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OSM Postcode Mapping for CH49 3 Postal Sector

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
Data derived from OpenStreetMap data, © OpenStreetMap Contributors, licensed under Open Data Commons Open Database License (ODbL). Data derived in part using Code-Point Open under the Open Government Licence v3; Contains OS data © Crown copyright and database right 2020; Contains Royal Mail data © Royal Mail copyright and Database right 2016; Contains National Statistics data © Crown copyright and database right 2020.