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OSM Postcode Mapping for SN5 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 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 %
SN5 3 29 29 2 6.9%

All units within this sector:

Unit PQI First Seen Last Seen Street Name ML Mapped
SN5 3LD 10 0
SN5 3LE 10 0
SN5 3LH 10 0
SN5 3LP 10 0
SN5 3LR 10 The Butts 1
SN5 3LS 10 0
SN5 3LT 10 0
SN5 3LU 10 The Street 1
SN5 3LW 10 0
SN5 3LX 10 0
SN5 3LY 10 0
SN5 3LZ 10 0
SN5 3NA 10 0
SN5 3NB 10 0
SN5 3ND 10 0
SN5 3NE 10 0
SN5 3NF 10 0
SN5 3NG 10 0
SN5 3NH 10 0
SN5 3NJ 10 0
SN5 3NQ 10 0
SN5 3NR 10 0
SN5 3NT 10 0
SN5 3NY 10 0
SN5 3PA 10 0
SN5 3PN 10 0
SN5 3PP 10 0
SN5 3WA 10 2019‑01 23 0
SN5 3WS 10 0
SN5 3XW 10 0

Units with street mismatches in this sector:

No mismatches found in this sector.

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.