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 | % |
---|---|---|---|---|---|
CH49 | 3 | 87 | 86 | 6 | 7.0% |
All units within this sector:
Unit | PQI | First Seen | Last Seen | Street Name | ML | Mapped |
---|---|---|---|---|---|---|
CH49 3AA | 10 | 0 | ||||
CH49 3AB | 10 | 0 | ||||
CH49 3AD | 10 | 0 | ||||
CH49 3AE | 10 | 0 | ||||
CH49 3AF | 10 | 0 | ||||
CH49 3AG | 10 | 0 | ||||
CH49 3AH | 10 | 0 | ||||
CH49 3AJ | 10 | 0 | ||||
CH49 3AL | 10 | 0 | ||||
CH49 3AN | 10 | 0 | ||||
CH49 3AP | 10 | 0 | ||||
CH49 3AQ | 10 | 0 | ||||
CH49 3AR | 10 | Mill Lane | 1 | |||
CH49 3AS | 10 | 0 | ||||
CH49 3AT | 10 | 0 | ||||
CH49 3AW | 10 | 0 | ||||
CH49 3BG | 10 | 0 | ||||
CH49 3GN | 10 | 0 | ||||
CH49 3GP | 10 | 0 | ||||
CH49 3GQ | 10 | 0 | ||||
CH49 3GR | 10 | 0 | ||||
CH49 3GS | 10 | 2 | ||||
CH49 3GT | 10 | 0 | ||||
CH49 3GU | 10 | 0 | ||||
CH49 3GW | 10 | 0 | ||||
CH49 3GX | 10 | 0 | ||||
CH49 3GZ | 10 | 0 | ||||
CH49 3LZ | 10 | 0 | ||||
CH49 3NA | 10 | 0 | ||||
CH49 3NB | 10 | 0 | ||||
CH49 3ND | 10 | 0 | ||||
CH49 3NE | 10 | 0 | ||||
CH49 3NF | 10 | Greasby Road | 2 | |||
CH49 3NG | 10 | Greasby Road | 1 | |||
CH49 3NH | 10 | 0 | ||||
CH49 3NJ | 10 | 0 | ||||
CH49 3NL | 10 | 0 | ||||
CH49 3NN | 10 | 0 | ||||
CH49 3NP | 10 | 0 | ||||
CH49 3NQ | 10 | 1 | ||||
CH49 3NR | 10 | 0 | ||||
CH49 3NS | 10 | 0 | ||||
CH49 3NT | 10 | 0 | ||||
CH49 3NU | 10 | 0 | ||||
CH49 3NW | 10 | 0 | ||||
CH49 3NX | 10 | Barker Lane | 1 | |||
CH49 3NY | 10 | 0 | ||||
CH49 3NZ | 10 | 0 | ||||
CH49 3PA | 10 | 0 | ||||
CH49 3PB | 10 | 0 | ||||
CH49 3PD | 10 | 0 | ||||
CH49 3PE | 10 | 0 | ||||
CH49 3PF | 10 | 0 | ||||
CH49 3PG | 10 | 0 | ||||
CH49 3PH | 10 | 0 | ||||
CH49 3PJ | 10 | 0 | ||||
CH49 3PL | 10 | 0 | ||||
CH49 3PN | 10 | 0 | ||||
CH49 3PP | 10 | 0 | ||||
CH49 3PQ | 10 | 0 | ||||
CH49 3PR | 10 | 0 | ||||
CH49 3PS | 10 | 0 | ||||
CH49 3PT | 10 | 0 | ||||
CH49 3PU | 10 | 0 | ||||
CH49 3PW | 10 | 0 | ||||
CH49 3PX | 10 | 0 | ||||
CH49 3PY | 10 | 0 | ||||
CH49 3PZ | 10 | 0 | ||||
CH49 3QA | 10 | 0 | ||||
CH49 3QB | 10 | 0 | ||||
CH49 3QE | 10 | 0 | ||||
CH49 3QF | 10 | 0 | ||||
CH49 3QG | 10 | 0 | ||||
CH49 3QH | 10 | 0 | ||||
CH49 3QJ | 10 | 0 | ||||
CH49 3QL | 10 | 0 | ||||
CH49 3QN | 10 | 0 | ||||
CH49 3QP | 10 | 0 | ||||
CH49 3QQ | 10 | 0 | ||||
CH49 3QR | 10 | 0 | ||||
CH49 3QS | 10 | 0 | ||||
CH49 3QT | 10 | 0 | ||||
CH49 3QU | 10 | 0 | ||||
CH49 3QW | 10 | 0 | ||||
CH49 3QX | 10 | 0 | ||||
CH49 3QY | 10 | 0 | ||||
CH49 3QZ | 10 | 0 | ||||
CH49 3WB | 10 | 2013‑07 | 0 | |||
CH49 3WE | 10 | 0 | ||||
CH49 3YD | 10 | 6 | 0 |
Units with street mismatches in this sector:
Unit | Mapped | Dominant Street | OSM Object | Tagged Street |
---|---|---|---|---|
CH49 3GS | 2 | w248661661 | ||
CH49 3GS | 2 | w248661870 | ||
CH49 3NQ | 1 | n291177845 |