This page provides postcode data for the Gwynedd Welsh preserved county. Gwynedd contains approximately 83,042 households with a population of about 191,561 (2011 census)
| Postcode | Latitude | Longitude | Easting | Northing | Grid reference | Active? |
|---|---|---|---|---|---|---|
| LL77 7YT | 53.245961 | -4.341229 | 243879 | 374663 | SH438746 | Yes |
| LL77 7YU | 53.244057 | -4.344317 | 243666 | 374458 | SH436744 | Yes |
| LL77 7YW | 53.259164 | -4.326732 | 244894 | 376100 | SH448760 | Yes |
| LL77 7YX | 53.250552 | -4.308185 | 246100 | 375102 | SH460751 | No |
| LL77 7YY | 53.243587 | -4.345326 | 243597 | 374408 | SH435744 | Yes |
| LL77 7YZ | 53.255732 | -4.312332 | 245842 | 375687 | SH458756 | Yes |
| LL77 7ZA | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 7ZB | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 7ZD | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 7ZE | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 7ZF | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 7ZG | 53.255883 | -4.311471 | 245900 | 375702 | SH458757 | No |
| LL77 7ZH | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 7ZJ | 53.257858 | -4.313946 | 245742 | 375927 | SH457759 | No |
| LL77 7ZL | 53.257858 | -4.313946 | 245742 | 375927 | SH457759 | No |
| LL77 7ZN | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 7ZP | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 7ZQ | 53.257858 | -4.313946 | 245742 | 375927 | SH457759 | No |
| LL77 7ZR | 53.253075 | -4.308861 | 246064 | 375384 | SH460753 | Yes |
| LL77 8JA | 53.282389 | -4.276373 | 248335 | 378575 | SH483785 | Yes |
| LL77 8JB | 53.288503 | -4.277808 | 248261 | 379258 | SH482792 | Yes |
| LL77 8JD | 53.284788 | -4.262773 | 249250 | 378813 | SH492788 | Yes |
| LL77 8LT | 53.249625 | -4.309634 | 246000 | 375002 | SH459750 | No |
| LL77 8UX | 53.291104 | -4.339362 | 244168 | 379680 | SH441796 | Yes |
| LL77 8WA | 53.261426 | -4.305187 | 246339 | 376305 | SH463763 | Yes |
| LL77 8WB | 53.259381 | -4.305407 | 246317 | 376078 | SH463760 | Yes |
| LL77 8YJ | 53.272321 | -4.29691 | 246930 | 377499 | SH469774 | Yes |
| LL77 8YQ | 53.266359 | -4.300699 | 246656 | 376844 | SH466768 | Yes |
| LL77 8YX | 53.260616 | -4.305699 | 246302 | 376216 | SH463762 | Yes |
| LL77 9AA | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AB | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AD | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AE | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AF | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AG | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AH | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AJ | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AL | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AN | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AP | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AQ | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AR | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AS | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AT | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AU | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AW | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AX | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9AY | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | Yes |
| LL77 9AZ | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9BA | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9BB | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9BD | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9BE | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9BF | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9BG | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9BH | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | Yes |
| LL77 9BJ | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | Yes |
| LL77 9BL | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9BN | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | Yes |
| LL77 9BP | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9BQ | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9BR | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9BS | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9BT | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9BU | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9BW | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9BX | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9BY | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9BZ | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9DA | 53.253784 | -4.308434 | 246095 | 375462 | SH460754 | No |
| LL77 9DD | 53.253046 | -4.309879 | 245996 | 375383 | SH459753 | Yes |
| LL77 9ZY | 53.253046 | -4.309879 | 245996 | 375383 | SH459753 | Yes |
| LL77 9ZZ | 53.253046 | -4.309879 | 245996 | 375383 | SH459753 | Yes |
| LL78 7JF | 53.326052 | -4.290742 | 247533 | 383462 | SH475834 | Yes |
| LL78 7JG | 53.324171 | -4.259752 | 249590 | 383187 | SH495831 | Yes |
| LL78 7JH | 53.312429 | -4.270631 | 248824 | 381904 | SH488819 | Yes |
| LL78 7JJ | 53.306575 | -4.274928 | 248517 | 381262 | SH485812 | Yes |
| LL78 7JL | 53.300313 | -4.281754 | 248040 | 380580 | SH480805 | Yes |
| LL78 7JQ | 53.32156 | -4.26134 | 249475 | 382900 | SH494828 | Yes |
| LL78 8AD | 53.316891 | -4.258676 | 249636 | 382375 | SH496823 | Yes |
| LL78 8JF | 53.319059 | -4.259542 | 249586 | 382618 | SH495826 | Yes |
| LL78 8JG | 53.317239 | -4.263559 | 249312 | 382424 | SH493824 | Yes |
| LL78 8JH | 53.318741 | -4.261146 | 249478 | 382586 | SH494825 | Yes |
| LL78 8JJ | 53.319333 | -4.260262 | 249539 | 382650 | SH495826 | Yes |
| LL78 8JL | 53.319167 | -4.262835 | 249367 | 382637 | SH493826 | Yes |
| LL78 8JN | 53.320383 | -4.261323 | 249472 | 382769 | SH494827 | Yes |
| LL78 8JP | 53.320057 | -4.259549 | 249589 | 382729 | SH495827 | Yes |
| LL78 8JQ | 53.318452 | -4.260245 | 249537 | 382552 | SH495825 | Yes |
| LL78 8JR | 53.320037 | -4.258227 | 249677 | 382724 | SH496827 | Yes |
| LL78 8JS | 53.321638 | -4.2525 | 250064 | 382890 | SH500828 | Yes |
| LL78 8JT | 53.324412 | -4.254599 | 249934 | 383203 | SH499832 | Yes |
| LL78 8JW | 53.319807 | -4.260872 | 249500 | 382704 | SH494827 | Yes |
| LL78 8JY | 53.316164 | -4.257647 | 249702 | 382292 | SH497822 | Yes |
| LL78 8JZ | 53.309676 | -4.255563 | 249818 | 381566 | SH498815 | Yes |
| LL78 8QA | 53.311389 | -4.265276 | 249177 | 381777 | SH491817 | Yes |
| LL78 8ZA | 53.311389 | -4.265276 | 249177 | 381777 | SH491817 | No |
| SY20 8QA | 52.602791 | -3.867795 | 273603 | 302195 | SH736021 | Yes |
| SY20 9AE | 52.70324 | -3.687187 | 286096 | 313066 | SH860130 | Yes |
| SY20 9AF | 52.727769 | -3.677545 | 286811 | 315779 | SH868157 | Yes |
| SY20 9AG | 52.741409 | -3.645316 | 289022 | 317246 | SH890172 | Yes |
| SY20 9AH | 52.761301 | -3.620797 | 290727 | 319421 | SH907194 | Yes |
| SY20 9AJ | 52.769565 | -3.624631 | 290489 | 320346 | SH904203 | Yes |
| SY20 9AQ | 52.756069 | -3.628619 | 290186 | 318851 | SH901188 | Yes |
| SY20 9AS | 52.621853 | -3.848795 | 274944 | 304282 | SH749042 | Yes |
| SY20 9AT | 52.631376 | -3.845827 | 275172 | 305336 | SH751053 | Yes |
| SY20 9AU | 52.629989 | -3.854029 | 274613 | 305196 | SH746051 | Yes |
| SY20 9AY | 52.616741 | -3.856616 | 274400 | 303727 | SH744037 | Yes |
| SY20 9BE | 52.662165 | -3.85823 | 274421 | 308782 | SH744087 | Yes |
| SY20 9BG | 52.662774 | -3.859513 | 274336 | 308852 | SH743088 | Yes |
| SY20 9BH | 52.662371 | -3.858815 | 274382 | 308806 | SH743088 | Yes |
| SY20 9BJ | 52.66232 | -3.858665 | 274392 | 308800 | SH743087 | Yes |
| SY20 9BL | 52.662259 | -3.858515 | 274402 | 308793 | SH744087 | Yes |
| SY20 9BN | 52.66193 | -3.85717 | 274492 | 308754 | SH744087 | Yes |
| SY20 9BP | 52.662932 | -3.858041 | 274436 | 308867 | SH744088 | Yes |
| SY20 9BQ | 52.66293 | -3.859297 | 274352 | 308869 | SH743088 | Yes |
| SY20 9BS | 52.663205 | -3.858984 | 274373 | 308899 | SH743088 | Yes |
| SY20 9BT | 52.663357 | -3.859049 | 274370 | 308916 | SH743089 | Yes |
| SY20 9BU | 52.66354 | -3.859412 | 274345 | 308937 | SH743089 | Yes |
| SY20 9BW | 52.661892 | -3.856725 | 274522 | 308749 | SH745087 | Yes |
| SY20 9BX | 52.663494 | -3.858893 | 274380 | 308931 | SH743089 | Yes |
| SY20 9BY | 52.663465 | -3.858462 | 274410 | 308927 | SH744089 | Yes |
| SY20 9BZ | 52.661246 | -3.85201 | 274839 | 308669 | SH748086 | Yes |
| SY20 9DA | 52.661088 | -3.851752 | 274856 | 308651 | SH748086 | Yes |
| SY20 9DB | 52.660957 | -3.851554 | 274869 | 308636 | SH748086 | Yes |
| SY20 9DH | 52.585584 | -3.919924 | 270022 | 300374 | SH700003 | Yes |
| SY20 9DJ | 52.586063 | -3.918676 | 270108 | 300425 | SH701004 | Yes |
| SY20 9DL | 52.586512 | -3.918164 | 270144 | 300474 | SH701004 | Yes |
| SY20 9DN | 52.584932 | -3.920235 | 269999 | 300302 | SH699003 | No |
| SY20 9DP | 52.587211 | -3.920527 | 269986 | 300556 | SH699005 | Yes |
| SY20 9DR | 52.58607 | -3.921023 | 269949 | 300430 | SH699004 | Yes |
| SY20 9DS | 52.586582 | -3.921621 | 269910 | 300488 | SH699004 | Yes |
| SY20 9DT | 52.593144 | -3.919473 | 270075 | 301214 | SH700012 | Yes |
| SY20 9DU | 52.601293 | -3.906494 | 270978 | 302097 | SH709020 | Yes |
| SY20 9DW | 52.5853 | -3.920827 | 269960 | 300344 | SH699003 | Yes |
| SY20 9DX | 52.59934 | -3.918311 | 270172 | 301901 | SH701019 | Yes |
| SY20 9DY | 52.59384 | -3.928096 | 269493 | 301307 | SH694013 | Yes |
| SY20 9DZ | 52.588151 | -3.920745 | 269974 | 300661 | SH699006 | Yes |
| SY20 9EE | 52.718986 | -3.664682 | 287657 | 314782 | SH876147 | Yes |
| SY20 9EF | 52.708906 | -3.665438 | 287580 | 313662 | SH875136 | Yes |
| SY20 9EJ | 52.712094 | -3.691703 | 285814 | 314058 | SH858140 | Yes |
| SY20 9EL | 52.698925 | -3.67894 | 286642 | 312573 | SH866125 | Yes |
| SY20 9EP | 52.693604 | -3.692128 | 285737 | 312002 | SH857120 | Yes |
| SY20 9HJ | 52.697326 | -3.683896 | 286303 | 312403 | SH863124 | Yes |
| SY20 9HL | 52.697266 | -3.683701 | 286316 | 312396 | SH863123 | No |
| SY20 9HN | 52.699073 | -3.68306 | 286364 | 312596 | SH863125 | Yes |
| SY20 9HP | 52.705255 | -3.671856 | 287137 | 313266 | SH871132 | Yes |
| SY20 9HR | 52.698527 | -3.638597 | 289367 | 312466 | SH893124 | Yes |
| SY20 9HW | 52.701377 | -3.686079 | 286166 | 312857 | SH861128 | Yes |
| SY20 9JA | 52.720791 | -3.6909 | 285891 | 315024 | SH858150 | Yes |
| SY20 9JB | 52.720117 | -3.690903 | 285889 | 314949 | SH858149 | Yes |
| SY20 9JD | 52.719429 | -3.691809 | 285826 | 314874 | SH858148 | Yes |
| SY20 9JE | 52.70497 | -3.693204 | 285694 | 313268 | SH856132 | Yes |
| SY20 9JF | 52.723294 | -3.688775 | 286041 | 315299 | SH860152 | Yes |
| SY20 9JG | 52.747925 | -3.690246 | 286006 | 318041 | SH860180 | Yes |
| SY20 9JH | 52.748957 | -3.653379 | 288497 | 318098 | SH884180 | Yes |
| SY20 9JJ | 52.582233 | -3.9369 | 268862 | 300032 | SH688000 | Yes |
| SY20 9JP | 52.600885 | -3.855753 | 274413 | 301962 | SH744019 | Yes |
| SY20 9JQ | 52.733159 | -3.64896 | 288755 | 316334 | SH887163 | Yes |
| SY20 9JR | 52.596105 | -3.87101 | 273366 | 301457 | SH733014 | Yes |
| SY20 9JS | 52.587484 | -3.903046 | 271171 | 300555 | SH711005 | Yes |
| SY20 9JT | 52.585563 | -3.922905 | 269820 | 300377 | SH698003 | Yes |
| SY20 9JU | 52.585407 | -3.918662 | 270107 | 300352 | SH701003 | Yes |
| SY20 9JX | 52.582543 | -3.902256 | 271210 | 300004 | SH712000 | Yes |
| SY20 9JY | 52.585456 | -3.923978 | 269747 | 300367 | SH697003 | Yes |
| SY20 9JZ | 52.582729 | -3.937335 | 268834 | 300088 | SH688000 | Yes |
| SY20 9LA | 52.583354 | -3.937068 | 268854 | 300157 | SH688001 | Yes |
| SY20 9LB | 52.572787 | -3.951463 | 267847 | 299008 | SN678990 | Yes |
| SY20 9LD | 52.573227 | -3.941078 | 268552 | 299038 | SN685990 | Yes |
| SY20 9LE | 52.578989 | -3.95866 | 267378 | 299711 | SN673997 | Yes |
| SY20 9LF | 52.603913 | -3.89283 | 271911 | 302364 | SH719023 | Yes |
| SY20 9LG | 52.580646 | -3.927812 | 269473 | 299839 | SN694998 | Yes |
| SY20 9LL | 52.7179 | -3.691232 | 285861 | 314703 | SH858147 | Yes |
| SY20 9LN | 52.713444 | -3.690408 | 285905 | 314206 | SH859142 | Yes |
| SY20 9LP | 52.711869 | -3.689874 | 285937 | 314030 | SH859140 | Yes |
| SY20 9LR | 52.709302 | -3.690811 | 285867 | 313746 | SH858137 | Yes |
| SY20 9LS | 52.709576 | -3.690496 | 285889 | 313776 | SH858137 | Yes |
| SY20 9LT | 52.708529 | -3.692039 | 285782 | 313662 | SH857136 | Yes |
| SY20 9LU | 52.710303 | -3.6919 | 285796 | 313859 | SH857138 | Yes |
| SY20 9LW | 52.71334 | -3.690138 | 285923 | 314194 | SH859141 | Yes |
| SY20 9LX | 52.727756 | -3.711176 | 284540 | 315831 | SH845158 | Yes |
| SY20 9ND | 52.673956 | -3.709206 | 284531 | 309844 | SH845098 | Yes |
| SY20 9NE | 52.674183 | -3.709112 | 284537 | 309869 | SH845098 | Yes |
| SY20 9NF | 52.676432 | -3.70775 | 284636 | 310117 | SH846101 | Yes |
| SY20 9NG | 52.682719 | -3.705687 | 284792 | 310813 | SH847108 | Yes |
| SY20 9NH | 52.687207 | -3.708718 | 284599 | 311317 | SH845113 | Yes |
| SY20 9NQ | 52.691767 | -3.696067 | 285466 | 311804 | SH854118 | Yes |
| SY20 9QA | 52.679968 | -3.717533 | 283984 | 310526 | SH839105 | Yes |
| SY20 9QH | 52.676733 | -3.708693 | 284573 | 310152 | SH845101 | Yes |
| SY20 9QJ | 52.676219 | -3.7082 | 284605 | 310094 | SH846100 | Yes |
| SY20 9QL | 52.676673 | -3.710348 | 284461 | 310148 | SH844101 | Yes |
| SY20 9QN | 52.677419 | -3.710377 | 284461 | 310231 | SH844102 | Yes |
| SY20 9QR | 52.67921 | -3.73379 | 282883 | 310468 | SH828104 | No |
| SY20 9QW | 52.677168 | -3.70908 | 284548 | 310201 | SH845102 | Yes |
| SY20 9QY | 52.60134 | -3.85369 | 274554 | 302009 | SH745020 | Yes |
| SY20 9QZ | 52.603851 | -3.845438 | 275120 | 302274 | SH751022 | Yes |
| SY20 9RA | 52.610645 | -3.84624 | 275085 | 303031 | SH750030 | Yes |
| SY20 9RD | 52.6462 | -3.844767 | 275286 | 306983 | SH752069 | Yes |
| SY20 9RE | 52.652978 | -3.845436 | 275260 | 307738 | SH752077 | Yes |
| SY20 9RF | 52.654234 | -3.849673 | 274977 | 307885 | SH749078 | Yes |
| SY20 9RG | 52.663102 | -3.8638 | 274047 | 308896 | SH740088 | Yes |