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OSM Postcode Mapping for SW1P 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 %
SW1P 3 98 92 24 26.1%

All units within this sector:

Unit PQI First Seen Last Seen Street Name ML Mapped
SW1P 3AA 10 Great George Street 2 1
SW1P 3AB 10 2013‑07 0
SW1P 3AD 10 Great George Street 1
SW1P 3AE 10 Great George Street 4
SW1P 3AF 10 2 0
SW1P 3AL 10 2 0
SW1P 3AN 50 2 0
SW1P 3AP 10 2015‑10 0
SW1P 3AQ 10 0
SW1P 3AT 10 Storey's Gate 1
SW1P 3AY 10 0
SW1P 3AZ 10 Great Smith Street 7 2
SW1P 3BD 10 Parliament Square 2 1
SW1P 3BH 10 2021‑12 285 0
SW1P 3BJ 10 2015‑10 0
SW1P 3BL 10 Great Smith Street 7 1
SW1P 3BN 10 Great Smith Street 7 1
SW1P 3BP 10 0
SW1P 3BQ 10 0
SW1P 3BT 10 Great Smith Street 1
SW1P 3BU 10 Great Smith Street 1
SW1P 3DJ 10 Great Smith Street 7 1
SW1P 3DN 10 7 0
SW1P 3DP 10 Marsham Street 3
SW1P 3DQ 10 0
SW1P 3DR 10 Marsham Street 2 1
SW1P 3DS 10 2 0
SW1P 3DW 10 0
SW1P 3EE 10 Broad Sanctuary 1
SW1P 3EP 10 0
SW1P 3ER 10 2 0
SW1P 3EU 10 Smith Square 2 1
SW1P 3GE 10 2018‑10 0
SW1P 3HA 10 0
SW1P 3HB 10 0
SW1P 3HE 10 0
SW1P 3HF 10 0
SW1P 3HL 10 0
SW1P 3HN 10 0
SW1P 3HP 10 0
SW1P 3HQ 10 2 0
SW1P 3HS 10 0
SW1P 3HT 10 0
SW1P 3HX 10 2 0
SW1P 3HZ 10 0
SW1P 3JA 10 2 0
SW1P 3JH 10 0
SW1P 3JJ 10 2 0
SW1P 3JQ 10 2 0
SW1P 3JR 10 2 0
SW1P 3JS 10 0
SW1P 3JT 10 0
SW1P 3JU 10 2 0
SW1P 3JX 10 0
SW1P 3JY 10 0
SW1P 3LA 10 0
SW1P 3LB 10 0
SW1P 3LD 10 0
SW1P 3LL 10 0
SW1P 3LN 10 0
SW1P 3LR 10 0
SW1P 3LT 10 0
SW1P 3LW 10 0
SW1P 3LX 10 2013‑07 2 0
SW1P 3LZ 10 0
SW1P 3NB 10 0
SW1P 3NE 10 0
SW1P 3NG 10 0
SW1P 3NL 10 0
SW1P 3NP 10 0
SW1P 3NQ 10 0
SW1P 3NR 10 0
SW1P 3NY 10 Dean's Yard 1
SW1P 3NZ 10 7 0
SW1P 3PA 10 Dean's Yard 2
SW1P 3PB 10 0
SW1P 3PD 10 0
SW1P 3PF 10 1
SW1P 3PG 10 0
SW1P 3PH 10 0
SW1P 3PJ 10 0
SW1P 3PL 10 0
SW1P 3PP 10 2017‑01 0
SW1P 3PQ 10 0
SW1P 3PS 10 Great Smith Street 7 2
SW1P 3QA 10 0
SW1P 3QB 10 0
SW1P 3QE 10 0
SW1P 3QH 10 0
SW1P 3QL 10 0
SW1P 3QN 10 2013‑07 0
SW1P 3QS 10 2013‑07 2 0
SW1P 3QX 10 0
SW1P 3QY 10 Tufton Street 1
SW1P 3QZ 10 Tufton Street 1
SW1P 3RA 10 0
SW1P 3RB 10 Tufton Street 2
SW1P 3RD 10 0
SW1P 3RE 10 Romney Street 0
SW1P 3RF 10 Romney Street 1
SW1P 3RT 10 0
SW1P 3RX 10 Great College Street 1
SW1P 3SA 10 2017‑10 0
SW1P 3SE 10 0
SW1P 3SF 10 2 0
SW1P 3SH 10 0
SW1P 3SJ 10 2015‑10 2 0
SW1P 3WA 10 4 0
SW1P 3WB 10 2019‑01 0
SW1P 3WH 10 2019‑01 0
SW1P 3WJ 10 2019‑01 0
SW1P 3WP 10 285 0
SW1P 3WQ 10 2020‑07 285 0
SW1P 3WR 10 2018‑10 0
SW1P 3WS 10 2020‑07 285 0
SW1P 3WT 10 285 0
SW1P 3XA 10 285 0
SW1P 3XB 10 2013‑07 0
SW1P 3XE 10 2019‑01 0
SW1P 3XF 10 4 0
SW1P 3XG 10 2019‑01 0
SW1P 3XH 10 2019‑01 0
SW1P 3XJ 10 2019‑01 0
SW1P 3XN 10 2019‑01 0
SW1P 3XP 10 2019‑01 0
SW1P 3XQ 10 285 0
SW1P 3XR 10 2016‑10 2 0
SW1P 3XT 10 2015‑10 0
SW1P 3YB 10 2015‑10 0
SW1P 3ZB 10 2013‑07 0
SW1P 3ZS 10 2013‑07 0
SW1P 3ZU 10 4 0

Units with street mismatches in this sector:

Unit Mapped Dominant Street OSM Object Tagged Street
SW1P 3AZ 2 Great␣Smith␣Street w359221823
SW1P 3AZ 2 Great␣Smith␣Street w359221826
SW1P 3BN 1 Great␣Smith␣Street w359221836
SW1P 3DJ 1 Great␣Smith␣Street w359221819
SW1P 3PA 2 Dean's␣Yard w359221844
SW1P 3PF 1 r9346126
SW1P 3PS 2 Great␣Smith␣Street w359221829
SW1P 3PS 2 Great␣Smith␣Street w359221833
SW1P 3QY 1 Tufton␣Street w359221853
SW1P 3QZ 1 Tufton␣Street w359221840
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.