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 9NH | 50.933594 | -1.457516 | 438218 | 115045 | SU382150 | No | 
| SO1 9NJ | 50.933223 | -1.457122 | 438246 | 115004 | SU382150 | No | 
| SO1 9NL | 50.933033 | -1.456683 | 438277 | 114983 | SU382149 | No | 
| SO1 9NN | 50.932623 | -1.457527 | 438218 | 114937 | SU382149 | No | 
| SO1 9NP | 50.932548 | -1.458752 | 438132 | 114928 | SU381149 | No | 
| SO1 9NQ | 50.933171 | -1.459399 | 438086 | 114997 | SU380149 | No | 
| SO1 9NR | 50.93276 | -1.459988 | 438045 | 114951 | SU380149 | No | 
| SO1 9NS | 50.933246 | -1.460039 | 438041 | 115005 | SU380150 | No | 
| SO1 9NT | 50.933456 | -1.460719 | 437993 | 115028 | SU379150 | No | 
| SO1 9NU | 50.932467 | -1.460717 | 437994 | 114918 | SU379149 | No | 
| SO1 9NW | 50.931951 | -1.459926 | 438050 | 114861 | SU380148 | No | 
| SO1 9NX | 50.931406 | -1.458865 | 438125 | 114801 | SU381148 | No | 
| SO1 9NY | 50.932172 | -1.461161 | 437963 | 114885 | SU379148 | No | 
| SO1 9NZ | 50.932864 | -1.463074 | 437828 | 114961 | SU378149 | No | 
| SO1 9PA | 50.933632 | -1.463749 | 437780 | 115046 | SU377150 | No | 
| SO1 9PB | 50.933419 | -1.46247 | 437870 | 115023 | SU378150 | No | 
| SO1 9PD | 50.933077 | -1.464438 | 437732 | 114984 | SU377149 | No | 
| SO1 9PE | 50.932939 | -1.463657 | 437787 | 114969 | SU377149 | No | 
| SO1 9PF | 50.932162 | -1.464904 | 437700 | 114882 | SU376148 | No | 
| SO1 9PG | 50.931819 | -1.464595 | 437722 | 114844 | SU377148 | No | 
| SO1 9PH | 50.932023 | -1.463966 | 437766 | 114867 | SU377148 | No | 
| SO1 9PJ | 50.931427 | -1.46339 | 437807 | 114801 | SU378148 | No | 
| SO1 9PL | 50.932295 | -1.46254 | 437866 | 114898 | SU378148 | No | 
| SO1 9PN | 50.931781 | -1.46219 | 437891 | 114841 | SU378148 | No | 
| SO1 9PP | 50.931695 | -1.461096 | 437968 | 114832 | SU379148 | No | 
| SO1 9PQ | 50.931368 | -1.460302 | 438024 | 114796 | SU380147 | No | 
| SO1 9PR | 50.930896 | -1.461304 | 437954 | 114743 | SU379147 | No | 
| SO1 9PS | 50.930622 | -1.462275 | 437886 | 114712 | SU378147 | No | 
| SO1 9PT | 50.931233 | -1.460418 | 438016 | 114781 | SU380147 | No | 
| SO1 9PU | 50.935365 | -1.461252 | 437954 | 115240 | SU379152 | No | 
| SO1 9PW | 50.936437 | -1.459817 | 438054 | 115360 | SU380153 | No | 
| SO1 9PX | 50.93684 | -1.4593 | 438090 | 115405 | SU380154 | No | 
| SO1 9PY | 50.937132 | -1.458286 | 438161 | 115438 | SU381154 | No | 
| SO1 9PZ | 50.937777 | -1.457766 | 438197 | 115510 | SU381155 | No | 
| SO1 9QA | 50.938012 | -1.456184 | 438308 | 115537 | SU383155 | No | 
| SO1 9QB | 50.937801 | -1.457097 | 438244 | 115513 | SU382155 | No | 
| SO1 9QD | 50.937225 | -1.455182 | 438379 | 115450 | SU383154 | No | 
| SO1 9QE | 50.936831 | -1.455528 | 438355 | 115406 | SU383154 | No | 
| SO1 9QF | 50.936389 | -1.455164 | 438381 | 115357 | SU383153 | No | 
| SO1 9QG | 50.936434 | -1.457099 | 438245 | 115361 | SU382153 | No | 
| SO1 9QH | 50.936817 | -1.456368 | 438296 | 115404 | SU382154 | No | 
| SO1 9QJ | 50.935988 | -1.458029 | 438180 | 115311 | SU381153 | No | 
| SO1 9QL | 50.935706 | -1.459242 | 438095 | 115279 | SU380152 | No | 
| SO1 9QN | 50.935362 | -1.460655 | 437996 | 115240 | SU379152 | No | 
| SO1 9QP | 50.933728 | -1.461214 | 437958 | 115058 | SU379150 | No | 
| SO1 9QQ | 50.936778 | -1.457721 | 438201 | 115399 | SU382153 | No | 
| SO1 9QR | 50.929883 | -1.456136 | 438318 | 114633 | SU383146 | No | 
| SO1 9QS | 50.934992 | -1.458382 | 438156 | 115200 | SU381152 | No | 
| SO1 9QT | 50.931572 | -1.457867 | 438195 | 114820 | SU381148 | No | 
| SO1 9QU | 50.934628 | -1.457532 | 438216 | 115160 | SU382151 | No | 
| SO1 9QW | 50.928106 | -1.453155 | 438529 | 114437 | SU385144 | No | 
| SO1 9RA | 50.93415 | -1.45139 | 438648 | 115110 | SU386151 | No | 
| SO1 9RB | 50.931356 | -1.452092 | 438601 | 114799 | SU386147 | No | 
| SO1 9RD | 50.933789 | -1.451067 | 438671 | 115070 | SU386150 | No | 
| SO1 9RE | 50.933731 | -1.452192 | 438592 | 115063 | SU385150 | No | 
| SO1 9TX | 50.933201 | -1.462032 | 437901 | 114999 | SU379149 | No | 
| SO1 9WA | 50.949762 | -1.459449 | 438069 | 116842 | SU380168 | No | 
| SO1 9WB | 50.94173 | -1.478671 | 436725 | 115939 | SU367159 | No | 
| SO1 9WD | 50.932266 | -1.454244 | 438449 | 114899 | SU384148 | No | 
| SO1 9WE | 50.931158 | -1.453901 | 438474 | 114776 | SU384147 | No | 
| SO1 9XA | 50.947399 | -1.46359 | 437780 | 116577 | SU377165 | No | 
| SO1 9XB | 50.946084 | -1.463235 | 437806 | 116431 | SU378164 | No | 
| SO1 9XD | 50.94622 | -1.465426 | 437652 | 116445 | SU376164 | No | 
| SO1 9XE | 50.945785 | -1.466669 | 437565 | 116396 | SU375163 | No | 
| SO1 9XF | 50.946415 | -1.466776 | 437557 | 116466 | SU375164 | No | 
| SO1 9XG | 50.946802 | -1.464864 | 437691 | 116510 | SU376165 | No | 
| SO1 9XH | 50.944944 | -1.465597 | 437641 | 116303 | SU376163 | No | 
| SO1 9XJ | 50.944772 | -1.461371 | 437938 | 116286 | SU379162 | No | 
| SO1 9XL | 50.943492 | -1.460859 | 437975 | 116144 | SU379161 | No | 
| SO1 9XN | 50.942583 | -1.460728 | 437985 | 116043 | SU379160 | No | 
| SO1 9XP | 50.937648 | -1.466848 | 437559 | 115491 | SU375154 | No | 
| SO1 9XQ | 50.936611 | -1.46834 | 437455 | 115375 | SU374153 | No | 
| SO1 9XR | 50.937119 | -1.46526 | 437671 | 115433 | SU376154 | No | 
| SO1 9XS | 50.935867 | -1.466825 | 437562 | 115293 | SU375152 | No | 
| SO1 9XT | 50.937409 | -1.465897 | 437626 | 115465 | SU376154 | No | 
| SO1 9XU | 50.936156 | -1.471035 | 437266 | 115323 | SU372153 | No | 
| SO1 9XW | 50.951354 | -1.467317 | 437515 | 117015 | SU375170 | No | 
| SO1 9XX | 50.955647 | -1.473988 | 437043 | 117489 | SU370174 | No | 
| SO1 9XY | 50.949822 | -1.470566 | 437288 | 116843 | SU372168 | No | 
| SO1 9XZ | 50.949353 | -1.470173 | 437316 | 116791 | SU373167 | No | 
| SO1 9YA | 50.944922 | -1.47455 | 437012 | 116296 | SU370162 | No | 
| SO1 9YB | 50.94628 | -1.488812 | 436009 | 116440 | SU360164 | No | 
| SO1 9YD | 50.943291 | -1.484006 | 436349 | 116110 | SU363161 | No | 
| SO1 9YE | 50.939818 | -1.491729 | 435809 | 115720 | SU358157 | No | 
| SO1 9YF | 50.936512 | -1.466249 | 437602 | 115365 | SU376153 | No | 
| SO1 9YG | 50.934146 | -1.471982 | 437201 | 115099 | SU372150 | No | 
| SO1 9YH | 50.932697 | -1.469779 | 437357 | 114939 | SU373149 | No | 
| SO1 9YJ | 50.941612 | -1.484622 | 436307 | 115923 | SU363159 | No | 
| SO1 9YL | 50.949088 | -1.479144 | 436686 | 116757 | SU366167 | No | 
| SO1 9YN | 50.948437 | -1.486625 | 436161 | 116681 | SU361166 | No | 
| SO1 9YP | 50.944357 | -1.461148 | 437954 | 116240 | SU379162 | No | 
| SO1 9YQ | 50.936875 | -1.479067 | 436701 | 115399 | SU367153 | No | 
| SO1 9YR | 50.937596 | -1.465297 | 437668 | 115486 | SU376154 | No | 
| SO1 9YS | 50.937209 | -1.479163 | 436694 | 115436 | SU366154 | No | 
| SO1 9YT | 50.938125 | -1.476861 | 436855 | 115539 | SU368155 | No | 
| SO1 9YU | 50.938804 | -1.475957 | 436918 | 115615 | SU369156 | No | 
| SO1 9YW | 50.935748 | -1.476205 | 436903 | 115275 | SU369152 | No | 
| SO1 9YX | 50.938839 | -1.477793 | 436789 | 115618 | SU367156 | No | 
| SO1 9YY | 50.936032 | -1.479461 | 436674 | 115305 | SU366153 | No | 
| SO1 9YZ | 50.935701 | -1.477942 | 436781 | 115269 | SU367152 | No | 
| SO1 9ZA | 50.948603 | -1.487477 | 436101 | 116699 | SU361166 | No |