This is a list of postcodes in the SO1 area covering the areas of Southampton city centre (no longer in use).
 Active postcode
Active postcode 
   Postcode no longer in use
Postcode no longer in use| Postcode | Latitude | Longitude | Easting | Northing | Grid reference | Active? | 
|---|---|---|---|---|---|---|
| SO1 0WE | 50.907095 | -1.404461 | 441970 | 112127 | SU419121 | No | 
| SO1 0WF | 50.901308 | -1.403411 | 442049 | 111484 | SU420114 | No | 
| SO1 0WG | 50.895417 | -1.405036 | 441940 | 110828 | SU419108 | No | 
| SO1 0WH | 50.911025 | -1.406302 | 441837 | 112563 | SU418125 | No | 
| SO1 0WS | 50.898431 | -1.403704 | 442031 | 111164 | SU420111 | No | 
| SO1 0WZ | 50.905057 | -1.40689 | 441801 | 111899 | SU418118 | No | 
| SO1 0XA | 50.906569 | -1.405335 | 441909 | 112068 | SU419120 | No | 
| SO1 0XB | 50.905949 | -1.405457 | 441901 | 111999 | SU419119 | No | 
| SO1 0XD | 50.906569 | -1.405335 | 441909 | 112068 | SU419120 | No | 
| SO1 0XE | 50.906569 | -1.405335 | 441909 | 112068 | SU419120 | No | 
| SO1 0XF | 50.906569 | -1.405335 | 441909 | 112068 | SU419120 | No | 
| SO1 0XG | 50.897592 | -1.403032 | 442079 | 111071 | SU420110 | No | 
| SO1 0XH | 50.903524 | -1.406056 | 441861 | 111729 | SU418117 | No | 
| SO1 0XL | 50.901453 | -1.410819 | 441528 | 111496 | SU415114 | No | 
| SO1 0XN | 50.895725 | -1.403852 | 442023 | 110863 | SU420108 | No | 
| SO1 0XP | 50.900921 | -1.414139 | 441295 | 111435 | SU412114 | No | 
| SO1 0XQ | 50.908123 | -1.408459 | 441688 | 112239 | SU416122 | No | 
| SO1 0XR | 50.908123 | -1.408459 | 441688 | 112239 | SU416122 | No | 
| SO1 0XU | 50.911025 | -1.406302 | 441837 | 112563 | SU418125 | No | 
| SO1 0XW | 50.911025 | -1.406302 | 441837 | 112563 | SU418125 | No | 
| SO1 0XX | 50.903259 | -1.406913 | 441801 | 111699 | SU418116 | No | 
| SO1 0XY | 50.900554 | -1.405525 | 441901 | 111399 | SU419113 | No | 
| SO1 0YA | 50.902345 | -1.40408 | 442001 | 111599 | SU420115 | No | 
| SO1 0YB | 50.902465 | -1.402884 | 442085 | 111613 | SU420116 | No | 
| SO1 0YD | 50.902465 | -1.402884 | 442085 | 111613 | SU420116 | No | 
| SO1 0ZA | 50.905495 | -1.420609 | 440836 | 111940 | SU408119 | No | 
| SO1 0ZD | 50.90932 | -1.41409 | 441291 | 112369 | SU412123 | No | 
| SO1 1AA | 50.896904 | -1.395191 | 442631 | 110999 | SU426109 | No | 
| SO1 1AB | 50.896844 | -1.394126 | 442706 | 110993 | SU427109 | No | 
| SO1 1AD | 50.896891 | -1.392774 | 442801 | 110999 | SU428109 | No | 
| SO1 1AE | 50.896502 | -1.397443 | 442473 | 110953 | SU424109 | No | 
| SO1 1AF | 50.892388 | -1.391411 | 442901 | 110499 | SU429104 | No | 
| SO1 1AG | 50.896913 | -1.39704 | 442501 | 110999 | SU425109 | No | 
| SO1 1AH | 50.894817 | -1.398531 | 442398 | 110765 | SU423107 | No | 
| SO1 1AJ | 50.893945 | -1.402069 | 442150 | 110666 | SU421106 | No | 
| SO1 1AL | 50.896043 | -1.402739 | 442101 | 110899 | SU421108 | No | 
| SO1 1AN | 50.898748 | -1.404126 | 442001 | 111199 | SU420111 | No | 
| SO1 1AP | 50.898741 | -1.402704 | 442101 | 111199 | SU421111 | No | 
| SO1 1AQ | 50.898683 | -1.401838 | 442162 | 111193 | SU421111 | No | 
| SO1 1AR | 50.898972 | -1.400455 | 442259 | 111226 | SU422112 | No | 
| SO1 1AS | 50.897842 | -1.402716 | 442101 | 111099 | SU421110 | No | 
| SO1 1AT | 50.899454 | -1.399652 | 442315 | 111280 | SU423112 | No | 
| SO1 1AU | 50.899282 | -1.402982 | 442081 | 111259 | SU420112 | No | 
| SO1 1AW | 50.896722 | -1.403484 | 442048 | 110974 | SU420109 | No | 
| SO1 1AX | 50.89765 | -1.402135 | 442142 | 111078 | SU421110 | No | 
| SO1 1AY | 50.899645 | -1.401797 | 442164 | 111300 | SU421113 | No | 
| SO1 1AZ | 50.899074 | -1.401022 | 442219 | 111237 | SU422112 | No | 
| SO1 1BA | 50.899197 | -1.400381 | 442264 | 111251 | SU422112 | No | 
| SO1 1BB | 50.899756 | -1.400729 | 442239 | 111313 | SU422113 | No | 
| SO1 1BD | 50.900277 | -1.400537 | 442252 | 111371 | SU422113 | No | 
| SO1 1BE | 50.900699 | -1.400432 | 442259 | 111418 | SU422114 | No | 
| SO1 1BG | 50.901049 | -1.400343 | 442265 | 111457 | SU422114 | No | 
| SO1 1BH | 50.901424 | -1.401561 | 442179 | 111498 | SU421114 | No | 
| SO1 1BJ | 50.901224 | -1.401094 | 442212 | 111476 | SU422114 | No | 
| SO1 1BL | 50.90073 | -1.401214 | 442204 | 111421 | SU422114 | No | 
| SO1 1BN | 50.901476 | -1.399541 | 442321 | 111505 | SU423115 | No | 
| SO1 1BP | 50.898014 | -1.399429 | 442332 | 111120 | SU423111 | No | 
| SO1 1BQ | 50.897665 | -1.398139 | 442423 | 111082 | SU424110 | No | 
| SO1 1BR | 50.897127 | -1.401786 | 442167 | 111020 | SU421110 | No | 
| SO1 1BS | 50.897834 | -1.401294 | 442201 | 111099 | SU422110 | No | 
| SO1 1BT | 50.898479 | -1.400674 | 442244 | 111171 | SU422111 | No | 
| SO1 1BU | 50.900147 | -1.398093 | 442424 | 111358 | SU424113 | No | 
| SO1 1BW | 50.898215 | -1.40008 | 442286 | 111142 | SU422111 | No | 
| SO1 1DA | 50.901386 | -1.399385 | 442332 | 111495 | SU423114 | No | 
| SO1 1DB | 50.901178 | -1.399246 | 442342 | 111472 | SU423114 | No | 
| SO1 1DD | 50.900891 | -1.399363 | 442334 | 111440 | SU423114 | No | 
| SO1 1DE | 50.900575 | -1.399154 | 442349 | 111405 | SU423114 | No | 
| SO1 1DF | 50.900272 | -1.399627 | 442316 | 111371 | SU423113 | No | 
| SO1 1DG | 50.899898 | -1.398566 | 442391 | 111330 | SU423113 | No | 
| SO1 1DH | 50.89975 | -1.399634 | 442316 | 111313 | SU423113 | No | 
| SO1 1DJ | 50.898596 | -1.399052 | 442358 | 111185 | SU423111 | No | 
| SO1 1DL | 50.898319 | -1.399268 | 442343 | 111154 | SU423111 | No | 
| SO1 1DN | 50.89782 | -1.39845 | 442401 | 111099 | SU424110 | No | 
| SO1 1DP | 50.897934 | -1.398022 | 442431 | 111112 | SU424111 | No | 
| SO1 1DQ | 50.900749 | -1.397972 | 442432 | 111425 | SU424114 | No | 
| SO1 1DR | 50.898446 | -1.397745 | 442450 | 111169 | SU424111 | No | 
| SO1 1DS | 50.898138 | -1.397465 | 442470 | 111135 | SU424111 | No | 
| SO1 1DT | 50.898441 | -1.396878 | 442511 | 111169 | SU425111 | No | 
| SO1 1DU | 50.898298 | -1.395287 | 442623 | 111154 | SU426111 | No | 
| SO1 1DW | 50.899413 | -1.395287 | 442622 | 111278 | SU426112 | No | 
| SO1 1DX | 50.899605 | -1.395825 | 442584 | 111299 | SU425112 | No | 
| SO1 1DY | 50.898792 | -1.396987 | 442503 | 111208 | SU425112 | No | 
| SO1 1DZ | 50.899201 | -1.397807 | 442445 | 111253 | SU424112 | No | 
| SO1 1EA | 50.898913 | -1.397668 | 442455 | 111221 | SU424112 | No | 
| SO1 1ED | 50.897842 | -1.402716 | 442101 | 111099 | SU421110 | No | 
| SO1 1EE | 50.898573 | -1.397971 | 442434 | 111183 | SU424111 | No | 
| SO1 1EF | 50.898998 | -1.398534 | 442394 | 111230 | SU423112 | No | 
| SO1 1EG | 50.89911 | -1.399358 | 442336 | 111242 | SU423112 | No | 
| SO1 1EH | 50.899304 | -1.398545 | 442393 | 111264 | SU423112 | No | 
| SO1 1EJ | 50.899473 | -1.39813 | 442422 | 111283 | SU424112 | No | 
| SO1 1EP | 50.899611 | -1.397005 | 442501 | 111299 | SU425112 | No | 
| SO1 1EQ | 50.899848 | -1.397699 | 442452 | 111325 | SU424113 | No | 
| SO1 1ER | 50.899064 | -1.39906 | 442357 | 111237 | SU423112 | No | 
| SO1 1ES | 50.900248 | -1.396826 | 442513 | 111370 | SU425113 | No | 
| SO1 1EU | 50.899572 | -1.396536 | 442534 | 111295 | SU425112 | No | 
| SO1 1EW | 50.899832 | -1.394627 | 442668 | 111325 | SU426113 | No | 
| SO1 1EX | 50.900407 | -1.396298 | 442550 | 111388 | SU425113 | No | 
| SO1 1FB | 50.903705 | -1.392387 | 442822 | 111757 | SU428117 | No | 
| SO1 1FD | 50.897589 | -1.397301 | 442482 | 111074 | SU424110 | No | 
| SO1 1FE | 50.898259 | -1.396454 | 442541 | 111149 | SU425111 | No | 
| SO1 1FF | 50.896913 | -1.39704 | 442501 | 110999 | SU425109 | No | 
| SO1 1FG | 50.899589 | -1.392739 | 442801 | 111299 | SU428112 | No | 
| SO1 1FH | 50.897167 | -1.393908 | 442721 | 111029 | SU427110 | No | 
| SO1 1FJ | 50.897325 | -1.393323 | 442762 | 111047 | SU427110 | No | 
| SO1 1FL | 50.898381 | -1.388887 | 443073 | 111167 | SU430111 | No | 
| SO1 1FN | 50.902286 | -1.392704 | 442801 | 111599 | SU428115 | No | 
| SO1 1FP | 50.898446 | -1.390905 | 442931 | 111173 | SU429111 | No | 
| SO1 1FQ | 50.90221 | -1.39188 | 442859 | 111591 | SU428115 | No | 
| SO1 1FR | 50.897913 | -1.392192 | 442841 | 111113 | SU428111 | No | 
| SO1 1FS | 50.897798 | -1.394184 | 442701 | 111099 | SU427110 | No | 
| SO1 1FT | 50.896906 | -1.395618 | 442601 | 110999 | SU426109 | No | 
| SO1 1FW | 50.898114 | -1.391166 | 442913 | 111136 | SU429111 | No | 
| SO1 1FY | 50.899581 | -1.391317 | 442901 | 111299 | SU429112 | No | 
| SO1 1FZ | 50.900016 | -1.39016 | 442982 | 111348 | SU429113 | No | 
| SO1 1GA | 50.900335 | -1.389359 | 443038 | 111384 | SU430113 | No | 
| SO1 1GB | 50.900225 | -1.390726 | 442942 | 111371 | SU429113 | No | 
| SO1 1GD | 50.895129 | -1.399907 | 442301 | 110799 | SU423107 | No | 
| SO1 1GE | 50.892439 | -1.401363 | 442201 | 110499 | SU422104 | No | 
| SO1 1GF | 50.914135 | -1.423845 | 440601 | 112899 | SU406128 | No | 
| SO1 1GG | 50.883403 | -1.39295 | 442801 | 109499 | SU428094 | No | 
| SO1 1GH | 50.885216 | -1.395769 | 442601 | 109699 | SU426096 | No | 
| SO1 1GJ | 50.900827 | -1.392296 | 442831 | 111437 | SU428114 | No | 
| SO1 1GL | 50.902238 | -1.392136 | 442841 | 111594 | SU428115 | No | 
| SO1 1GN | 50.901387 | -1.392716 | 442801 | 111499 | SU428114 | No | 
| SO1 1GP | 50.896936 | -1.387711 | 443157 | 111007 | SU431110 | No | 
| SO1 1GQ | 50.896391 | -1.388259 | 443119 | 110946 | SU431109 | No | 
| SO1 1GR | 50.895689 | -1.388311 | 443116 | 110868 | SU431108 | No | 
| SO1 1GS | 50.904094 | -1.396279 | 442548 | 111798 | SU425117 | No | 
| SO1 1GT | 50.898858 | -1.400968 | 442223 | 111213 | SU422112 | No | 
| SO1 1GU | 50.899094 | -1.392731 | 442802 | 111244 | SU428112 | No | 
| SO1 1GZ | 50.898849 | -1.388824 | 443077 | 111219 | SU430112 | No | 
| SO1 1HA | 50.900786 | -1.401711 | 442169 | 111427 | SU421114 | No | 
| SO1 1HB | 50.900468 | -1.402824 | 442091 | 111391 | SU420113 | No | 
| SO1 1HD | 50.901629 | -1.402923 | 442083 | 111520 | SU420115 | No | 
| SO1 1HE | 50.901962 | -1.403004 | 442077 | 111557 | SU420115 | No | 
| SO1 1HF | 50.902465 | -1.402884 | 442085 | 111613 | SU420116 | No | 
| SO1 1HG | 50.901955 | -1.401725 | 442167 | 111557 | SU421115 | No | 
| SO1 1HH | 50.901658 | -1.401643 | 442173 | 111524 | SU421115 | No | 
| SO1 1HJ | 50.90207 | -1.401254 | 442200 | 111570 | SU421115 | No | 
| SO1 1HN | 50.901924 | -1.399179 | 442346 | 111555 | SU423115 | No | 
| SO1 1HP | 50.901598 | -1.400421 | 442259 | 111518 | SU422115 | No | 
| SO1 1HQ | 50.901629 | -1.399453 | 442327 | 111522 | SU423115 | No | 
| SO1 1HR | 50.897703 | -1.389877 | 443004 | 111091 | SU430110 | No | 
| SO1 1HS | 50.897593 | -1.387816 | 443149 | 111080 | SU431110 | No | 
| SO1 1HT | 50.897841 | -1.388823 | 443078 | 111107 | SU430111 | No | 
| SO1 1HU | 50.902093 | -1.398722 | 442378 | 111574 | SU423115 | No | 
| SO1 1HX | 50.901787 | -1.398826 | 442371 | 111540 | SU423115 | No | 
| SO1 1HY | 50.903208 | -1.396959 | 442501 | 111699 | SU425116 | No | 
| SO1 1HZ | 50.905551 | -1.394496 | 442672 | 111961 | SU426119 | No | 
| SO1 1JA | 50.905551 | -1.394496 | 442672 | 111961 | SU426119 | No | 
| SO1 1JB | 50.905551 | -1.394496 | 442672 | 111961 | SU426119 | No | 
| SO1 1JD | 50.905381 | -1.396376 | 442540 | 111941 | SU425119 | No | 
| SO1 1JF | 50.902628 | -1.389272 | 443042 | 111639 | SU430116 | No | 
| SO1 1JG | 50.897775 | -1.389919 | 443001 | 111099 | SU430110 | No | 
| SO1 1JH | 50.896876 | -1.38993 | 443001 | 110999 | SU430109 | No | 
| SO1 1JJ | 50.892417 | -1.397098 | 442501 | 110499 | SU425104 | No | 
| SO1 1JL | 50.891496 | -1.392844 | 442801 | 110399 | SU428103 | No | 
| SO1 1JN | 50.905319 | -1.398282 | 442406 | 111933 | SU424119 | No | 
| SO1 1JP | 50.903824 | -1.390992 | 442920 | 111771 | SU429117 | No | 
| SO1 1JQ | 50.895122 | -1.398485 | 442401 | 110799 | SU424107 | No | 
| SO1 1JR | 50.892417 | -1.397098 | 442501 | 110499 | SU425104 | No | 
| SO1 1JS | 50.896741 | -1.391667 | 442879 | 110983 | SU428109 | No | 
| SO1 1JT | 50.899434 | -1.399382 | 442334 | 111278 | SU423112 | No | 
| SO1 1JU | 50.902743 | -1.402739 | 442095 | 111644 | SU420116 | No | 
| SO1 1JW | 50.903276 | -1.403301 | 442055 | 111703 | SU420117 | No | 
| SO1 1JX | 50.902747 | -1.401842 | 442158 | 111645 | SU421116 | No | 
| SO1 1JY | 50.904743 | -1.403438 | 442044 | 111866 | SU420118 | No | 
| SO1 1JZ | 50.905235 | -1.399379 | 442329 | 111923 | SU423119 | No | 
| SO1 1LA | 50.906231 | -1.397261 | 442477 | 112035 | SU424120 | No | 
| SO1 1LB | 50.906598 | -1.398693 | 442376 | 112075 | SU423120 | No | 
| SO1 1LD | 50.906249 | -1.398982 | 442356 | 112036 | SU423120 | No | 
| SO1 1LE | 50.90696 | -1.397379 | 442468 | 112116 | SU424121 | No | 
| SO1 1LF | 50.905674 | -1.399245 | 442338 | 111972 | SU423119 | No | 
| SO1 1LG | 50.905704 | -1.399813 | 442298 | 111975 | SU422119 | No | 
| SO1 1LH | 50.906567 | -1.39966 | 442308 | 112071 | SU423120 | No | 
| SO1 1LJ | 50.906337 | -1.400502 | 442249 | 112045 | SU422120 | No | 
| SO1 1LL | 50.905998 | -1.400891 | 442222 | 112007 | SU422120 | No | 
| SO1 1LN | 50.903649 | -1.397067 | 442493 | 111748 | SU424117 | No | 
| SO1 1LU | 50.905665 | -1.395661 | 442590 | 111973 | SU425119 | No | 
| SO1 1LX | 50.896389 | -1.403573 | 442042 | 110937 | SU420109 | No | 
| SO1 1NA | 50.904771 | -1.403566 | 442035 | 111869 | SU420118 | No | 
| SO1 1NB | 50.905229 | -1.403589 | 442033 | 111920 | SU420119 | No | 
| SO1 1ND | 50.90513 | -1.403476 | 442041 | 111909 | SU420119 | No | 
| SO1 1NE | 50.906873 | -1.396328 | 442542 | 112107 | SU425121 | No | 
| SO1 1NF | 50.901824 | -1.397161 | 442488 | 111545 | SU424115 | No | 
| SO1 1NG | 50.901417 | -1.398404 | 442401 | 111499 | SU424114 | No | 
| SO1 1NH | 50.901402 | -1.39556 | 442601 | 111499 | SU426114 | No | 
| SO1 1NJ | 50.902653 | -1.397577 | 442458 | 111637 | SU424116 | No | 
| SO1 1NL | 50.906477 | -1.396163 | 442554 | 112063 | SU425120 | No | 
| SO1 1NP | 50.902406 | -1.396656 | 442523 | 111610 | SU425116 | No | 
| SO1 1NQ | 50.902794 | -1.395158 | 442628 | 111654 | SU426116 | No | 
| SO1 1NR | 50.903655 | -1.396611 | 442525 | 111749 | SU425117 | No | 
| SO1 1NS | 50.904446 | -1.396388 | 442540 | 111837 | SU425118 | No | 
| SO1 1NT | 50.904313 | -1.396745 | 442515 | 111822 | SU425118 | No | 
| SO1 1NU | 50.904646 | -1.396826 | 442509 | 111859 | SU425118 | No | 
| SO1 1NW | 50.904907 | -1.396851 | 442507 | 111888 | SU425118 | No | 
| SO1 1NX | 50.905066 | -1.396437 | 442536 | 111906 | SU425119 | No | 
| SO1 1NY | 50.905563 | -1.396914 | 442502 | 111961 | SU425119 | No | 
| SO1 1NZ | 50.905878 | -1.39691 | 442502 | 111996 | SU425119 | No | 
| SO1 1PA | 50.906346 | -1.39689 | 442503 | 112048 | SU425120 | No |