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 | % |
---|---|---|---|---|---|
WD18 | 9 | 45 | 43 | 7 | 16.3% |
All units within this sector:
Unit | PQI | First Seen | Last Seen | Street Name | ML | Mapped |
---|---|---|---|---|---|---|
WD18 9AA | 10 | 0 | ||||
WD18 9AB | 10 | 0 | ||||
WD18 9AD | 10 | 0 | ||||
WD18 9AE | 10 | 0 | ||||
WD18 9AF | 10 | 0 | ||||
WD18 9AG | 10 | 0 | ||||
WD18 9BL | 10 | Tolpits Lane | 1 | |||
WD18 9DA | 10 | Dwight Road | 0 | |||
WD18 9EB | 10 | 2013‑07 | 0 | |||
WD18 9ER | 10 | 0 | ||||
WD18 9ET | 10 | 0 | ||||
WD18 9EU | 10 | 0 | ||||
WD18 9EY | 10 | 0 | ||||
WD18 9EZ | 10 | 0 | ||||
WD18 9GD | 10 | 2019‑01 | 140 | 0 | ||
WD18 9HG | 10 | 0 | ||||
WD18 9JE | 10 | 0 | ||||
WD18 9NA | 10 | 0 | ||||
WD18 9PU | 10 | 0 | ||||
WD18 9PX | 10 | 0 | ||||
WD18 9QA | 10 | 0 | ||||
WD18 9QD | 10 | Chaffinch Lane | 1 | |||
WD18 9QG | 10 | 0 | ||||
WD18 9QN | 10 | 0 | ||||
WD18 9QP | 10 | Tolpits Lane | 1 | |||
WD18 9QQ | 10 | 0 | ||||
WD18 9QR | 10 | 0 | ||||
WD18 9RD | 10 | 2013‑07 | 0 | |||
WD18 9RE | 10 | 0 | ||||
WD18 9RF | 10 | 0 | ||||
WD18 9RG | 10 | 2013‑07 | 0 | |||
WD18 9RH | 10 | 2013‑07 | 0 | |||
WD18 9RN | 10 | Tolpits Lane | 3 | |||
WD18 9RS | 10 | 0 | ||||
WD18 9RU | 10 | Olds Close | 0 | |||
WD18 9RX | 10 | 2018‑01 | 0 | |||
WD18 9RZ | 10 | 2015‑10 | 0 | |||
WD18 9SB | 10 | Tolpits Lane | 1 | |||
WD18 9SP | 10 | Tolpits Lane | 2 | |||
WD18 9SR | 10 | 1 | ||||
WD18 9SS | 10 | 0 | ||||
WD18 9SW | 10 | 0 | ||||
WD18 9TB | 10 | 0 | ||||
WD18 9TD | 10 | 0 | ||||
WD18 9TL | 10 | 0 | ||||
WD18 9TS | 10 | 0 | ||||
WD18 9TT | 10 | 140 | 0 | |||
WD18 9UD | 10 | 0 | ||||
WD18 9UH | 10 | 2018‑01 | 0 | |||
WD18 9UL | 10 | 0 | ||||
WD18 9UN | 10 | 0 | ||||
WD18 9UP | 10 | 0 | ||||
WD18 9WW | 10 | 140 | 0 | |||
WD18 9WZ | 10 | 2013‑07 | 0 | |||
WD18 9XD | 10 | 0 | ||||
WD18 9XG | 10 | 0 | ||||
WD18 9XL | 10 | 2019‑12 | Dwight Road | 1 | ||
WD18 9XN | 10 | 2018‑07 | 0 | |||
WD18 9XT | 10 | 0 | ||||
WD18 9YB | 10 | 2013‑07 | 0 | |||
WD18 9YD | 10 | 2013‑07 | 0 | |||
WD18 9ZH | 10 | 2019‑01 | 140 | 0 | ||
WD18 9ZR | 10 | 2013‑07 | 0 |
Units with street mismatches in this sector:
Unit | Mapped | Dominant Street | OSM Object | Tagged Street |
---|---|---|---|---|
WD18 9SR | 1 | n988176113 |