This page provides postcode data for the Welwyn Hatfield, unparished area parish. Welwyn Hatfield, unparished area contains approximately 19,553 households with a population of about 46,630 (2011 census)
| Postcode | Latitude | Longitude | Easting | Northing | Grid reference | Active? |
|---|---|---|---|---|---|---|
| AL6 0BS | 51.823136 | -0.205722 | 523759 | 215357 | TL237153 | Yes |
| AL6 0DP | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0EX | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0FA | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0FB | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0GY | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0HR | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0JA | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0JE | 51.803057 | -0.155187 | 527298 | 213211 | TL272132 | Yes |
| AL6 0ND | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0RT | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0WG | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | Yes |
| AL6 0WJ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0WQ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0WT | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0WU | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0WW | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0WY | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | Yes |
| AL6 0XA | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0XL | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0XU | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0XX | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0XY | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0XZ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0YJ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0YQ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0YX | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0YZ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0ZD | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0ZG | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0ZL | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0ZN | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0ZQ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0ZR | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0ZS | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0ZU | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | Yes |
| AL6 0ZW | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0ZY | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 0ZZ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9AG | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9AH | 51.81486 | -0.223867 | 522531 | 214406 | TL225144 | Yes |
| AL6 9AJ | 51.812663 | -0.226013 | 522389 | 214158 | TL223141 | Yes |
| AL6 9AL | 51.815332 | -0.220555 | 522758 | 214464 | TL227144 | Yes |
| AL6 9AN | 51.813601 | -0.22322 | 522579 | 214267 | TL225142 | No |
| AL6 9AZ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9FA | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9HH | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | Yes |
| AL6 9LJ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9NZ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9QG | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9TH | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9WJ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9WQ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9XJ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9XL | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9XQ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9XU | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9XW | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9XZ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9ZF | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9ZJ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9ZL | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9ZQ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9ZR | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9ZS | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9ZT | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9ZW | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL6 9ZX | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL7 1AA | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | Yes |
| AL7 1AB | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | Yes |
| AL7 1AD | 51.803228 | -0.191109 | 524821 | 213168 | TL248131 | Yes |
| AL7 1AE | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL7 1AF | 51.801754 | -0.192894 | 524702 | 213001 | TL247130 | No |
| AL7 1AG | 51.803574 | -0.194272 | 524602 | 213201 | TL246132 | No |
| AL7 1AH | 51.804773 | -0.193919 | 524623 | 213335 | TL246133 | Yes |
| AL7 1AJ | 51.804513 | -0.188084 | 525026 | 213316 | TL250133 | Yes |
| AL7 1AL | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL7 1AN | 51.803847 | -0.189213 | 524950 | 213240 | TL249132 | Yes |
| AL7 1AP | 51.801017 | -0.185903 | 525186 | 212931 | TL251129 | Yes |
| AL7 1AQ | 51.803574 | -0.194272 | 524602 | 213201 | TL246132 | No |
| AL7 1AR | 51.803529 | -0.191372 | 524802 | 213201 | TL248132 | No |
| AL7 1AS | 51.804642 | -0.194127 | 524609 | 213320 | TL246133 | No |
| AL7 1AT | 51.801954 | -0.187737 | 525057 | 213032 | TL250130 | No |
| AL7 1AU | 51.803122 | -0.192375 | 524734 | 213154 | TL247131 | Yes |
| AL7 1AW | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL7 1AX | 51.80411 | -0.190551 | 524857 | 213267 | TL248132 | Yes |
| AL7 1AY | 51.804286 | -0.192024 | 524755 | 213284 | TL247132 | Yes |
| AL7 1AZ | 51.80455 | -0.18933 | 524940 | 213318 | TL249133 | No |
| AL7 1BA | 51.804681 | -0.189107 | 524955 | 213333 | TL249133 | Yes |
| AL7 1BB | 51.809938 | -0.188302 | 524996 | 213919 | TL249139 | No |
| AL7 1BD | 51.803712 | -0.193903 | 524627 | 213217 | TL246132 | Yes |
| AL7 1BE | 51.80392 | -0.191618 | 524784 | 213244 | TL247132 | No |
| AL7 1BF | 51.809938 | -0.188302 | 524996 | 213919 | TL249139 | No |
| AL7 1BG | 51.798791 | -0.189647 | 524934 | 212677 | TL249126 | No |
| AL7 1BH | 51.801844 | -0.195835 | 524499 | 213006 | TL244130 | Yes |
| AL7 1BJ | 51.804379 | -0.190483 | 524861 | 213297 | TL248132 | Yes |
| AL7 1BL | 51.805878 | -0.197327 | 524385 | 213452 | TL243134 | No |
| AL7 1BN | 51.802675 | -0.194307 | 524602 | 213101 | TL246131 | No |
| AL7 1BP | 51.80267 | -0.19396 | 524626 | 213101 | TL246131 | No |
| AL7 1BQ | 51.801528 | -0.186942 | 525113 | 212986 | TL251129 | Yes |
| AL7 1BS | 51.800288 | -0.194606 | 524588 | 212835 | TL245128 | No |
| AL7 1BT | 51.809938 | -0.188302 | 524996 | 213919 | TL249139 | No |
| AL7 1BU | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL7 1BW | 51.802232 | -0.194122 | 524616 | 213052 | TL246130 | Yes |
| AL7 1BX | 51.816013 | -0.19038 | 524836 | 214591 | TL248145 | Yes |
| AL7 1BY | 51.815401 | -0.190317 | 524842 | 214523 | TL248145 | Yes |
| AL7 1BZ | 51.809501 | -0.188494 | 524984 | 213870 | TL249138 | No |
| AL7 1DA | 51.810804 | -0.192532 | 524702 | 214008 | TL247140 | Yes |
| AL7 1DB | 51.811484 | -0.19236 | 524712 | 214084 | TL247140 | Yes |
| AL7 1DD | 51.812429 | -0.190059 | 524868 | 214193 | TL248141 | Yes |
| AL7 1DE | 51.81229 | -0.190355 | 524848 | 214177 | TL248141 | Yes |
| AL7 1DF | 51.813136 | -0.189247 | 524922 | 214273 | TL249142 | No |
| AL7 1DG | 51.813605 | -0.188764 | 524954 | 214326 | TL249143 | Yes |
| AL7 1DH | 51.812097 | -0.191871 | 524744 | 214153 | TL247141 | Yes |
| AL7 1DJ | 51.811829 | -0.193724 | 524617 | 214120 | TL246141 | Yes |
| AL7 1DL | 51.813458 | -0.193833 | 524605 | 214301 | TL246143 | Yes |
| AL7 1DN | 51.814824 | -0.192589 | 524687 | 214455 | TL246144 | Yes |
| AL7 1DP | 51.816307 | -0.191354 | 524768 | 214622 | TL247146 | Yes |
| AL7 1DQ | 51.813514 | -0.189827 | 524881 | 214314 | TL248143 | Yes |
| AL7 1DR | 51.81644 | -0.192394 | 524696 | 214635 | TL246146 | Yes |
| AL7 1DS | 51.814941 | -0.190219 | 524850 | 214472 | TL248144 | Yes |
| AL7 1DT | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL7 1DU | 51.814738 | -0.190518 | 524830 | 214449 | TL248144 | Yes |
| AL7 1DW | 51.81643 | -0.192902 | 524661 | 214633 | TL246146 | Yes |
| AL7 1DX | 51.814122 | -0.190775 | 524814 | 214380 | TL248143 | Yes |
| AL7 1DY | 51.809501 | -0.188494 | 524984 | 213870 | TL249138 | No |
| AL7 1DZ | 51.812634 | -0.191661 | 524757 | 214213 | TL247142 | Yes |
| AL7 1EA | 51.812627 | -0.192387 | 524707 | 214211 | TL247142 | Yes |
| AL7 1EB | 51.814022 | -0.191301 | 524778 | 214368 | TL247143 | Yes |
| AL7 1ED | 51.814405 | -0.192258 | 524711 | 214409 | TL247144 | Yes |
| AL7 1EE | 51.813825 | -0.191962 | 524733 | 214345 | TL247143 | Yes |
| AL7 1EF | 51.813149 | -0.19357 | 524624 | 214267 | TL246142 | Yes |
| AL7 1EG | 51.813268 | -0.192579 | 524692 | 214282 | TL246142 | Yes |
| AL7 1EH | 51.80535 | -0.189907 | 524898 | 213406 | TL248134 | No |
| AL7 1EJ | 51.809938 | -0.188302 | 524996 | 213919 | TL249139 | No |
| AL7 1EL | 51.808088 | -0.191379 | 524789 | 213708 | TL247137 | Yes |
| AL7 1EN | 51.809141 | -0.188479 | 524986 | 213830 | TL249138 | Yes |
| AL7 1EP | 51.805346 | -0.190792 | 524837 | 213404 | TL248134 | Yes |
| AL7 1EQ | 51.811821 | -0.193217 | 524652 | 214120 | TL246141 | Yes |
| AL7 1ER | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL7 1ES | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL7 1ET | 51.810104 | -0.190878 | 524818 | 213933 | TL248139 | No |
| AL7 1EU | 51.809487 | -0.189336 | 524926 | 213867 | TL249138 | Yes |
| AL7 1EW | 51.805785 | -0.191877 | 524761 | 213451 | TL247134 | Yes |
| AL7 1EX | 51.808148 | -0.190013 | 524883 | 213717 | TL248137 | No |
| AL7 1EY | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL7 1EZ | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL7 1FA | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL7 1FB | 51.804378 | -0.191585 | 524785 | 213295 | TL247132 | No |
| AL7 1FE | 51.804091 | -0.199255 | 524257 | 213250 | TL242132 | Yes |
| AL7 1FF | 51.796511 | -0.177701 | 525764 | 212444 | TL257124 | Yes |
| AL7 1FG | 51.79579 | -0.177005 | 525814 | 212365 | TL258123 | Yes |
| AL7 1FH | 51.796373 | -0.178635 | 525700 | 212427 | TL256124 | Yes |
| AL7 1FJ | 51.796687 | -0.179202 | 525660 | 212461 | TL256124 | Yes |
| AL7 1FL | 51.797011 | -0.179769 | 525620 | 212496 | TL256124 | Yes |
| AL7 1FN | 51.797576 | -0.180254 | 525585 | 212558 | TL255125 | Yes |
| AL7 1FP | 51.797396 | -0.177956 | 525744 | 212542 | TL257125 | Yes |
| AL7 1FQ | 51.797778 | -0.179362 | 525646 | 212582 | TL256125 | Yes |
| AL7 1FR | 51.797576 | -0.179689 | 525624 | 212559 | TL256125 | Yes |
| AL7 1FS | 51.807093 | -0.189228 | 524940 | 213601 | TL249136 | Yes |
| AL7 1FT | 51.807704 | -0.189218 | 524939 | 213669 | TL249136 | Yes |
| AL7 1FU | 51.805849 | -0.197198 | 524394 | 213449 | TL243134 | Yes |
| AL7 1FW | 51.798634 | -0.180067 | 525595 | 212676 | TL255126 | Yes |
| AL7 1FX | 51.809215 | -0.188026 | 525017 | 213839 | TL250138 | Yes |
| AL7 1FY | 51.80627 | -0.197674 | 524360 | 213495 | TL243134 | Yes |
| AL7 1FZ | 51.809814 | -0.188974 | 524950 | 213904 | TL249139 | Yes |
| AL7 1GA | 51.809981 | -0.196323 | 524443 | 213910 | TL244139 | Yes |
| AL7 1GB | 51.80935 | -0.192721 | 524693 | 213846 | TL246138 | Yes |
| AL7 1GD | 51.798791 | -0.189647 | 524934 | 212677 | TL249126 | Yes |
| AL7 1GE | 51.807785 | -0.186299 | 525140 | 213683 | TL251136 | No |
| AL7 1GF | 51.803194 | -0.199987 | 524209 | 213149 | TL242131 | Yes |
| AL7 1GG | 51.799132 | -0.191969 | 524773 | 212711 | TL247127 | Yes |
| AL7 1GH | 51.805423 | -0.197578 | 524369 | 213401 | TL243134 | Yes |
| AL7 1GJ | 51.806064 | -0.195971 | 524478 | 213475 | TL244134 | Yes |
| AL7 1GL | 51.798791 | -0.189647 | 524934 | 212677 | TL249126 | No |
| AL7 1GN | 51.802802 | -0.189081 | 524962 | 213124 | TL249131 | No |
| AL7 1GP | 51.805727 | -0.199234 | 524254 | 213432 | TL242134 | Yes |
| AL7 1GQ | 51.805937 | -0.199994 | 524201 | 213454 | TL242134 | Yes |
| AL7 1GR | 51.805698 | -0.198495 | 524305 | 213430 | TL243134 | Yes |
| AL7 1GS | 51.806194 | -0.198591 | 524297 | 213485 | TL242134 | Yes |
| AL7 1GT | 51.806371 | -0.199614 | 524226 | 213503 | TL242135 | Yes |
| AL7 1GU | 51.80391 | -0.188674 | 524987 | 213248 | TL249132 | Yes |
| AL7 1GW | 51.801311 | -0.191577 | 524794 | 212954 | TL247129 | Yes |
| AL7 1GX | 51.801307 | -0.185471 | 525215 | 212964 | TL252129 | Yes |
| AL7 1GY | 51.798663 | -0.190668 | 524864 | 212661 | TL248126 | Yes |
| AL7 1GZ | 51.798896 | -0.191224 | 524825 | 212686 | TL248126 | Yes |
| AL7 1HA | 51.805154 | -0.188827 | 524973 | 213386 | TL249133 | Yes |
| AL7 1HB | 51.804234 | -0.200381 | 524179 | 213264 | TL241132 | Yes |
| AL7 1HD | 51.804489 | -0.195874 | 524489 | 213300 | TL244132 | No |
| AL7 1HE | 51.805406 | -0.19649 | 524444 | 213401 | TL244134 | Yes |
| AL7 1HF | 51.803018 | -0.199632 | 524234 | 213130 | TL242131 | No |
| AL7 1HG | 51.802406 | -0.191417 | 524802 | 213076 | TL248130 | Yes |
| AL7 1HH | 51.805126 | -0.194645 | 524572 | 213373 | TL245133 | Yes |
| AL7 1HJ | 51.804789 | -0.199619 | 524230 | 213327 | TL242133 | Yes |
| AL7 1HL | 51.801388 | -0.197173 | 524408 | 212953 | TL244129 | Yes |
| AL7 1HN | 51.792831 | -0.17289 | 526106 | 212043 | TL261120 | Yes |
| AL7 1HP | 51.803598 | -0.187627 | 525060 | 213215 | TL250132 | No |
| AL7 1HQ | 51.793737 | -0.174506 | 525992 | 212141 | TL259121 | Yes |
| AL7 1HR | 51.793491 | -0.173139 | 526087 | 212116 | TL260121 | Yes |
| AL7 1HS | 51.800945 | -0.198728 | 524302 | 212901 | TL243129 | No |