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OSM Postcode Mapping for W1C 1 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 %
W1C 1 62 52 9 17.3%

All units within this sector:

Unit Street Name PQI ML Mapped
W1C 1AA 10 0
W1C 1AB 10 0
W1C 1AP Oxford Street 10 1
W1C 1AS 10 0
W1C 1AT 10 2 0
W1C 1AX 10 0
W1C 1AY 10 0
W1C 1AZ 10 0
W1C 1BA 10 0
W1C 1BB 10 2 0
W1C 1BD 10 2 0
W1C 1BE 10 0
W1C 1BF 10 0
W1C 1BG 10 0
W1C 1BQ 10 0
W1C 1BY 10 2 0
W1C 1DA 10 4 0
W1C 1DB 10 3 0
W1C 1DD 10 4 0
W1C 1DE Oxford Street 10 4 2
W1C 1DH 10 0
W1C 1DJ 10 0
W1C 1DL Oxford Street 10 0
W1C 1DN 10 0
W1C 1DP 10 0
W1C 1DR 10 0
W1C 1DS 10 2 0
W1C 1DT 10 2 0
W1C 1DU 10 0
W1C 1DW 10 0
W1C 1DX Oxford Street 10 2
W1C 1ES 10 0
W1C 1HF 10 0
W1C 1HG 10 6 0
W1C 1JA 10 0
W1C 1JB 10 0
W1C 1JD 10 2 0
W1C 1JE 10 2 0
W1C 1JF 10 0
W1C 1JG 10 0
W1C 1JH Oxford Street 10 2 1
W1C 1JJ 10 0
W1C 1JL 10 0
W1C 1JN Oxford Street 10 1
W1C 1JP Oxford Street 10 2 1
W1C 1JR Oxford Street 10 2 1
W1C 1JS 10 0
W1C 1JT 10 3 0
W1C 1JU 10 3 0
W1C 1JW 10 0
W1C 1JX Oxford Street 10 3 1
W1C 1JY 10 2 0
W1C 1LA 10 0
W1C 1LB 10 2 0
W1C 1LD 10 2 0
W1C 1LE 10 6 0
W1C 1LF 10 6 0
W1C 1LG 10 6 0
W1C 1LL 10 10 0
W1C 1LN 10 10 0
W1C 1LP 10 10 0
W1C 1LQ 10 6 0
W1C 1LR 10 10 0
W1C 1LS 10 10 0
W1C 1LT 10 3 0
W1C 1LU 10 3 0
W1C 1LW 10 10 0
W1C 1LX 10 0
W1C 1LY 10 3 0
W1C 1LZ 10 3 0
W1C 1NA 10 0
W1C 1NB Oxford Street 10 1
W1C 1NX 10 10 0
W1C 1YZ 10 760 0

Units with street mismatches in this sector:

Unit Mapped Dominant Street OSM Object Tagged Street
W1C 1DX 2 Oxford␣Street n6051260486
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.