This page provides postcode data for the North Hertfordshire, unparished area parish. North Hertfordshire, unparished area contains approximately 32,585 households with a population of about 76,192 (2011 census)
| Postcode | Latitude | Longitude | Easting | Northing | Grid reference | Active? |
|---|---|---|---|---|---|---|
| SG4 0RG | 51.95991 | -0.259416 | 519695 | 230478 | TL196304 | Yes |
| SG4 0RH | 51.952333 | -0.258488 | 519779 | 229637 | TL197296 | Yes |
| SG4 0RJ | 51.961445 | -0.256809 | 519870 | 230653 | TL198306 | Yes |
| SG4 0RL | 51.963817 | -0.26644 | 519202 | 230901 | TL192309 | No |
| SG4 0RN | 51.966492 | -0.26488 | 519302 | 231201 | TL193312 | No |
| SG4 0RQ | 51.960808 | -0.258129 | 519781 | 230580 | TL197305 | Yes |
| SG4 0RS | 51.950503 | -0.255707 | 519975 | 229438 | TL199294 | Yes |
| SG4 0RT | 51.95616 | -0.256403 | 519912 | 230066 | TL199300 | No |
| SG4 0RU | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0RW | 51.956161 | -0.256418 | 519911 | 230066 | TL199300 | No |
| SG4 0RY | 51.967944 | -0.263951 | 519362 | 231364 | TL193313 | Yes |
| SG4 0RZ | 51.964695 | -0.26495 | 519302 | 231001 | TL193310 | No |
| SG4 0SA | 51.963097 | -0.270063 | 518955 | 230815 | TL189308 | Yes |
| SG4 0SB | 51.964183 | -0.269875 | 518965 | 230936 | TL189309 | Yes |
| SG4 0SD | 51.962084 | -0.270873 | 518902 | 230701 | TL189307 | No |
| SG4 0SE | 51.963577 | -0.268443 | 519065 | 230871 | TL190308 | Yes |
| SG4 0SF | 51.962245 | -0.268378 | 519073 | 230723 | TL190307 | No |
| SG4 0SH | 51.96386 | -0.269349 | 519002 | 230901 | TL190309 | No |
| SG4 0SJ | 51.962084 | -0.270873 | 518902 | 230701 | TL189307 | No |
| SG4 0SL | 51.965738 | -0.271096 | 518877 | 231107 | TL188311 | Yes |
| SG4 0SN | 51.965232 | -0.270301 | 518933 | 231052 | TL189310 | No |
| SG4 0SP | 51.962961 | -0.269384 | 519002 | 230801 | TL190308 | No |
| SG4 0SQ | 51.962567 | -0.268875 | 519038 | 230758 | TL190307 | Yes |
| SG4 0SR | 51.962084 | -0.270873 | 518902 | 230701 | TL189307 | No |
| SG4 0ST | 51.963691 | -0.26822 | 519080 | 230884 | TL190308 | No |
| SG4 0SX | 51.968364 | -0.268025 | 519081 | 231404 | TL190314 | No |
| SG4 0SZ | 51.968044 | -0.26402 | 519357 | 231375 | TL193313 | No |
| SG4 0TA | 51.965901 | -0.263826 | 519376 | 231137 | TL193311 | No |
| SG4 0TD | 51.964673 | -0.263495 | 519402 | 231001 | TL194310 | No |
| SG4 0TF | 51.963774 | -0.26353 | 519402 | 230901 | TL194309 | No |
| SG4 0TG | 51.964673 | -0.263495 | 519402 | 231001 | TL194310 | No |
| SG4 0TH | 51.965572 | -0.26346 | 519402 | 231101 | TL194311 | No |
| SG4 0TJ | 51.965861 | -0.262969 | 519435 | 231134 | TL194311 | Yes |
| SG4 0TL | 51.964695 | -0.26495 | 519302 | 231001 | TL193310 | No |
| SG4 0TN | 51.962919 | -0.266474 | 519202 | 230801 | TL192308 | No |
| SG4 0TP | 51.966314 | -0.263796 | 519377 | 231183 | TL193311 | Yes |
| SG4 0TQ | 51.966405 | -0.263224 | 519416 | 231194 | TL194311 | No |
| SG4 0TR | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0TS | 51.962138 | -0.264744 | 519323 | 230717 | TL193307 | Yes |
| SG4 0TT | 51.965467 | -0.261863 | 519512 | 231092 | TL195310 | No |
| SG4 0TU | 51.963817 | -0.26644 | 519202 | 230901 | TL192309 | No |
| SG4 0TW | 51.964385 | -0.265311 | 519278 | 230966 | TL192309 | Yes |
| SG4 0TX | 51.962897 | -0.26502 | 519302 | 230801 | TL193308 | No |
| SG4 0TY | 51.967804 | -0.266023 | 519220 | 231345 | TL192313 | Yes |
| SG4 0TZ | 51.965838 | -0.265692 | 519248 | 231127 | TL192311 | Yes |
| SG4 0UB | 51.962678 | -0.263544 | 519404 | 230779 | TL194307 | Yes |
| SG4 0UD | 51.963634 | -0.263783 | 519385 | 230885 | TL193308 | Yes |
| SG4 0UE | 51.964695 | -0.26495 | 519302 | 231001 | TL193310 | No |
| SG4 0UF | 51.964695 | -0.26495 | 519302 | 231001 | TL193310 | No |
| SG4 0UG | 51.966492 | -0.26488 | 519302 | 231201 | TL193312 | No |
| SG4 0UH | 51.964695 | -0.26495 | 519302 | 231001 | TL193310 | No |
| SG4 0UJ | 51.964695 | -0.26495 | 519302 | 231001 | TL193310 | No |
| SG4 0UL | 51.966492 | -0.26488 | 519302 | 231201 | TL193312 | No |
| SG4 0UN | 51.9611 | -0.265089 | 519302 | 230601 | TL193306 | No |
| SG4 0UP | 51.962919 | -0.266474 | 519202 | 230801 | TL192308 | No |
| SG4 0UQ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0UR | 51.963796 | -0.264985 | 519302 | 230901 | TL193309 | No |
| SG4 0UT | 51.964695 | -0.26495 | 519302 | 231001 | TL193310 | No |
| SG4 0UX | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0UY | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0UZ | 51.96363 | -0.265908 | 519239 | 230881 | TL192308 | Yes |
| SG4 0WN | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0WP | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0WR | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0WS | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0WT | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0WU | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0WX | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0WY | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0WZ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0XA | 51.947404 | -0.251069 | 520302 | 229101 | TL203291 | No |
| SG4 0XB | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0XE | 51.966009 | -0.26503 | 519293 | 231147 | TL192311 | No |
| SG4 0XF | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0XG | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0XJ | 51.956161 | -0.256418 | 519911 | 230066 | TL199300 | No |
| SG4 0XL | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0XN | 51.956161 | -0.256418 | 519911 | 230066 | TL199300 | No |
| SG4 0XQ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0XR | 51.956161 | -0.256418 | 519911 | 230066 | TL199300 | No |
| SG4 0XS | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0XT | 51.956161 | -0.256418 | 519911 | 230066 | TL199300 | No |
| SG4 0XU | 51.95582 | -0.257086 | 519866 | 230027 | TL198300 | No |
| SG4 0XY | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0YQ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0YR | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0YS | 51.95582 | -0.257086 | 519866 | 230027 | TL198300 | No |
| SG4 0YT | 51.956161 | -0.256418 | 519911 | 230066 | TL199300 | No |
| SG4 0YU | 51.95616 | -0.256403 | 519912 | 230066 | TL199300 | No |
| SG4 0YX | 51.956161 | -0.256418 | 519911 | 230066 | TL199300 | No |
| SG4 0YY | 51.95616 | -0.256403 | 519912 | 230066 | TL199300 | No |
| SG4 0YZ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0ZA | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0ZH | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0ZJ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0ZL | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0ZN | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0ZQ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 0ZR | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7PY | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7TL | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7WA | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7WE | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7WG | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7WJ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7WL | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7WN | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7WQ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7WR | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7WU | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7WW | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7WX | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7WY | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7WZ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7XE | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7XG | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7XQ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7XT | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7XU | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7ZN | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7ZQ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7ZW | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 7ZX | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8BF | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8BH | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8FJ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8FR | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8FT | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8FU | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8GB | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8GE | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8GL | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8GN | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8GP | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8GT | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8QZ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8RQ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8SG | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8SQ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8WB | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8WE | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8WF | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8WG | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8WN | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8WQ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8WR | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8WS | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8WY | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8WZ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8ZJ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8ZN | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8ZQ | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8ZR | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 8ZT | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9AA | 51.947936 | -0.273733 | 518743 | 229123 | TL187291 | Yes |
| SG4 9AB | 51.946187 | -0.274644 | 518685 | 228927 | TL186289 | Yes |
| SG4 9AD | 51.944078 | -0.275555 | 518628 | 228691 | TL186286 | Yes |
| SG4 9AE | 51.943646 | -0.276139 | 518589 | 228642 | TL185286 | Yes |
| SG4 9AF | 51.94452 | -0.274432 | 518704 | 228742 | TL187287 | Yes |
| SG4 9AG | 51.945839 | -0.272373 | 518842 | 228892 | TL188288 | Yes |
| SG4 9AH | 51.944069 | -0.277403 | 518501 | 228687 | TL185286 | Yes |
| SG4 9AJ | 51.942425 | -0.276273 | 518583 | 228506 | TL185285 | Yes |
| SG4 9AL | 51.941801 | -0.276632 | 518560 | 228436 | TL185284 | Yes |
| SG4 9AN | 51.940096 | -0.276275 | 518589 | 228247 | TL185282 | Yes |
| SG4 9AP | 51.939501 | -0.27496 | 518681 | 228183 | TL186281 | Yes |
| SG4 9AQ | 51.94645 | -0.272975 | 518799 | 228959 | TL187289 | Yes |
| SG4 9AR | 51.938041 | -0.27538 | 518656 | 228020 | TL186280 | Yes |
| SG4 9AS | 51.938022 | -0.274056 | 518747 | 228020 | TL187280 | Yes |
| SG4 9AT | 51.936475 | -0.275236 | 518670 | 227846 | TL186278 | Yes |
| SG4 9AU | 51.93593 | -0.274297 | 518736 | 227787 | TL187277 | Yes |
| SG4 9AW | 51.938812 | -0.276426 | 518582 | 228104 | TL185281 | Yes |
| SG4 9AX | 51.936763 | -0.273436 | 518793 | 227881 | TL187278 | Yes |
| SG4 9AY | 51.937133 | -0.272287 | 518871 | 227924 | TL188279 | Yes |
| SG4 9BF | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9BH | 51.936769 | -0.276941 | 518552 | 227876 | TL185278 | Yes |
| SG4 9BJ | 51.937919 | -0.278672 | 518430 | 228001 | TL184280 | Yes |
| SG4 9BL | 51.937989 | -0.276676 | 518567 | 228012 | TL185280 | Yes |
| SG4 9BN | 51.939558 | -0.272703 | 518836 | 228193 | TL188281 | Yes |
| SG4 9BP | 51.944516 | -0.276018 | 518595 | 228739 | TL185287 | Yes |
| SG4 9BQ | 51.935476 | -0.275798 | 518634 | 227734 | TL186277 | Yes |
| SG4 9BS | 51.943955 | -0.276345 | 518574 | 228676 | TL185286 | Yes |
| SG4 9BT | 51.949143 | -0.276335 | 518561 | 229253 | TL185292 | No |
| SG4 9BU | 51.946144 | -0.274151 | 518719 | 228923 | TL187289 | No |
| SG4 9BW | 51.94445 | -0.275133 | 518656 | 228733 | TL186287 | Yes |
| SG4 9BY | 51.946705 | -0.274435 | 518698 | 228985 | TL186289 | No |
| SG4 9BZ | 51.946714 | -0.27442 | 518699 | 228986 | TL186289 | Yes |
| SG4 9DA | 51.942002 | -0.27562 | 518629 | 228460 | TL186284 | Yes |
| SG4 9DB | 51.942687 | -0.275768 | 518617 | 228536 | TL186285 | No |
| SG4 9DD | 51.942114 | -0.274699 | 518692 | 228474 | TL186284 | Yes |
| SG4 9DE | 51.941631 | -0.273045 | 518807 | 228423 | TL188284 | Yes |
| SG4 9DF | 51.939222 | -0.266402 | 519270 | 228166 | TL192281 | No |
| SG4 9DG | 51.940773 | -0.268524 | 519120 | 228335 | TL191283 | Yes |
| SG4 9DH | 51.941131 | -0.273879 | 518751 | 228366 | TL187283 | Yes |
| SG4 9DJ | 51.940936 | -0.272882 | 518820 | 228346 | TL188283 | Yes |
| SG4 9DL | 51.940436 | -0.27248 | 518849 | 228291 | TL188282 | Yes |
| SG4 9DN | 51.940794 | -0.271753 | 518898 | 228332 | TL188283 | Yes |
| SG4 9DP | 51.939716 | -0.271198 | 518939 | 228213 | TL189282 | Yes |
| SG4 9DQ | 51.939948 | -0.267421 | 519198 | 228245 | TL191282 | Yes |
| SG4 9DR | 51.94017 | -0.270279 | 519001 | 228265 | TL190282 | Yes |
| SG4 9DS | 51.940992 | -0.270581 | 518978 | 228356 | TL189283 | Yes |