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 is usually updated once a day at about 10:15 UTC, with data from about 20:30 UTC the previous day. The data used to compute the OSM mean position is updated less frequently, usually about once a week.
District | Sector | Units | Geo. Units | Mapped | % |
---|---|---|---|---|---|
SL1 | 4 | 101 | 94 | 64 | 68.1% |
All units within this sector:
Unit | PQI | First Seen | Last Seen | Street Name | ML | Mapped |
---|---|---|---|---|---|---|
SL1 4AA | 10 | 1 | ||||
SL1 4AG | 10 | 0 | ||||
SL1 4AN | 10 | Galvin Road | 1 | |||
SL1 4AQ | 10 | 0 | ||||
SL1 4AU | 10 | 2015‑10 | 0 | |||
SL1 4AX | 10 | Buckingham Avenue | 1 | |||
SL1 4AY | 10 | 0 | ||||
SL1 4BA | 10 | 2015‑10 | 0 | |||
SL1 4BD | 10 | 0 | ||||
SL1 4BE | 10 | 2 | 0 | |||
SL1 4BF | 10 | 2 | 0 | |||
SL1 4BG | 10 | 0 | ||||
SL1 4BH | 10 | 2 | 0 | |||
SL1 4DE | 10 | 1 | ||||
SL1 4DG | 10 | Ajax Avenue | 2 | 1 | ||
SL1 4DH | 10 | 2015‑10 | 0 | |||
SL1 4DX | 10 | Bath Road | 2 | |||
SL1 4ED | 10 | 0 | ||||
SL1 4EE | 10 | 2021‑04 | 1 | |||
SL1 4EH | 10 | 0 | ||||
SL1 4EL | 10 | 2 | 0 | |||
SL1 4EP | 10 | 1 | ||||
SL1 4EQ | 10 | 1 | ||||
SL1 4ER | 10 | 0 | ||||
SL1 4EU | 10 | 1 | ||||
SL1 4FJ | 10 | 2019‑01 | 160 | 0 | ||
SL1 4FN | 10 | 160 | 0 | |||
SL1 4FR | 10 | 2019‑01 | 160 | 0 | ||
SL1 4FW | 10 | 160 | 0 | |||
SL1 4FX | 10 | 2018‑04 | 160 | 0 | ||
SL1 4GP | 10 | 2013‑07 | 160 | 0 | ||
SL1 4HA | 10 | 1 | ||||
SL1 4HB | 10 | 1 | ||||
SL1 4HE | 10 | 1 | ||||
SL1 4HF | 10 | 1 | ||||
SL1 4HG | 10 | 1 | ||||
SL1 4HL | 10 | 1 | ||||
SL1 4HR | 10 | 1 | ||||
SL1 4HY | 10 | 1 | ||||
SL1 4JA | 10 | 1 | ||||
SL1 4JB | 10 | 1 | ||||
SL1 4JG | 10 | 1 | ||||
SL1 4JU | 10 | Dundee Road | 1 | |||
SL1 4JW | 10 | 0 | ||||
SL1 4JX | 10 | 2019‑01 | 160 | 0 | ||
SL1 4LA | 10 | 1 | ||||
SL1 4LE | 10 | 2013‑07 | 0 | |||
SL1 4LG | 10 | 1 | ||||
SL1 4LH | 10 | Banbury Avenue | 3 | |||
SL1 4LN | 10 | 1 | ||||
SL1 4LP | 10 | Plymouth Road | 2 | |||
SL1 4LR | 10 | 1 | ||||
SL1 4LU | 10 | Buckingham Avenue | 0 | |||
SL1 4LZ | 10 | 1 | ||||
SL1 4NB | 10 | Buckingham Avenue | 3 | |||
SL1 4NH | 10 | 1 | ||||
SL1 4NJ | 10 | 1 | ||||
SL1 4NL | 10 | Buckingham Avenue | 2 | |||
SL1 4NN | 10 | 1 | ||||
SL1 4NX | 10 | 160 | 0 | |||
SL1 4PF | 10 | Buckingham Avenue | 1 | |||
SL1 4PG | 10 | 0 | ||||
SL1 4PH | 10 | 1 | ||||
SL1 4PJ | 10 | 0 | ||||
SL1 4PL | 10 | 1 | ||||
SL1 4PN | 10 | Buckingham Avenue | 2 | |||
SL1 4PY | 10 | 1 | ||||
SL1 4QA | 10 | 0 | ||||
SL1 4QB | 10 | 2016‑10 | 0 | |||
SL1 4QD | 10 | 1 | ||||
SL1 4QQ | 10 | 2013‑07 | 0 | |||
SL1 4QT | 10 | 1 | ||||
SL1 4QU | 10 | 1 | ||||
SL1 4QZ | 10 | Liverpool Road | 4 | |||
SL1 4RA | 10 | 1 | ||||
SL1 4RD | 10 | 1 | ||||
SL1 4RF | 10 | 2 | ||||
SL1 4RH | 10 | 2019‑10 | 1 | |||
SL1 4RP | 10 | 1 | ||||
SL1 4RT | 10 | 2018‑01 | 0 | |||
SL1 4RY | 10 | 1 | ||||
SL1 4SF | 10 | 2013‑07 | 0 | |||
SL1 4SG | 10 | 160 | 0 | |||
SL1 4SH | 10 | 1 | ||||
SL1 4SP | 10 | 1 | ||||
SL1 4SS | 10 | 1 | ||||
SL1 4ST | 10 | 1 | ||||
SL1 4SW | 10 | 2015‑10 | 0 | |||
SL1 4SY | 10 | 1 | ||||
SL1 4SZ | 10 | 1 | ||||
SL1 4TD | 10 | 160 | 0 | |||
SL1 4TJ | 10 | 2 | ||||
SL1 4TN | 10 | 0 | ||||
SL1 4TP | 10 | 0 | ||||
SL1 4TQ | 10 | 0 | ||||
SL1 4TS | 10 | 0 | ||||
SL1 4TT | 10 | 1 | ||||
SL1 4TU | 10 | Edinburgh Avenue | 1 | |||
SL1 4UE | 10 | 1 | ||||
SL1 4UF | 10 | 1 | ||||
SL1 4UG | 10 | 2019‑01 | 160 | 0 | ||
SL1 4UJ | 10 | 160 | 0 | |||
SL1 4UN | 10 | 93 Farnham Road | 2 | |||
SL1 4UT | 10 | 1 | ||||
SL1 4WA | 10 | 160 | 0 | |||
SL1 4WB | 10 | 2019‑01 | 160 | 0 | ||
SL1 4WE | 10 | 160 | 0 | |||
SL1 4WS | 10 | 0 | ||||
SL1 4WU | 10 | 2019‑01 | 160 | 0 | ||
SL1 4WW | 10 | 160 | 0 | |||
SL1 4XA | 10 | 0 | ||||
SL1 4XB | 10 | 1 | ||||
SL1 4XE | 10 | 0 | ||||
SL1 4XH | 10 | 2015‑10 | 0 | |||
SL1 4XL | 10 | Farnham Road | 1 | |||
SL1 4XN | 10 | 0 | ||||
SL1 4XP | 10 | 0 | ||||
SL1 4XQ | 10 | Farnham Road | 1 | |||
SL1 4XS | 10 | 0 | ||||
SL1 4XT | 10 | 0 | ||||
SL1 4XU | 10 | 0 | ||||
SL1 4XX | 10 | 1 | ||||
SL1 4XY | 10 | 0 | ||||
SL1 4XZ | 10 | 0 | ||||
SL1 4YA | 10 | 0 | ||||
SL1 4YF | 10 | 160 | 0 | |||
SL1 4YJ | 10 | 2019‑01 | 160 | 0 | ||
SL1 4YL | 10 | 2019‑01 | 160 | 0 | ||
SL1 4YR | 10 | 2013‑07 | 0 | |||
SL1 4YS | 10 | 2015‑10 | 0 | |||
SL1 4YT | 10 | 2015‑10 | 0 | |||
SL1 4ZA | 10 | 2 | 0 | |||
SL1 4ZL | 10 | 2022‑07 | 160 | 0 |
Units with street mismatches in this sector:
Unit | Mapped | Dominant Street | OSM Object | Tagged Street |
---|---|---|---|---|
SL1 4AA | 1 | w81530291 | ||
SL1 4DE | 1 | w81633586 | ||
SL1 4DX | 2 | Bath␣Road | w547105440 | |
SL1 4EP | 1 | w547105447 | ||
SL1 4EQ | 1 | w225909396 | ||
SL1 4EU | 1 | w547105439 | ||
SL1 4HA | 1 | w225909410 | ||
SL1 4HB | 1 | w81633548 | ||
SL1 4HE | 1 | w547105382 | ||
SL1 4HF | 1 | w547105392 | ||
SL1 4HG | 1 | w547105391 | ||
SL1 4HL | 1 | w225909387 | ||
SL1 4HR | 1 | w393239997 | ||
SL1 4HY | 1 | w81633598 | ||
SL1 4JA | 1 | w393239081 | ||
SL1 4JB | 1 | w393239080 | ||
SL1 4JG | 1 | w393239067 | ||
SL1 4LA | 1 | w393239083 | ||
SL1 4LG | 1 | w184714032 | ||
SL1 4LH | 3 | Banbury␣Avenue | w393241514 | |
SL1 4LH | 3 | Banbury␣Avenue | w712277377 | |
SL1 4LN | 1 | w225909392 | ||
SL1 4LP | 2 | Plymouth␣Road | w393239076 | |
SL1 4LR | 1 | w686507558 | ||
SL1 4LZ | 1 | w81633650 | ||
SL1 4NB | 3 | Buckingham␣Avenue | w459600814 | |
SL1 4NH | 1 | w225909401 | ||
SL1 4NJ | 1 | w547105436 | ||
SL1 4NN | 1 | w686507548 | ||
SL1 4PH | 1 | w225909400 | ||
SL1 4PL | 1 | w459600842 | ||
SL1 4PN | 2 | Buckingham␣Avenue | w459600845 | |
SL1 4PY | 1 | w393239063 | ||
SL1 4QD | 1 | w393248300 | ||
SL1 4QT | 1 | w81633748 | ||
SL1 4QU | 1 | w81633600 | ||
SL1 4RA | 1 | w547105358 | ||
SL1 4RD | 1 | w547105357 | ||
SL1 4RF | 2 | w547105435 | ||
SL1 4RF | 2 | w225909398 | ||
SL1 4RP | 1 | w547105364 | ||
SL1 4RY | 1 | w225909413 | ||
SL1 4SH | 1 | w225909403 | ||
SL1 4SP | 1 | w547105414 | ||
SL1 4SS | 1 | w547105400 | ||
SL1 4ST | 1 | w547105420 | ||
SL1 4SY | 1 | w547105423 | ||
SL1 4SZ | 1 | w459600843 | ||
SL1 4TJ | 2 | w547105406 | ||
SL1 4TJ | 2 | w547105410 | ||
SL1 4TT | 1 | w393248305 | ||
SL1 4UE | 1 | w459600839 | ||
SL1 4UF | 1 | w459600828 | ||
SL1 4UN | 2 | 93␣Farnham␣Road | w686507557 | |
SL1 4UT | 1 | w81633487 | ||
SL1 4XB | 1 | w459600827 | ||
SL1 4XX | 1 | w547105413 |