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OSM Postcode Mapping for DE21 5 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 %
DE21 5 81 80 40 50.0%

All units within this sector:

Unit PQI First Seen Last Seen Street Name ML Mapped
DE21 5AA 10 Alfreton Road 1
DE21 5AB 10 Alfreton Road 2
DE21 5AD 10 0
DE21 5AE 10 Alfreton Road 1
DE21 5AF 10 0
DE21 5AG 10 0
DE21 5AH 10 Morley Lane 1
DE21 5AJ 10 0
DE21 5AL 10 0
DE21 5AN 10 0
DE21 5AP 10 Chatsworth Drive 16
DE21 5AQ 10 0
DE21 5AR 10 0
DE21 5AS 10 The Chase 1
DE21 5AT 10 Whittaker Lane 1
DE21 5AU 10 Moor Lane 1
DE21 5AW 10 0
DE21 5AX 10 0
DE21 5AY 10 0
DE21 5BA 10 Alfreton Road 1
DE21 5BB 10 Alfreton Road 1
DE21 5BD 10 0
DE21 5BE 10 1
DE21 5BF 10 0
DE21 5BG 10 2013‑07 0
DE21 5BH 10 0
DE21 5BJ 10 Sandy Lane 1
DE21 5BL 10 Smalley Mill Road 5
DE21 5BN 10 0
DE21 5BP 10 0
DE21 5BQ 10 Church Street 2
DE21 5BR 10 Church Street 2
DE21 5BS 10 0
DE21 5BT 10 French Lane 1
DE21 5DA 10 Ford Lane 2
DE21 5DB 10 Alfreton Road 2
DE21 5DD 10 Alfreton Road 1
DE21 5DE 10 Alfreton Road 3
DE21 5DF 10 Alfreton Road 4
DE21 5DG 10 0
DE21 5DH 10 The Town 1
DE21 5DJ 10 Barley Close 1
DE21 5DL 10 0
DE21 5DN 10 Station Road 1
DE21 5DP 10 0
DE21 5DQ 10 0
DE21 5DR 10 Duffield Road 4
DE21 5DS 10 0
DE21 5DT 10 0
DE21 5DU 10 0
DE21 5DW 10 Rigga Lane 1
DE21 5DX 10 0
DE21 5DY 10 0
DE21 5DZ 10 0
DE21 5EA 10 Vicarage Lane 4
DE21 5EB 10 1
DE21 5ED 10 Camp Wood Close 1
DE21 5EE 10 Barley Close 0
DE21 5EF 10 0
DE21 5EG 10 1
DE21 5EH 10 0
DE21 5EJ 10 Alfreton Road 11
DE21 5EL 10 Outrams Wharf 1
DE21 5EN 10 0
DE21 5EP 10 0
DE21 5EQ 10 1
DE21 5LA 10 Moor Road 1
DE21 5LB 10 Ash Tree Close 1
DE21 5LD 10 0
DE21 5LE 10 0
DE21 5LF 10 Brookside Road 4
DE21 5LG 10 Station Road 1
DE21 5LH 10 0
DE21 5LJ 10 0
DE21 5LL 10 Rectory Lane 1
DE21 5LN 10 0
DE21 5LP 10 0
DE21 5LQ 10 0
DE21 5LR 10 Moorway 1
DE21 5LS 10 0
DE21 5LU 10 Pall Mall 1
DE21 5YR 10 0
DE21 5YS 10 0
DE21 5ZA 10 87 0
DE21 5ZP 10 0
DE21 5ZQ 10 0

Units with street mismatches in this sector:

Unit Mapped Dominant Street OSM Object Tagged Street
DE21 5BE 1 w643142650
DE21 5BL 5 Smalley␣Mill␣Road n8639443245 Horsley␣Lodge␣Golf␣Course
DE21 5DA 2 Ford␣Lane w577211670
DE21 5DB 2 Alfreton␣Road n4032165536 Derby␣Garden␣Centre
DE21 5EB 1 w377463072
DE21 5EG 1 w54969497
DE21 5EJ 11 Alfreton␣Road w54973917 Old␣Hall␣Mill␣Business␣Park
DE21 5EQ 1 w548913265
DE21 5LF 4 Brookside␣Road w104072232 Moor␣Road
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.