This page provides postcode data for the Hertfordshire English ceremonial county. Hertfordshire contains approximately 453,813 households with a population of about 1,116,077 (2011 census)
| Postcode | Latitude | Longitude | Easting | Northing | Grid reference | Active? |
|---|---|---|---|---|---|---|
| SG4 9QG | 51.945419 | -0.256123 | 519960 | 228872 | TL199288 | Yes |
| SG4 9QH | 51.945934 | -0.255041 | 520033 | 228931 | TL200289 | Yes |
| SG4 9QJ | 51.9448 | -0.253164 | 520165 | 228808 | TL201288 | Yes |
| SG4 9QL | 51.944774 | -0.250197 | 520369 | 228810 | TL203288 | Yes |
| SG4 9QN | 51.94486 | -0.246294 | 520637 | 228826 | TL206288 | Yes |
| SG4 9QP | 51.946129 | -0.256051 | 519963 | 228951 | TL199289 | Yes |
| SG4 9QQ | 51.94485 | -0.254748 | 520056 | 228811 | TL200288 | Yes |
| SG4 9QR | 51.947185 | -0.256374 | 519938 | 229068 | TL199290 | Yes |
| SG4 9QS | 51.947002 | -0.257342 | 519872 | 229046 | TL198290 | Yes |
| SG4 9QT | 51.945735 | -0.259864 | 519702 | 228901 | TL197289 | No |
| SG4 9QU | 51.948475 | -0.262668 | 519502 | 229201 | TL195292 | No |
| SG4 9QW | 51.947632 | -0.257361 | 519869 | 229116 | TL198291 | Yes |
| SG4 9QX | 51.951855 | -0.265054 | 519329 | 229573 | TL193295 | Yes |
| SG4 9QY | 51.951405 | -0.26318 | 519459 | 229526 | TL194295 | Yes |
| SG4 9QZ | 51.950305 | -0.262975 | 519476 | 229404 | TL194294 | Yes |
| SG4 9RA | 51.949377 | -0.26045 | 519652 | 229305 | TL196293 | Yes |
| SG4 9RB | 51.950122 | -0.265253 | 519320 | 229380 | TL193293 | Yes |
| SG4 9RD | 51.950545 | -0.264669 | 519359 | 229428 | TL193294 | Yes |
| SG4 9RE | 51.950801 | -0.267977 | 519131 | 229451 | TL191294 | Yes |
| SG4 9RG | 51.950565 | -0.269062 | 519057 | 229423 | TL190294 | Yes |
| SG4 9RH | 51.949953 | -0.26718 | 519188 | 229358 | TL191293 | Yes |
| SG4 9RJ | 51.948157 | -0.26738 | 519179 | 229158 | TL191291 | Yes |
| SG4 9RL | 51.946986 | -0.267207 | 519194 | 229028 | TL191290 | Yes |
| SG4 9RP | 51.94948 | -0.269905 | 519002 | 229301 | TL190293 | No |
| SG4 9RQ | 51.949398 | -0.267361 | 519177 | 229296 | TL191292 | Yes |
| SG4 9RR | 51.94948 | -0.269905 | 519002 | 229301 | TL190293 | No |
| SG4 9RS | 51.947944 | -0.269411 | 519040 | 229131 | TL190291 | Yes |
| SG4 9RT | 51.948217 | -0.27202 | 518860 | 229157 | TL188291 | Yes |
| SG4 9RU | 51.947521 | -0.268729 | 519088 | 229085 | TL190290 | Yes |
| SG4 9RW | 51.949213 | -0.268853 | 519075 | 229273 | TL190292 | Yes |
| SG4 9RX | 51.947531 | -0.268787 | 519084 | 229086 | TL190290 | No |
| SG4 9RY | 51.946806 | -0.269688 | 519024 | 229004 | TL190290 | Yes |
| SG4 9RZ | 51.946034 | -0.269136 | 519064 | 228919 | TL190289 | Yes |
| SG4 9SA | 51.945883 | -0.269287 | 519054 | 228902 | TL190289 | Yes |
| SG4 9SB | 51.947651 | -0.274559 | 518687 | 229090 | TL186290 | Yes |
| SG4 9SD | 51.94685 | -0.272654 | 518820 | 229004 | TL188290 | Yes |
| SG4 9SE | 51.947602 | -0.274255 | 518708 | 229085 | TL187290 | Yes |
| SG4 9SF | 51.94687 | -0.275826 | 518602 | 229001 | TL186290 | No |
| SG4 9SG | 51.95036 | -0.27038 | 518967 | 229398 | TL189293 | Yes |
| SG4 9SH | 51.95187 | -0.266713 | 519215 | 229572 | TL192295 | No |
| SG4 9SJ | 51.946699 | -0.267888 | 519148 | 228995 | TL191289 | Yes |
| SG4 9SL | 51.949451 | -0.269717 | 519015 | 229298 | TL190292 | Yes |
| SG4 9SN | 51.949545 | -0.274268 | 518702 | 229301 | TL187293 | No |
| SG4 9SP | 51.950355 | -0.271879 | 518864 | 229395 | TL188293 | Yes |
| SG4 9SQ | 51.951086 | -0.271458 | 518891 | 229477 | TL188294 | Yes |
| SG4 9SR | 51.951278 | -0.269835 | 519002 | 229501 | TL190295 | No |
| SG4 9SS | 51.949897 | -0.273177 | 518776 | 229342 | TL187293 | Yes |
| SG4 9ST | 51.951351 | -0.269279 | 519040 | 229510 | TL190295 | Yes |
| SG4 9SU | 51.951626 | -0.26841 | 519099 | 229542 | TL190295 | Yes |
| SG4 9SX | 51.952647 | -0.265708 | 519282 | 229660 | TL192296 | Yes |
| SG4 9SY | 51.951932 | -0.265997 | 519264 | 229580 | TL192295 | Yes |
| SG4 9SZ | 51.945552 | -0.275498 | 518628 | 228855 | TL186288 | No |
| SG4 9TA | 51.951281 | -0.266998 | 519197 | 229506 | TL191295 | Yes |
| SG4 9TB | 51.946739 | -0.275525 | 518623 | 228987 | TL186289 | Yes |
| SG4 9TD | 51.952155 | -0.268346 | 519102 | 229601 | TL191296 | No |
| SG4 9TE | 51.946007 | -0.275262 | 518643 | 228906 | TL186289 | Yes |
| SG4 9TF | 51.94687 | -0.275826 | 518602 | 229001 | TL186290 | No |
| SG4 9TG | 51.94687 | -0.275826 | 518602 | 229001 | TL186290 | No |
| SG4 9TH | 51.948822 | -0.274688 | 518675 | 229220 | TL186292 | Yes |
| SG4 9TJ | 51.947768 | -0.275791 | 518602 | 229101 | TL186291 | No |
| SG4 9TL | 51.948271 | -0.274506 | 518689 | 229159 | TL186291 | Yes |
| SG4 9TN | 51.948111 | -0.274657 | 518679 | 229141 | TL186291 | Yes |
| SG4 9TP | 51.946972 | -0.275443 | 518628 | 229013 | TL186290 | Yes |
| SG4 9TQ | 51.945971 | -0.27586 | 518602 | 228901 | TL186289 | No |
| SG4 9TR | 51.946892 | -0.275534 | 518622 | 229004 | TL186290 | No |
| SG4 9TS | 51.946336 | -0.275613 | 518618 | 228942 | TL186289 | Yes |
| SG4 9TT | 51.945399 | -0.275475 | 518630 | 228838 | TL186288 | Yes |
| SG4 9TU | 51.946254 | -0.27614 | 518582 | 228932 | TL185289 | Yes |
| SG4 9TW | 51.947289 | -0.27498 | 518659 | 229049 | TL186290 | Yes |
| SG4 9TX | 51.945336 | -0.276103 | 518587 | 228830 | TL185288 | Yes |
| SG4 9TY | 51.947289 | -0.274995 | 518658 | 229049 | TL186290 | Yes |
| SG4 9TZ | 51.945002 | -0.276596 | 518554 | 228792 | TL185287 | Yes |
| SG4 9UA | 51.946181 | -0.274222 | 518714 | 228927 | TL187289 | Yes |
| SG4 9UB | 51.953033 | -0.266857 | 519202 | 229701 | TL192297 | No |
| SG4 9UD | 51.953033 | -0.266857 | 519202 | 229701 | TL192297 | No |
| SG4 9UE | 51.953469 | -0.264716 | 519348 | 229753 | TL193297 | No |
| SG4 9UH | 51.953033 | -0.266857 | 519202 | 229701 | TL192297 | No |
| SG4 9UJ | 51.953469 | -0.264716 | 519348 | 229753 | TL193297 | Yes |
| SG4 9UL | 51.953352 | -0.262901 | 519473 | 229743 | TL194297 | Yes |
| SG4 9UN | 51.953654 | -0.264446 | 519366 | 229774 | TL193297 | Yes |
| SG4 9UP | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9UR | 51.950272 | -0.262598 | 519502 | 229401 | TL195294 | No |
| SG4 9UT | 51.950272 | -0.262598 | 519502 | 229401 | TL195294 | No |
| SG4 9UU | 51.950272 | -0.262598 | 519502 | 229401 | TL195294 | No |
| SG4 9UW | 51.950572 | -0.261626 | 519568 | 229436 | TL195294 | Yes |
| SG4 9UX | 51.944192 | -0.266195 | 519271 | 228719 | TL192287 | No |
| SG4 9UY | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9UZ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9WA | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9WB | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9WP | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9WQ | 51.896091 | -0.202978 | 523748 | 223475 | TL237234 | Yes |
| SG4 9WR | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9WS | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9WT | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9WU | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9WW | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9WX | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9WY | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9WZ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9XA | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9XB | 51.944192 | -0.266195 | 519271 | 228719 | TL192287 | No |
| SG4 9XD | 51.944192 | -0.266195 | 519271 | 228719 | TL192287 | No |
| SG4 9XE | 51.950251 | -0.261144 | 519602 | 229401 | TL196294 | No |
| SG4 9XF | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9XG | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9XH | 51.944228 | -0.266165 | 519273 | 228723 | TL192287 | No |
| SG4 9XJ | 51.944192 | -0.266195 | 519271 | 228719 | TL192287 | No |
| SG4 9XL | 51.944228 | -0.266165 | 519273 | 228723 | TL192287 | No |
| SG4 9XN | 51.944228 | -0.266165 | 519273 | 228723 | TL192287 | No |
| SG4 9XP | 51.944228 | -0.266165 | 519273 | 228723 | TL192287 | No |
| SG4 9XR | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9XS | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9XT | 51.944228 | -0.266165 | 519273 | 228723 | TL192287 | No |
| SG4 9XU | 51.944228 | -0.266165 | 519273 | 228723 | TL192287 | No |
| SG4 9XW | 51.944228 | -0.266165 | 519273 | 228723 | TL192287 | No |
| SG4 9XX | 51.944228 | -0.266165 | 519273 | 228723 | TL192287 | No |
| SG4 9XY | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9XZ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9YD | 51.939269 | -0.264654 | 519390 | 228174 | TL193281 | Yes |
| SG4 9YH | 51.946391 | -0.276906 | 518529 | 228946 | TL185289 | Yes |
| SG4 9YJ | 51.942881 | -0.268166 | 519139 | 228570 | TL191285 | Yes |
| SG4 9YP | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9YR | 51.944228 | -0.266165 | 519273 | 228723 | TL192287 | No |
| SG4 9YS | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9YX | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9ZG | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9ZJ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9ZN | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9ZQ | 51.944272 | -0.266701 | 519236 | 228727 | TL192287 | No |
| SG4 9ZR | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9ZT | 51.896091 | -0.202978 | 523748 | 223475 | TL237234 | Yes |
| SG4 9ZU | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9ZX | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG5 1AA | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG5 1AB | 51.946933 | -0.276463 | 518558 | 229007 | TL185290 | Yes |
| SG5 1AD | 51.947568 | -0.276846 | 518530 | 229077 | TL185290 | Yes |
| SG5 1AE | 51.946387 | -0.278478 | 518421 | 228943 | TL184289 | Yes |
| SG5 1AF | 51.946728 | -0.278421 | 518424 | 228981 | TL184289 | Yes |
| SG5 1AG | 51.964313 | -0.279375 | 518312 | 230935 | TL183309 | Yes |
| SG5 1AH | 51.946457 | -0.27897 | 518387 | 228950 | TL183289 | Yes |
| SG5 1AJ | 51.946014 | -0.278769 | 518402 | 228901 | TL184289 | No |
| SG5 1AL | 51.948689 | -0.277211 | 518502 | 229201 | TL185292 | No |
| SG5 1AN | 51.948689 | -0.277211 | 518502 | 229201 | TL185292 | No |
| SG5 1AP | 51.947305 | -0.279767 | 518330 | 229043 | TL183290 | Yes |
| SG5 1AQ | 51.946063 | -0.278461 | 518423 | 228907 | TL184289 | No |
| SG5 1AR | 51.947611 | -0.280395 | 518286 | 229076 | TL182290 | Yes |
| SG5 1AS | 51.949094 | -0.276628 | 518541 | 229247 | TL185292 | No |
| SG5 1AT | 51.948405 | -0.278124 | 518440 | 229168 | TL184291 | Yes |
| SG5 1AU | 51.947569 | -0.281226 | 518229 | 229070 | TL182290 | Yes |
| SG5 1AW | 51.948689 | -0.277211 | 518502 | 229201 | TL185292 | No |
| SG5 1AX | 51.948077 | -0.278413 | 518421 | 229131 | TL184291 | No |
| SG5 1AY | 51.947811 | -0.278699 | 518402 | 229101 | TL184291 | No |
| SG5 1AZ | 51.952731 | -0.269575 | 519016 | 229663 | TL190296 | Yes |
| SG5 1BA | 51.946035 | -0.280223 | 518302 | 228901 | TL183289 | No |
| SG5 1BB | 51.946704 | -0.27928 | 518365 | 228977 | TL183289 | Yes |
| SG5 1BD | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG5 1BE | 51.946561 | -0.2793 | 518364 | 228961 | TL183289 | No |
| SG5 1BF | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG5 1BG | 51.946655 | -0.279602 | 518343 | 228971 | TL183289 | Yes |
| SG5 1BH | 51.948058 | -0.278952 | 518384 | 229128 | TL183291 | Yes |
| SG5 1BJ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG5 1BL | 51.947811 | -0.278699 | 518402 | 229101 | TL184291 | No |
| SG5 1BN | 51.948403 | -0.278619 | 518406 | 229167 | TL184291 | No |
| SG5 1BP | 51.948689 | -0.277211 | 518502 | 229201 | TL185292 | No |
| SG5 1BQ | 51.947228 | -0.279435 | 518353 | 229035 | TL183290 | Yes |
| SG5 1BS | 51.94972 | -0.2764 | 518555 | 229317 | TL185293 | Yes |
| SG5 1BT | 51.949604 | -0.27588 | 518591 | 229305 | TL185293 | Yes |
| SG5 1BU | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG5 1BW | 51.947811 | -0.278699 | 518402 | 229101 | TL184291 | No |
| SG5 1BX | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG5 1BY | 51.949319 | -0.274829 | 518664 | 229275 | TL186292 | Yes |
| SG5 1BZ | 51.949281 | -0.274714 | 518672 | 229271 | TL186292 | No |
| SG5 1DA | 51.954014 | -0.27184 | 518857 | 229802 | TL188298 | Yes |
| SG5 1DB | 51.949127 | -0.275215 | 518638 | 229253 | TL186292 | Yes |
| SG5 1DD | 51.951869 | -0.276987 | 518509 | 229555 | TL185295 | No |
| SG5 1DE | 51.949281 | -0.275893 | 518591 | 229269 | TL185292 | No |
| SG5 1DF | 51.948689 | -0.277211 | 518502 | 229201 | TL185292 | No |
| SG5 1DG | 51.949469 | -0.276497 | 518549 | 229289 | TL185292 | Yes |
| SG5 1DH | 51.954918 | -0.275851 | 518579 | 229896 | TL185298 | No |
| SG5 1DJ | 51.948699 | -0.275479 | 518621 | 229205 | TL186292 | Yes |
| SG5 1DL | 51.947443 | -0.278103 | 518444 | 229061 | TL184290 | Yes |
| SG5 1DN | 51.947258 | -0.277746 | 518469 | 229041 | TL184290 | Yes |
| SG5 1DP | 51.954919 | -0.275865 | 518578 | 229896 | TL185298 | No |
| SG5 1DQ | 51.948645 | -0.275466 | 518622 | 229199 | TL186291 | No |
| SG5 1DR | 51.947673 | -0.278487 | 518417 | 229086 | TL184290 | Yes |
| SG5 1DS | 51.94714 | -0.278318 | 518430 | 229027 | TL184290 | Yes |
| SG5 1DT | 51.94714 | -0.278914 | 518389 | 229026 | TL183290 | Yes |
| SG5 1DU | 51.94711 | -0.278741 | 518401 | 229023 | TL184290 | Yes |
| SG5 1DW | 51.947553 | -0.277676 | 518473 | 229074 | TL184290 | Yes |
| SG5 1DX | 51.950789 | -0.276359 | 518555 | 229436 | TL185294 | Yes |
| SG5 1DY | 51.947486 | -0.279221 | 518367 | 229064 | TL183290 | Yes |
| SG5 1DZ | 51.946934 | -0.280188 | 518302 | 229001 | TL183290 | No |
| SG5 1EA | 51.946912 | -0.278734 | 518402 | 229001 | TL184290 | No |
| SG5 1EB | 51.94746 | -0.279295 | 518362 | 229061 | TL183290 | No |
| SG5 1ED | 51.947863 | -0.279163 | 518370 | 229106 | TL183291 | Yes |
| SG5 1EE | 51.947985 | -0.279522 | 518345 | 229119 | TL183291 | Yes |
| SG5 1EF | 51.949463 | -0.276672 | 518537 | 229288 | TL185292 | No |
| SG5 1EG | 51.948147 | -0.280127 | 518303 | 229136 | TL183291 | Yes |
| SG5 1EH | 51.948834 | -0.280421 | 518281 | 229212 | TL182292 | Yes |