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 | % |
---|---|---|---|---|---|
SY4 | 1 | 144 | 144 | 9 | 6.2% |
All units within this sector:
Unit | PQI | First Seen | Last Seen | Street Name | ML | Mapped |
---|---|---|---|---|---|---|
SY4 1AA | 10 | 0 | ||||
SY4 1AB | 10 | 0 | ||||
SY4 1AD | 10 | 0 | ||||
SY4 1AE | 10 | 0 | ||||
SY4 1AF | 10 | 0 | ||||
SY4 1AG | 10 | 0 | ||||
SY4 1AH | 10 | 0 | ||||
SY4 1AJ | 10 | 0 | ||||
SY4 1AL | 10 | 0 | ||||
SY4 1AN | 10 | 0 | ||||
SY4 1AP | 10 | 0 | ||||
SY4 1AQ | 10 | 0 | ||||
SY4 1AR | 10 | 0 | ||||
SY4 1AS | 10 | 0 | ||||
SY4 1AT | 10 | 0 | ||||
SY4 1AU | 10 | 0 | ||||
SY4 1AW | 10 | 0 | ||||
SY4 1AX | 10 | 1 | ||||
SY4 1AY | 10 | 0 | ||||
SY4 1AZ | 10 | 0 | ||||
SY4 1BA | 10 | 0 | ||||
SY4 1BB | 10 | 0 | ||||
SY4 1BD | 10 | 0 | ||||
SY4 1BE | 10 | 0 | ||||
SY4 1BG | 10 | 0 | ||||
SY4 1BH | 10 | 0 | ||||
SY4 1BJ | 10 | 0 | ||||
SY4 1BL | 10 | 0 | ||||
SY4 1BN | 10 | 0 | ||||
SY4 1BP | 10 | 0 | ||||
SY4 1BQ | 10 | 0 | ||||
SY4 1BS | 10 | 0 | ||||
SY4 1BT | 10 | 0 | ||||
SY4 1BU | 10 | 0 | ||||
SY4 1BW | 10 | 0 | ||||
SY4 1BY | 10 | 0 | ||||
SY4 1BZ | 10 | Nesscliffe Services | 3 | |||
SY4 1DA | 10 | 0 | ||||
SY4 1DB | 10 | Hopton Lane | 2 | |||
SY4 1DD | 10 | 0 | ||||
SY4 1DE | 10 | 0 | ||||
SY4 1DF | 10 | 0 | ||||
SY4 1DG | 10 | 0 | ||||
SY4 1DH | 10 | 0 | ||||
SY4 1DJ | 10 | 0 | ||||
SY4 1DL | 10 | 0 | ||||
SY4 1DN | 10 | 0 | ||||
SY4 1DP | 10 | 0 | ||||
SY4 1DQ | 10 | 0 | ||||
SY4 1DR | 10 | 0 | ||||
SY4 1DS | 10 | 0 | ||||
SY4 1DT | 10 | 0 | ||||
SY4 1DU | 10 | 0 | ||||
SY4 1DX | 10 | 2 | 1 | |||
SY4 1DY | 10 | 0 | ||||
SY4 1DZ | 10 | 0 | ||||
SY4 1EA | 10 | 0 | ||||
SY4 1EB | 10 | Holyhead Road | 2 | |||
SY4 1ED | 10 | 1 | ||||
SY4 1EE | 10 | 0 | ||||
SY4 1EF | 10 | 0 | ||||
SY4 1EG | 10 | 0 | ||||
SY4 1EH | 10 | 0 | ||||
SY4 1EJ | 10 | 0 | ||||
SY4 1EL | 10 | 0 | ||||
SY4 1EN | 10 | 0 | ||||
SY4 1EP | 10 | 0 | ||||
SY4 1EQ | 10 | 0 | ||||
SY4 1ER | 10 | 0 | ||||
SY4 1ES | 10 | 0 | ||||
SY4 1ET | 10 | 0 | ||||
SY4 1EU | 10 | 0 | ||||
SY4 1EW | 10 | 0 | ||||
SY4 1EX | 10 | 0 | ||||
SY4 1EY | 10 | 0 | ||||
SY4 1EZ | 10 | 0 | ||||
SY4 1FA | 10 | 0 | ||||
SY4 1FB | 10 | 0 | ||||
SY4 1FD | 10 | 0 | ||||
SY4 1FE | 10 | 0 | ||||
SY4 1FF | 10 | 2023‑01 | 0 | |||
SY4 1FG | 10 | 0 | ||||
SY4 1FH | 10 | 0 | ||||
SY4 1HA | 10 | 0 | ||||
SY4 1HB | 10 | 0 | ||||
SY4 1HD | 10 | 0 | ||||
SY4 1HE | 10 | 0 | ||||
SY4 1HF | 10 | 0 | ||||
SY4 1HG | 10 | 0 | ||||
SY4 1HH | 10 | 0 | ||||
SY4 1HJ | 10 | 0 | ||||
SY4 1HL | 10 | 0 | ||||
SY4 1HN | 10 | 0 | ||||
SY4 1HP | 10 | 0 | ||||
SY4 1HQ | 10 | 0 | ||||
SY4 1HS | 10 | 0 | ||||
SY4 1HT | 10 | 0 | ||||
SY4 1HU | 10 | 0 | ||||
SY4 1HW | 10 | 2 | 0 | |||
SY4 1HX | 10 | 1 | ||||
SY4 1HY | 10 | 0 | ||||
SY4 1HZ | 10 | 0 | ||||
SY4 1JA | 10 | 0 | ||||
SY4 1JB | 10 | 0 | ||||
SY4 1JD | 10 | Olden Lane | 1 | |||
SY4 1JE | 10 | 0 | ||||
SY4 1JF | 10 | 0 | ||||
SY4 1JG | 10 | 0 | ||||
SY4 1JH | 10 | 0 | ||||
SY4 1JJ | 10 | 0 | ||||
SY4 1JL | 10 | 0 | ||||
SY4 1JN | 10 | 0 | ||||
SY4 1JQ | 10 | 0 | ||||
SY4 1JR | 10 | 0 | ||||
SY4 1JT | 10 | 0 | ||||
SY4 1JW | 10 | 0 | ||||
SY4 1JY | 10 | 0 | ||||
SY4 1JZ | 10 | 0 | ||||
SY4 1LA | 10 | Church Street | 1 | |||
SY4 1LB | 10 | 0 | ||||
SY4 1LD | 10 | 0 | ||||
SY4 1LE | 10 | 0 | ||||
SY4 1LF | 10 | 0 | ||||
SY4 1LG | 10 | 0 | ||||
SY4 1LH | 10 | 0 | ||||
SY4 1LJ | 10 | 0 | ||||
SY4 1LL | 10 | 0 | ||||
SY4 1LP | 10 | 0 | ||||
SY4 1LQ | 10 | 0 | ||||
SY4 1LR | 10 | 0 | ||||
SY4 1LS | 10 | 0 | ||||
SY4 1LT | 10 | 0 | ||||
SY4 1LU | 10 | 0 | ||||
SY4 1LW | 10 | 0 | ||||
SY4 1LX | 10 | 0 | ||||
SY4 1LY | 10 | 0 | ||||
SY4 1LZ | 10 | 0 | ||||
SY4 1NA | 10 | 0 | ||||
SY4 1NB | 10 | 0 | ||||
SY4 1ND | 10 | 0 | ||||
SY4 1NE | 10 | 0 | ||||
SY4 1NF | 10 | 0 | ||||
SY4 1NG | 10 | 0 | ||||
SY4 1NH | 10 | 2021‑12 | 0 | |||
SY4 1WB | 10 | 2013‑07 | 7 | 0 | ||
SY4 1WS | 10 | 7 | 0 | |||
SY4 1WX | 10 | 7 | 0 | |||
SY4 1ZZ | 10 | 2019‑01 | 47 | 0 |
Units with street mismatches in this sector:
Unit | Mapped | Dominant Street | OSM Object | Tagged Street |
---|---|---|---|---|
SY4 1AX | 1 | w980591035 | ||
SY4 1DB | 2 | Hopton␣Lane | w597708583 | |
SY4 1DX | 1 | n2113528516 | ||
SY4 1EB | 2 | Holyhead␣Road | w437807810 | |
SY4 1ED | 1 | w437807809 | ||
SY4 1HX | 1 | w405862099 |