264 | TL706102 | No |
| CM1 5AU | 51.766154 | 0.471571 | 570647 | 210387 | TL706103 | No |
| CM1 5AW | 51.766055 | 0.47245 | 570708 | 210378 | TL707103 | No |
| CM1 5AX | 51.767328 | 0.47178 | 570657 | 210518 | TL706105 | No |
| CM1 5AY | 51.764929 | 0.470823 | 570600 | 210249 | TL705102 | No |
| CM1 5AZ | 51.765816 | 0.470973 | 570607 | 210348 | TL706103 | No |
| CM1 5BA | 51.765302 | 0.471075 | 570616 | 210291 | TL706102 | No |
| CM1 5BB | 51.768497 | 0.471786 | 570653 | 210648 | TL706106 | No |
| CM1 5BD | 51.766439 | 0.470456 | 570569 | 210416 | TL705104 | No |
| CM1 5BE | 51.768118 | 0.470592 | 570572 | 210603 | TL705106 | No |
| CM1 5BG | 51.772399 | 0.468825 | 570434 | 211075 | TL704110 | No |
| CM1 5BH | 51.767005 | 0.474314 | 570833 | 210488 | TL708104 | No |
| CM1 5BJ | 51.766657 | 0.474179 | 570825 | 210449 | TL708104 | No |
| CM1 5BL | 51.766495 | 0.476764 | 571004 | 210437 | TL710104 | No |
| CM1 5BN | 51.766935 | 0.472513 | 570709 | 210476 | TL707104 | No |
| CM1 5BP | 51.763704 | 0.47393 | 570819 | 210120 | TL708101 | No |
| CM1 5BQ | 51.765456 | 0.475693 | 570934 | 210319 | TL709103 | No |
| CM1 5BS | 51.762701 | 0.47073 | 570602 | 210001 | TL706100 | No |
| CM1 5BT | 51.755509 | 0.477423 | 571091 | 209217 | TL710092 | No |
| CM1 5BU | 51.756729 | 0.473331 | 570804 | 209343 | TL708093 | No |
| CM1 5BW | 51.772991 | 0.469785 | 570498 | 211143 | TL704111 | No |
| CM1 5BX | 51.758096 | 0.472015 | 570708 | 209492 | TL707094 | No |
| CM1 5BY | 51.757792 | 0.471085 | 570645 | 209456 | TL706094 | No |
| CM1 5BZ | 51.757929 | 0.469701 | 570549 | 209468 | TL705094 | No |
| CM1 5DA | 51.758346 | 0.46997 | 570566 | 209515 | TL705095 | No |
| CM1 5DB | 51.757234 | 0.471953 | 570707 | 209396 | TL707093 | No |
| CM1 5DD | 51.756696 | 0.47146 | 570675 | 209335 | TL706093 | No |
| CM1 5DE | 51.75637 | 0.471543 | 570682 | 209299 | TL706092 | No |
| CM1 5DF | 51.756465 | 0.472157 | 570724 | 209311 | TL707093 | No |
| CM1 5DG | 51.755812 | 0.471991 | 570715 | 209238 | TL707092 | No |
| CM1 5DH | 51.758177 | 0.474598 | 570886 | 209507 | TL708095 | No |
| CM1 5DJ | 51.760301 | 0.473251 | 570785 | 209740 | TL707097 | No |
| CM1 5DL | 51.761772 | 0.472129 | 570702 | 209901 | TL707099 | No |
| CM1 5DN | 51.763218 | 0.471816 | 570675 | 210061 | TL706100 | No |
| CM1 5DP | 51.764271 | 0.467048 | 570342 | 210167 | TL703101 | No |
| CM1 5DQ | 51.758201 | 0.473469 | 570808 | 209507 | TL708095 | No |
| CM1 5DR | 51.763377 | 0.468927 | 570475 | 210072 | TL704100 | No |
| CM1 5DS | 51.76306 | 0.466025 | 570276 | 210030 | TL702100 | No |
| CM1 5DT | 51.76407 | 0.468892 | 570470 | 210149 | TL704101 | No |
| CM1 5DU | 51.763875 | 0.46491 | 570196 | 210118 | TL701101 | No |
| CM1 5DW | 51.763958 | 0.467799 | 570395 | 210134 | TL703101 | No |
| CM1 5DX | 51.764574 | 0.46547 | 570232 | 210197 | TL702101 | No |
| CM1 5DY | 51.762978 | 0.464354 | 570161 | 210017 | TL701100 | No |
| CM1 5DZ | 51.762672 | 0.467366 | 570370 | 209990 | TL703099 | No |
| CM1 5EA | 51.757242 | 0.475011 | 570918 | 209404 | TL709094 | No |
| CM1 5EB | 51.756638 | 0.476369 | 571014 | 209340 | TL710093 | No |
| CM1 5ED | 51.75573 | 0.475073 | 570928 | 209236 | TL709092 | No |
| CM1 5EE | 51.758429 | 0.472453 | 570737 | 209530 | TL707095 | No |
| CM1 5EF | 51.756804 | 0.474002 | 570850 | 209353 | TL708093 | No |
| CM1 5EG | 51.755454 | 0.473232 | 570802 | 209201 | TL708092 | No |
| CM1 5EH | 51.769381 | 0.472516 | 570700 | 210748 | TL706107 | No |
| CM1 5EJ | 51.770885 | 0.47283 | 570716 | 210916 | TL707109 | No |
| CM1 5EL | 51.774444 | 0.472953 | 570711 | 211312 | TL707113 | No |
| CM1 5EN | 51.772092 | 0.473621 | 570766 | 211052 | TL707110 | No |
| CM1 5EP | 51.773541 | 0.468424 | 570402 | 211201 | TL704112 | No |
| CM1 5EQ | 51.761923 | 0.471789 | 570678 | 209917 | TL706099 | No |
| CM1 5ER | 51.771361 | 0.467305 | 570333 | 210956 | TL703109 | No |
| CM1 5ES | 51.776581 | 0.462835 | 570005 | 211526 | TL700115 | No |
| CM1 5ET | 51.774593 | 0.465452 | 570193 | 211311 | TL701113 | No |
| CM1 5EU | 51.778007 | 0.461318 | 569895 | 211681 | TL698116 | No |
| CM1 5EW | 51.771488 | 0.471979 | 570655 | 210981 | TL706109 | No |
| CM1 5EX | 51.778337 | 0.459697 | 569782 | 211714 | TL697117 | No |
| CM1 5EY | 51.779939 | 0.458349 | 569683 | 211889 | TL696118 | No |
| CM1 5EZ | 51.771039 | 0.470635 | 570564 | 210928 | TL705109 | No |
| CM1 5FA | 51.757491 | 0.490486 | 571985 | 209468 | TL719094 | No |
| CM1 5FB | 51.756305 | 0.492522 | 572130 | 209341 | TL721093 | No |
| CM1 5FD | 51.756029 | 0.491971 | 572093 | 209309 | TL720093 | No |
| CM1 5FE | 51.756964 | 0.490747 | 572005 | 209410 | TL720094 | No |
| CM1 5FF | 51.756831 | 0.492319 | 572114 | 209399 | TL721093 | No |
| CM1 5FG | 51.758081 | 0.491055 | 572022 | 209535 | TL720095 | No |
| CM1 5FH | 51.750536 | 0.498232 | 572546 | 208713 | TL725087 | No |
| CM1 5FJ | 51.750241 | 0.497331 | 572485 | 208678 | TL724086 | No |
| CM1 5FL | 51.756158 | 0.499035 | 572580 | 209340 | TL725093 | No |
| CM1 5FN | 51.755973 | 0.500981 | 572715 | 209324 | TL727093 | No |
| CM1 5FP | 51.754304 | 0.502888 | 572853 | 209143 | TL728091 | No |
| CM1 5FQ | 51.758694 | 0.490596 | 571988 | 209602 | TL719096 | No |
| CM1 5FR | 51.753044 | 0.502079 | 572802 | 209001 | TL728090 | No |
| CM1 5FS | 51.749191 | 0.498056 | 572539 | 208563 | TL725085 | No |
| CM1 5FT | 51.748694 | 0.498594 | 572578 | 208509 | TL725085 | No |
| CM1 5FU | 51.758526 | 0.498035 | 572502 | 209601 | TL725096 | No |
| CM1 5FW | 51.75654 | 0.500505 | 572680 | 209386 | TL726093 | No |
| CM1 5FX | 51.755148 | 0.502558 | 572827 | 209236 | TL728092 | No |
| CM1 5FY | 51.750759 | 0.500012 | 572668 | 208742 | TL726087 | No |
| CM1 5FZ | 51.749544 | 0.497539 | 572502 | 208601 | TL725086 | No |
| CM1 5GA | 51.754527 | 0.500466 | 572685 | 209162 | TL726091 | No |
| CM1 5GB | 51.751869 | 0.496059 | 572391 | 208856 | TL723088 | No |
| CM1 5GD | 51.752264 | 0.496936 | 572450 | 208902 | TL724089 | No |
| CM1 5GE | 51.752413 | 0.495814 | 572372 | 208916 | TL723089 | No |
| CM1 5GF | 51.75202 | 0.495285 | 572337 | 208871 | TL723088 | No |
| CM1 5GG | 51.751772 | 0.497213 | 572471 | 208848 | TL724088 | No |
| CM1 5GH | 51.752949 | 0.497278 | 572471 | 208979 | TL724089 | No |
| CM1 5GJ | 51.753562 | 0.497631 | 572493 | 209048 | TL724090 | No |
| CM1 5GL | 51.754521 | 0.493554 | 572208 | 209145 | TL722091 | No |
| CM1 5GN | 51.754785 | 0.501842 | 572779 | 209194 | TL727091 | No |
| CM1 5GP | 51.747778 | 0.495993 | 572402 | 208401 | TL724084 | No |
| CM1 5GQ | 51.752801 | 0.499588 | 572631 | 208968 | TL726089 | No |
| CM1 5GR | 51.742511 | 0.489908 | 572002 | 207801 | TL720078 | No |
| CM1 5GS | 51.742511 | 0.489908 | 572002 | 207801 | TL720078 | No |
| CM1 5GT | 51.742511 | 0.489908 | 572002 | 207801 | TL720078 | No |
| CM1 5GU | 51.753479 | 0.484991 | 571621 | 209009 | TL716090 | No |
| CM1 5GW | 51.754268 | 0.501191 | 572736 | 209135 | TL727091 | No |
| CM1 5GX | 51.746818 | 0.498838 | 572602 | 208301 | TL726083 | No |
| CM1 5GY | 51.751523 | 0.507197 | 573161 | 208844 | TL731088 | No |
| CM1 5GZ | 51.752603 | 0.50588 | 573066 | 208961 | TL730089 | No |
| CM1 5HA | 51.770227 | 0.46862 | 570428 | 210833 | TL704108 | No |
| CM1 5HB | 51.770075 | 0.471148 | 570603 | 210822 | TL706108 | No |
| CM1 5HD | 51.770496 | 0.470374 | 570548 | 210867 | TL705108 | No |
| CM1 5HE | 51.768981 | 0.470146 | 570538 | 210698 | TL705106 | No |
| CM1 5HF | 51.762572 | 0.463173 | 570081 | 209969 | TL700099 | No |
| CM1 5HG | 51.759823 | 0.459979 | 569871 | 209656 | TL698096 | No |
| CM1 5HH | 51.762481 | 0.452443 | 569341 | 209934 | TL693099 | No |
| CM1 5HJ | 51.773715 | 0.469984 | 570509 | 211224 | TL705112 | No |
| CM1 5HL | 51.773338 | 0.469543 | 570480 | 211181 | TL704111 | No |
| CM1 5HN | 51.772554 | 0.472182 | 570665 | 211100 | TL706110 | No |
| CM1 5HP | 51.772293 | 0.471342 | 570608 | 211069 | TL706110 | No |
| CM1 5HQ | 51.762708 | 0.453223 | 569394 | 209961 | TL693099 | No |
| CM1 5HR | 51.743167 | 0.493349 | 572237 | 207882 | TL722078 | No |
| CM1 5HS | 51.744382 | 0.49201 | 572140 | 208014 | TL721080 | No |
| CM1 5HT | 51.743495 | 0.495264 | 572368 | 207923 | TL723079 | No |
| CM1 5HU | 51.744918 | 0.49259 | 572178 | 208075 | TL721080 | No |
| CM1 5HW | 51.773794 | 0.471815 | 570635 | 211237 | TL706112 | No |
| CM1 5HX | 51.745645 | 0.490993 | 572065 | 208152 | TL720081 | No |
| CM1 5HY | 51.744812 | 0.493381 | 572233 | 208065 | TL722080 | No |
| CM1 5HZ | 51.744858 | 0.495426 | 572374 | 208075 | TL723080 | No |
| CM1 5JA | 51.746414 | 0.49628 | 572427 | 208250 | TL724082 | No |
| CM1 5JB | 51.747675 | 0.494089 | 572271 | 208385 | TL722083 | No |
| CM1 5JD | 51.744043 | 0.493571 | 572249 | 207980 | TL722079 | No |
| CM1 5JE | 51.748958 | 0.492523 | 572158 | 208524 | TL721085 | No |
| CM1 5JF | 51.749528 | 0.494032 | 572260 | 208591 | TL722085 | No |
| CM1 5JG | 51.746013 | 0.494838 | 572329 | 208202 | TL723082 | No |
| CM1 5JH | 51.746025 | 0.493405 | 572230 | 208200 | TL722081 | No |
| CM1 5JJ | 51.746685 | 0.493253 | 572217 | 208273 | TL722082 | No |
| CM1 5JL | 51.745264 | 0.494101 | 572281 | 208117 | TL722081 | No |
| CM1 5JN | 51.74626 | 0.49165 | 572108 | 208222 | TL721082 | No |
| CM1 5JP | 51.74762 | 0.497926 | 572536 | 208388 | TL725083 | No |
| CM1 5JQ | 51.747034 | 0.493779 | 572252 | 208313 | TL722083 | No |
| CM1 5JR | 51.747428 | 0.498495 | 572576 | 208368 | TL725083 | No |
| CM1 5JS | 51.747466 | 0.500076 | 572685 | 208376 | TL726083 | No |
| CM1 5JT | 51.747067 | 0.499402 | 572640 | 208330 | TL726083 | No |
| CM1 5JU | 51.747821 | 0.497343 | 572495 | 208409 | TL724084 | No |
| CM1 5JW | 51.745756 | 0.49465 | 572317 | 208173 | TL723081 | No |
| CM1 5JX | 51.748697 | 0.495508 | 572365 | 208502 | TL723085 | No |
| CM1 5JY | 51.74644 | 0.49844 | 572576 | 208258 | TL725082 | No |
| CM1 5JZ | 51.74643 | 0.497643 | 572521 | 208255 | TL725082 | No |
| CM1 5LA | 51.748267 | 0.494586 | 572303 | 208452 | TL723084 | No |
| CM1 5LB | 51.748777 | 0.497236 | 572484 | 208515 | TL724085 | No |
| CM1 5LD | 51.761528 | 0.483709 | 571502 | 209901 | TL715099 | No |
| CM1 5LE | 51.773283 | 0.472585 | 570690 | 211182 | TL706111 | No |
| CM1 5LF | 51.776799 | 0.461005 | 569878 | 211546 | TL698115 | No |
| CM1 5LG | 51.774029 | 0.467871 | 570362 | 211254 | TL703112 | No |
| CM1 5LH | 51.745328 | 0.487673 | 571837 | 208109 | TL718081 | No |
| CM1 5LJ | 51.746134 | 0.489122 | 571934 | 208202 | TL719082 | No |
| CM1 5LL | 51.747684 | 0.490656 | 572034 | 208378 | TL720083 | No |
| CM1 5LN | 51.749021 | 0.491223 | 572068 | 208528 | TL720085 | No |
| CM1 5LP | 51.749902 | 0.492966 | 572185 | 208630 | TL721086 | No |