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 |