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OSM Postcode Mapping for SN1 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 %
SN1 1 91 75 19 25.3%

All units within this sector:

Unit PQI First Seen Last Seen Street Name ML Mapped
SN1 1AE 10 0
SN1 1AG 10 0
SN1 1AH 10 0
SN1 1AL 10 0
SN1 1BA 10 The Parade 2
SN1 1BB 10 The Parade 3
SN1 1BD 10 Holbrook Way 1
SN1 1BE 10 0
SN1 1BF 10 0
SN1 1BL 10 Bridge Street 1
SN1 1BP 10 0
SN1 1BT 10 Bridge Street 3
SN1 1BU 10 0
SN1 1BX 10 0
SN1 1BY 10 0
SN1 1DA 10 0
SN1 1DG 10 Station Road 2
SN1 1DH 10 0
SN1 1DP 10 0
SN1 1DQ 10 0
SN1 1DR 10 0
SN1 1DS 10 0
SN1 1DT 10 0
SN1 1DW 10 0
SN1 1DX 10 0
SN1 1DY 10 0
SN1 1EA 10 0
SN1 1EB 10 0
SN1 1ED 10 2020‑07 Carfax Street 0
SN1 1EE 10 11 0
SN1 1EL 10 0
SN1 1FA 10 Victoria Road 3
SN1 1FE 10 0
SN1 1FL 10 2013‑07 37 0
SN1 1FP 10 2018‑04 100 0
SN1 1FR 10 2018‑04 100 0
SN1 1FT 10 2019‑01 100 0
SN1 1FY 10 2013‑07 37 0
SN1 1GH 10 100 0
SN1 1GW 10 2 0
SN1 1HE 10 0
SN1 1HF 10 0
SN1 1HH 10 0
SN1 1HL 10 Milford Street 2 1
SN1 1HN 10 0
SN1 1JH 10 2015‑10 0
SN1 1JL 10 Regent Street 2
SN1 1JQ 10 Regent Street 3
SN1 1JS 10 Regent Street 1
SN1 1JY 10 0
SN1 1JZ 10 0
SN1 1LA 10 0
SN1 1LD 10 Canal Walk 2
SN1 1LE 10 Havelock Square 6
SN1 1LF 10 1
SN1 1LH 10 11 0
SN1 1LL 10 0
SN1 1LP 10 11 0
SN1 1LR 10 11 0
SN1 1LS 10 11 0
SN1 1LT 10 11 0
SN1 1LU 10 11 0
SN1 1LW 10 11 0
SN1 1LX 10 11 0
SN1 1LY 10 11 0
SN1 1LZ 10 11 0
SN1 1NB 10 11 0
SN1 1NF 10 2019‑01 100 0
SN1 1NH 10 2013‑07 0
SN1 1NS 10 2013‑07 37 0
SN1 1PJ 10 0
SN1 1PN 10 0
SN1 1PP 10 0
SN1 1PR 10 0
SN1 1PW 10 2013‑07 0
SN1 1PX 10 0
SN1 1PY 10 0
SN1 1PZ 10 0
SN1 1QB 10 0
SN1 1QF 10 0
SN1 1QG 10 0
SN1 1QH 10 2013‑07 0
SN1 1QN 10 Theatre Square 4
SN1 1QP 10 0
SN1 1QS 10 Edgeware Road 1
SN1 1QT 10 0
SN1 1QU 10 0
SN1 1RA 10 0
SN1 1RE 10 0
SN1 1RL 10 0
SN1 1RN 10 0
SN1 1RQ 10 0
SN1 1RT 10 0
SN1 1RZ 10 Market Street 12
SN1 1SD 10 Havelock Street 2
SN1 1SG 10 0
SN1 1SQ 10 0
SN1 1SW 10 2015‑10 0
SN1 1TA 10 2016‑10 0
SN1 1TN 10 Fleming Way 1
SN1 1TU 10 0
SN1 1TZ 10 0
SN1 1UG 10 0
SN1 1UH 10 2017‑10 0
SN1 1UQ 10 0
SN1 1UY 10 2017‑04 0
SN1 1WA 10 2019‑01 100 0
SN1 1WD 10 2013‑07 37 0
SN1 1WP 10 2013‑07 37 0
SN1 1WR 10 37 0
SN1 1YB 10 2019‑01 100 0
SN1 1YD 10 2019‑01 100 0
SN1 1YE 10 2019‑01 100 0
SN1 1YH 10 2019‑01 100 0
SN1 1YN 10 100 0
SN1 1ZA 10 100 0
SN1 1ZP 10 2019‑01 100 0
SN1 1ZQ 10 100 0

Units with street mismatches in this sector:

Unit Mapped Dominant Street OSM Object Tagged Street
SN1 1LF 1 n8872050840
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.