The circles on the map above are the postcode unit 'centriods' from Code-Point Open, under the Open Government Licence. The 'centriod' is calculated by taking the average of the coordinates of all the delivery points with that postcode, and then snapping that location to the nearest delivery point in that postcode. The data may be freely used in OpenStreetMap, but please make sure you understand it first. Also please only add postcodes to objects representing addressable entities; do not add the postcode centroids as themslves. Suggested source tag code-point_open
The circles are coloured by whether or not there is at least one OSM object with that value in its addr:postcode tag. Click on a point to see the postcode. The numbers in brackets are the number of OSM objects with that postcode.
The centroids are the location of the nearest 'delivery point' to the arithmetic mean of the coordinates of all the delivery points within that unit. Those points with a codepoint PQI greater than 40 are excluded from the map above. (Higher values are typically not geographically accurate. In particular, PQI=50 is used for new postcodes before the location has been determined. The location given for such postcodes seems to be derived from other existing postcodes with similar units letters, which may not be close to the new postcode.)
The pale blue lines from the circles join each Code-Point Open centroid to the mean coordiantes of all the OSM objects with that postcode. (For ways an relations, the centre of the rectangular bounding box is used at the coordinates for the OSM object.) Long lines may indicate missing or incorrect OSM objects for that postcode. In particular, if all the postcodes in a givne unit are correctly mapped, the circle should be located on the nearest delivery point within that postcode to the other end of the blue line.
The OSM data for the number of objects with each unit comes from Taginfo GB. It is usually updated once a day at about 10:15 UTC, with data from about 20:30 UTC the previous day. (Current data is from 1970‑01‑01 00:00:00 Z.) The data used to compute the OSM mean position comes from the Overpass API and is updated less frequently, usually about once a week. (Current data is from 2024‑03‑23 18:50:30 Z.)
District | Sector | Units | Geo. Units | Mapped | % |
---|---|---|---|---|---|
AL3 | 4 | 186 | 185 | 120 | 64.9% |
All units within this sector:
Unit | PQI | First Seen | Last Seen | Street Name | ML | Mapped |
---|---|---|---|---|---|---|
AL3 4AA | 10 | 0 | ||||
AL3 4AB | 10 | 0 | ||||
AL3 4AD | 10 | 0 | ||||
AL3 4AE | 10 | 1 | ||||
AL3 4AF | 10 | 1 | ||||
AL3 4AH | 10 | 0 | ||||
AL3 4AJ | 10 | The Ramparts | 4 | |||
AL3 4AL | 10 | 0 | ||||
AL3 4AP | 10 | King Harry Lane | 2 | |||
AL3 4AR | 10 | 1 | ||||
AL3 4AS | 10 | 0 | ||||
AL3 4AT | 10 | 1 | ||||
AL3 4AU | 10 | King Harry Lane | 3 | |||
AL3 4AW | 10 | King Harry Lane | 2 | |||
AL3 4AX | 10 | 0 | ||||
AL3 4AY | 10 | 0 | ||||
AL3 4AZ | 10 | 0 | ||||
AL3 4BA | 10 | 0 | ||||
AL3 4BB | 10 | 0 | ||||
AL3 4BD | 10 | 0 | ||||
AL3 4BG | 10 | 0 | ||||
AL3 4BH | 10 | Abbey Avenue | 5 | |||
AL3 4BJ | 10 | 0 | ||||
AL3 4BL | 10 | King Harry Lane | 2 | |||
AL3 4BN | 10 | 1 | ||||
AL3 4BQ | 10 | 0 | ||||
AL3 4BY | 10 | 1 | ||||
AL3 4BZ | 10 | 0 | ||||
AL3 4DA | 10 | Verulam Road | 4 | |||
AL3 4DD | 10 | Verulam Road | 1 | |||
AL3 4DE | 10 | Verulam Road | 2 | |||
AL3 4DG | 10 | 1 | ||||
AL3 4DH | 10 | Verulam Road | 2 | |||
AL3 4DJ | 10 | Verulam Road | 1 | |||
AL3 4DL | 10 | Verulam Road | 2 | |||
AL3 4DN | 10 | 1 | ||||
AL3 4DP | 10 | Verulam Road | 2 | |||
AL3 4DQ | 10 | 1 | ||||
AL3 4DR | 10 | Verulam Road | 2 | |||
AL3 4DW | 10 | Verulam Road | 2 | |||
AL3 4DZ | 10 | 0 | ||||
AL3 4EA | 10 | 1 | ||||
AL3 4EB | 10 | Heritage Close | 5 | |||
AL3 4ED | 10 | High Street | 9 | |||
AL3 4EH | 10 | High Street | 6 | |||
AL3 4EJ | 10 | 2015‑10 | 0 | |||
AL3 4EL | 10 | High Street | 7 | |||
AL3 4EP | 10 | 0 | ||||
AL3 4ER | 10 | George Street | 3 | |||
AL3 4ES | 10 | George Street | 3 | |||
AL3 4ET | 10 | 1 | ||||
AL3 4EW | 10 | Waxhouse Gate | 3 | |||
AL3 4EZ | 10 | 1 | ||||
AL3 4FB | 10 | 2023‑10 | 0 | |||
AL3 4FD | 10 | 0 | ||||
AL3 4GB | 10 | 1 | ||||
AL3 4GD | 10 | 1 | ||||
AL3 4GE | 10 | 1 | ||||
AL3 4GF | 10 | 0 | ||||
AL3 4GG | 10 | 1 | ||||
AL3 4GH | 10 | 1 | ||||
AL3 4GJ | 10 | 1 | ||||
AL3 4GL | 10 | 1 | ||||
AL3 4GN | 10 | 1 | ||||
AL3 4HA | 10 | 1 | ||||
AL3 4HB | 10 | Abbey Gateway | 2 | |||
AL3 4HD | 10 | 1 | ||||
AL3 4HE | 10 | Abbey Mill Lane | 2 | |||
AL3 4HG | 10 | 1 | ||||
AL3 4HH | 10 | 1 | ||||
AL3 4HJ | 10 | 1 | ||||
AL3 4HL | 10 | 1 | ||||
AL3 4HN | 10 | 1 | ||||
AL3 4HR | 10 | 133 | 0 | |||
AL3 4HW | 10 | 0 | ||||
AL3 4HX | 10 | 0 | ||||
AL3 4HY | 10 | 0 | ||||
AL3 4HZ | 10 | King Harry Lane | 2 | |||
AL3 4JA | 10 | 0 | ||||
AL3 4JB | 10 | 0 | ||||
AL3 4JD | 10 | 0 | ||||
AL3 4JE | 10 | 0 | ||||
AL3 4JF | 10 | 0 | ||||
AL3 4JG | 10 | 0 | ||||
AL3 4JH | 10 | 0 | ||||
AL3 4JJ | 10 | 0 | ||||
AL3 4JL | 10 | 0 | ||||
AL3 4JN | 10 | 0 | ||||
AL3 4JP | 10 | 0 | ||||
AL3 4JQ | 10 | 0 | ||||
AL3 4JR | 10 | 0 | ||||
AL3 4JS | 10 | 0 | ||||
AL3 4JT | 10 | 0 | ||||
AL3 4JU | 10 | 0 | ||||
AL3 4JW | 10 | 0 | ||||
AL3 4JX | 10 | 0 | ||||
AL3 4JY | 10 | 0 | ||||
AL3 4JZ | 10 | Ermine Close | 2 | |||
AL3 4LA | 10 | 1 | ||||
AL3 4LD | 10 | 1 | ||||
AL3 4LP | 10 | 0 | ||||
AL3 4LR | 10 | 0 | ||||
AL3 4LS | 10 | 0 | ||||
AL3 4LT | 10 | 0 | ||||
AL3 4LU | 10 | 0 | ||||
AL3 4LW | 10 | 0 | ||||
AL3 4LX | 10 | 0 | ||||
AL3 4LY | 10 | 0 | ||||
AL3 4LZ | 10 | 0 | ||||
AL3 4NA | 10 | 0 | ||||
AL3 4NB | 10 | 0 | ||||
AL3 4ND | 10 | 0 | ||||
AL3 4NE | 10 | 0 | ||||
AL3 4NF | 10 | 0 | ||||
AL3 4NG | 10 | 0 | ||||
AL3 4NH | 10 | 0 | ||||
AL3 4NJ | 10 | 0 | ||||
AL3 4NQ | 10 | 0 | ||||
AL3 4NR | 10 | 2022‑06 | 0 | |||
AL3 4PA | 10 | 1 | ||||
AL3 4PE | 10 | Bowes Lyon Mews | 1 | |||
AL3 4PF | 10 | 1 | ||||
AL3 4PH | 10 | 1 | ||||
AL3 4PJ | 10 | 2 | ||||
AL3 4PN | 10 | 1 | ||||
AL3 4PQ | 10 | 1 | ||||
AL3 4PS | 10 | 1 | ||||
AL3 4PT | 10 | Lower Dagnall Street | 2 | |||
AL3 4PU | 10 | 1 | ||||
AL3 4PW | 10 | 1 | ||||
AL3 4PX | 10 | 1 | ||||
AL3 4PY | 10 | 1 | ||||
AL3 4PZ | 10 | 2 | ||||
AL3 4QA | 10 | 2 | ||||
AL3 4QB | 10 | 1 | ||||
AL3 4QD | 10 | 1 | ||||
AL3 4QE | 10 | Lower Dagnall Street | 1 | |||
AL3 4QF | 10 | 1 | ||||
AL3 4QG | 10 | New England Street | 1 | |||
AL3 4QH | 10 | 1 | ||||
AL3 4QJ | 10 | 0 | ||||
AL3 4QL | 10 | 1 | ||||
AL3 4QN | 10 | 1 | ||||
AL3 4QP | 10 | 1 | ||||
AL3 4QQ | 10 | 1 | ||||
AL3 4QR | 10 | 1 | ||||
AL3 4QS | 10 | 0 | ||||
AL3 4QT | 10 | 1 | ||||
AL3 4QU | 10 | 0 | ||||
AL3 4QW | 10 | 1 | ||||
AL3 4QY | 10 | 0 | ||||
AL3 4RA | 10 | Portland Street | 2 | |||
AL3 4RB | 10 | 2 | ||||
AL3 4RD | 10 | 2015‑10 | 0 | |||
AL3 4RF | 10 | 1 | ||||
AL3 4RQ | 10 | 1 | ||||
AL3 4RR | 10 | 0 | ||||
AL3 4RS | 10 | 1 | ||||
AL3 4RT | 10 | 1 | ||||
AL3 4RU | 10 | 1 | ||||
AL3 4RX | 10 | Fishpool Street | 2 | |||
AL3 4RY | 10 | 1 | ||||
AL3 4RZ | 10 | 1 | ||||
AL3 4SA | 10 | 1 | ||||
AL3 4SB | 10 | 1 | ||||
AL3 4SD | 10 | 1 | ||||
AL3 4SE | 10 | 1 | ||||
AL3 4SF | 10 | 1 | ||||
AL3 4SG | 10 | 1 | ||||
AL3 4SH | 10 | St Michael's Street | 2 | |||
AL3 4SJ | 10 | St Michael's Street | 2 | |||
AL3 4SL | 10 | 1 | ||||
AL3 4SN | 10 | St Michael's Street | 2 | |||
AL3 4SP | 10 | 1 | ||||
AL3 4SQ | 10 | 1 | ||||
AL3 4SS | 10 | 1 | ||||
AL3 4ST | 10 | 1 | ||||
AL3 4SU | 10 | 1 | ||||
AL3 4SW | 10 | St Michael's Street | 2 | |||
AL3 4SX | 10 | 1 | ||||
AL3 4SY | 10 | 1 | ||||
AL3 4SZ | 10 | 1 | ||||
AL3 4TA | 10 | 1 | ||||
AL3 4TB | 10 | 1 | ||||
AL3 4TF | 10 | 1 | ||||
AL3 4TG | 10 | 1 | ||||
AL3 4TH | 10 | 0 | ||||
AL3 4TL | 10 | 2 | ||||
AL3 4TN | 10 | 3 | ||||
AL3 4TQ | 10 | 1 | ||||
AL3 4TZ | 10 | 1 | ||||
AL3 4WD | 10 | 2015‑10 | 0 | |||
AL3 4WJ | 10 | 2021‑04 | 133 | 0 | ||
AL3 4XJ | 10 | 2013‑07 | 0 | |||
AL3 4XL | 10 | 2017‑04 | 133 | 0 | ||
AL3 4XN | 10 | 0 | ||||
AL3 4YN | 10 | 0 | ||||
AL3 4ZF | 10 | 2015‑10 | 0 |
Units with street mismatches in this sector:
Unit | Mapped | Dominant Street | OSM Object | Tagged Street |
---|---|---|---|---|
AL3 4AE | 1 | w382097107 | ||
AL3 4AF | 1 | w169566177 | ||
AL3 4AR | 1 | w169568266 | ||
AL3 4AT | 1 | w169568290 | ||
AL3 4AW | 2 | King␣Harry␣Lane | w165635277 | |
AL3 4BL | 2 | King␣Harry␣Lane | w165633631 | |
AL3 4BN | 1 | w165633922 | ||
AL3 4BY | 1 | w165948102 | ||
AL3 4DE | 2 | Verulam␣Road | w166123092 | |
AL3 4DG | 1 | w166123097 | ||
AL3 4DH | 2 | Verulam␣Road | w166381273 | |
AL3 4DL | 2 | Verulam␣Road | w166507144 | |
AL3 4DN | 1 | w166706034 | ||
AL3 4DQ | 1 | w166123234 | ||
AL3 4DR | 2 | Verulam␣Road | w166814286 | |
AL3 4DW | 2 | Verulam␣Road | w166706817 | |
AL3 4EA | 1 | w166120974 | ||
AL3 4ER | 3 | George␣Street | w164094875 | |
AL3 4ES | 3 | George␣Street | r2189401 | |
AL3 4ET | 1 | w165754751 | ||
AL3 4EW | 3 | Waxhouse␣Gate | w164100415 | |
AL3 4EZ | 1 | w165753689 | ||
AL3 4GB | 1 | w186756849 | ||
AL3 4GD | 1 | n6349270836 | ||
AL3 4GE | 1 | n6349270831 | ||
AL3 4GG | 1 | w227521165 | ||
AL3 4GH | 1 | w186756850 | ||
AL3 4GJ | 1 | n6349270837 | ||
AL3 4GL | 1 | w227521169 | ||
AL3 4GN | 1 | w227521170 | ||
AL3 4HA | 1 | w165811386 | ||
AL3 4HB | 2 | Abbey␣Gateway | w145792837 | |
AL3 4HD | 1 | w165810180 | ||
AL3 4HE | 2 | Abbey␣Mill␣Lane | w165811399 | |
AL3 4HG | 1 | w165812147 | ||
AL3 4HH | 1 | w166120966 | ||
AL3 4HJ | 1 | w165812152 | ||
AL3 4HL | 1 | w165811398 | ||
AL3 4HN | 1 | w165812932 | ||
AL3 4HZ | 2 | King␣Harry␣Lane | w203172595 | |
AL3 4JZ | 2 | Ermine␣Close | w34319798 | Ermine␣Close,␣Mayne␣Avenue |
AL3 4LA | 1 | w160173251 | ||
AL3 4LD | 1 | w165633924 | ||
AL3 4PA | 1 | w166123107 | ||
AL3 4PF | 1 | w166120970 | ||
AL3 4PH | 1 | w166120956 | ||
AL3 4PJ | 2 | w166122054 | ||
AL3 4PJ | 2 | n1776035387 | ||
AL3 4PN | 1 | w166381292 | ||
AL3 4PQ | 1 | w166120950 | ||
AL3 4PS | 1 | w166122057 | ||
AL3 4PT | 2 | Lower␣Dagnall␣Street | w166122073 | |
AL3 4PU | 1 | w166381291 | ||
AL3 4PW | 1 | w166381290 | ||
AL3 4PX | 1 | w166122071 | ||
AL3 4PY | 1 | w166506308 | ||
AL3 4PZ | 2 | n1779486542 | ||
AL3 4PZ | 2 | w166506311 | ||
AL3 4QA | 2 | n1779486435 | ||
AL3 4QA | 2 | w166506302 | ||
AL3 4QB | 1 | w166122053 | ||
AL3 4QD | 1 | w166507311 | ||
AL3 4QF | 1 | w166506326 | ||
AL3 4QH | 1 | w166619431 | ||
AL3 4QL | 1 | w166621426 | ||
AL3 4QN | 1 | w166619409 | ||
AL3 4QP | 1 | w166619416 | ||
AL3 4QQ | 1 | w166507143 | ||
AL3 4QR | 1 | w166621417 | ||
AL3 4QT | 1 | w166705316 | ||
AL3 4QW | 1 | w166619399 | ||
AL3 4RA | 2 | Portland␣Street | w166706037 | |
AL3 4RB | 2 | n1782078054 | ||
AL3 4RB | 2 | w166710439 | ||
AL3 4RF | 1 | w165813155 | ||
AL3 4RQ | 1 | w166507582 | ||
AL3 4RS | 1 | w165753692 | ||
AL3 4RT | 1 | w166118778 | ||
AL3 4RU | 1 | w165813936 | ||
AL3 4RX | 2 | Fishpool␣Street | w166118783 | |
AL3 4RY | 1 | w165832887 | ||
AL3 4RZ | 1 | w166118811 | ||
AL3 4SA | 1 | w678014052 | ||
AL3 4SB | 1 | w165948094 | ||
AL3 4SD | 1 | w165832890 | ||
AL3 4SE | 1 | w165948095 | ||
AL3 4SF | 1 | w165947257 | ||
AL3 4SG | 1 | w165836396 | ||
AL3 4SH | 2 | St␣Michael's␣Street | w165836397 | |
AL3 4SL | 1 | w165944676 | ||
AL3 4SP | 1 | w165944697 | ||
AL3 4SQ | 1 | w165947271 | ||
AL3 4SS | 1 | w166815801 | ||
AL3 4ST | 1 | w166813198 | ||
AL3 4SU | 1 | w166849561 | ||
AL3 4SW | 2 | St␣Michael's␣Street | w165837821 | |
AL3 4SX | 1 | w166814287 | ||
AL3 4SY | 1 | w166815813 | ||
AL3 4SZ | 1 | w166813189 | ||
AL3 4TA | 1 | w166814290 | ||
AL3 4TB | 1 | w166710454 | ||
AL3 4TF | 1 | w166706822 | ||
AL3 4TG | 1 | w166813206 | ||
AL3 4TL | 2 | w166815804 | ||
AL3 4TL | 2 | n1782737113 | ||
AL3 4TN | 3 | w166852336 | ||
AL3 4TN | 3 | n1782760595 | ||
AL3 4TN | 3 | n1782760658 | ||
AL3 4TQ | 1 | w166813200 | ||
AL3 4TZ | 1 | w166706841 |