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 | % |
---|---|---|---|---|---|
SN1 | 3 | 159 | 158 | 53 | 33.5% |
All units within this sector:
Unit | PQI | First Seen | Last Seen | Street Name | ML | Mapped |
---|---|---|---|---|---|---|
SN1 3AD | 10 | Drove Road | 2 | |||
SN1 3AE | 10 | Drove Road | 17 | |||
SN1 3AF | 10 | 0 | ||||
SN1 3AG | 10 | Drove Road | 1 | |||
SN1 3AH | 10 | 1 | ||||
SN1 3AJ | 10 | Victoria Road | 4 | |||
SN1 3AL | 10 | Victoria Road | 2 | |||
SN1 3AQ | 10 | Drove Road | 16 | |||
SN1 3AS | 10 | Victoria Road | 1 | |||
SN1 3AU | 10 | Drove Road | 1 | |||
SN1 3AW | 10 | Victoria Road | 1 | |||
SN1 3AY | 10 | 0 | ||||
SN1 3BB | 10 | Victoria Road | 1 | |||
SN1 3BD | 10 | Victoria Road | 17 | |||
SN1 3BE | 10 | 2018‑04 | 0 | |||
SN1 3BF | 10 | 0 | ||||
SN1 3BG | 10 | Albert Street | 1 | |||
SN1 3BH | 10 | Victoria Road | 2 | 1 | ||
SN1 3BL | 10 | Victoria Road | 2 | 2 | ||
SN1 3BP | 10 | 0 | ||||
SN1 3BU | 10 | Victoria Road | 1 | |||
SN1 3DB | 10 | 0 | ||||
SN1 3DD | 10 | 0 | ||||
SN1 3DE | 10 | 0 | ||||
SN1 3DF | 10 | 0 | ||||
SN1 3DP | 10 | Newport Street | 3 | |||
SN1 3DQ | 10 | 2 | ||||
SN1 3DR | 10 | 0 | ||||
SN1 3DT | 10 | 0 | ||||
SN1 3DU | 10 | Newport Street | 3 | |||
SN1 3DX | 10 | Newport Street | 14 | |||
SN1 3EB | 10 | The Square | 2 | |||
SN1 3ED | 10 | Horder Mews | 2 | |||
SN1 3EE | 10 | 0 | ||||
SN1 3EF | 10 | Dammas Lane | 4 | |||
SN1 3EG | 10 | High Street | 9 | |||
SN1 3EJ | 10 | 2016‑10 | 0 | |||
SN1 3EN | 10 | High Street | 1 | |||
SN1 3EP | 10 | High Street | 9 | |||
SN1 3ET | 10 | 0 | ||||
SN1 3EX | 10 | 0 | ||||
SN1 3EY | 10 | 0 | ||||
SN1 3EZ | 10 | 2023‑04 | 0 | |||
SN1 3FA | 10 | 0 | ||||
SN1 3FB | 10 | 0 | ||||
SN1 3FD | 10 | 0 | ||||
SN1 3FE | 10 | 0 | ||||
SN1 3FF | 10 | 0 | ||||
SN1 3FG | 10 | 0 | ||||
SN1 3FH | 10 | 0 | ||||
SN1 3FJ | 10 | Charlotte Mews | 2 | |||
SN1 3FL | 10 | Little London | 1 | |||
SN1 3FN | 10 | 0 | ||||
SN1 3FP | 10 | 0 | ||||
SN1 3FQ | 10 | 0 | ||||
SN1 3FR | 50 | 2024‑01 | 0 | |||
SN1 3FS | 10 | 2021‑09 | 0 | |||
SN1 3FT | 10 | 2024‑01 | 0 | |||
SN1 3HA | 10 | Brock End | 3 | |||
SN1 3HB | 10 | Cricklade Street | 9 | |||
SN1 3HE | 10 | Cricklade Street | 1 | |||
SN1 3HF | 10 | Church Road | 7 | |||
SN1 3HG | 10 | Cricklade Street | 10 | |||
SN1 3HH | 10 | Union Row | 4 | |||
SN1 3HJ | 10 | Albert Street | 6 | |||
SN1 3HL | 10 | 0 | ||||
SN1 3HN | 10 | Belle Vue Road | 16 | |||
SN1 3HP | 10 | 0 | ||||
SN1 3HQ | 10 | Belle Vue Road | 20 | |||
SN1 3HR | 10 | 0 | ||||
SN1 3HS | 10 | 0 | ||||
SN1 3HT | 10 | Charlotte Mews | 1 | |||
SN1 3HU | 10 | Little London | 2 | |||
SN1 3HW | 10 | 0 | ||||
SN1 3HX | 10 | 0 | ||||
SN1 3HY | 10 | Albert Street | 3 | |||
SN1 3HZ | 10 | 2023‑07 | Chapel Corner | 8 | ||
SN1 3JA | 10 | 0 | ||||
SN1 3JB | 10 | 0 | ||||
SN1 3JD | 10 | 0 | ||||
SN1 3JE | 10 | 0 | ||||
SN1 3JF | 10 | 0 | ||||
SN1 3JG | 10 | Eastcott Hill | 4 | |||
SN1 3JH | 10 | 0 | ||||
SN1 3JJ | 10 | 0 | ||||
SN1 3JL | 10 | 0 | ||||
SN1 3JN | 10 | 0 | ||||
SN1 3JP | 10 | 0 | ||||
SN1 3JR | 10 | 0 | ||||
SN1 3JS | 10 | Prospect Hill | 1 | |||
SN1 3JT | 10 | 0 | ||||
SN1 3JU | 10 | 0 | ||||
SN1 3JW | 10 | 0 | ||||
SN1 3JX | 10 | North Street | 1 | |||
SN1 3JY | 10 | 0 | ||||
SN1 3LA | 10 | 0 | ||||
SN1 3LB | 10 | King William Street | 1 | |||
SN1 3LD | 10 | 0 | ||||
SN1 3LE | 10 | 0 | ||||
SN1 3LF | 10 | 0 | ||||
SN1 3LG | 10 | Prospect Place | 1 | |||
SN1 3LH | 10 | 0 | ||||
SN1 3LJ | 10 | 0 | ||||
SN1 3LL | 10 | 0 | ||||
SN1 3LQ | 10 | Prospect Place | 1 | |||
SN1 3LR | 10 | Eastcott Road | 1 | |||
SN1 3LS | 10 | 0 | ||||
SN1 3LT | 10 | Eastcott Road | 1 | |||
SN1 3LU | 10 | 0 | ||||
SN1 3LW | 10 | 0 | ||||
SN1 3LX | 10 | 0 | ||||
SN1 3LY | 10 | 0 | ||||
SN1 3LZ | 10 | Savernake Street | 2 | |||
SN1 3NA | 10 | 0 | ||||
SN1 3NB | 10 | 0 | ||||
SN1 3ND | 10 | 0 | ||||
SN1 3NE | 10 | 0 | ||||
SN1 3NF | 10 | 0 | ||||
SN1 3NG | 10 | 0 | ||||
SN1 3NH | 10 | 0 | ||||
SN1 3NJ | 10 | 0 | ||||
SN1 3NL | 10 | 0 | ||||
SN1 3NN | 10 | 0 | ||||
SN1 3NP | 10 | 0 | ||||
SN1 3NQ | 10 | 0 | ||||
SN1 3NR | 10 | 0 | ||||
SN1 3NS | 10 | 0 | ||||
SN1 3NT | 10 | 0 | ||||
SN1 3NU | 10 | 0 | ||||
SN1 3NW | 10 | 0 | ||||
SN1 3NX | 10 | 0 | ||||
SN1 3NY | 10 | 0 | ||||
SN1 3NZ | 10 | 0 | ||||
SN1 3PA | 10 | 0 | ||||
SN1 3PB | 10 | 0 | ||||
SN1 3PD | 10 | 0 | ||||
SN1 3PE | 10 | 0 | ||||
SN1 3PF | 10 | 0 | ||||
SN1 3PG | 10 | 0 | ||||
SN1 3PH | 10 | 0 | ||||
SN1 3PJ | 10 | 0 | ||||
SN1 3PL | 10 | 0 | ||||
SN1 3PN | 10 | 0 | ||||
SN1 3PP | 10 | 0 | ||||
SN1 3PQ | 10 | 0 | ||||
SN1 3PR | 10 | 0 | ||||
SN1 3PS | 10 | 0 | ||||
SN1 3PT | 10 | 0 | ||||
SN1 3PU | 10 | 0 | ||||
SN1 3PW | 10 | 0 | ||||
SN1 3PX | 10 | 0 | ||||
SN1 3PY | 10 | Clifton Street | 1 | |||
SN1 3PZ | 10 | 0 | ||||
SN1 3QA | 10 | 0 | ||||
SN1 3QB | 10 | 0 | ||||
SN1 3QD | 10 | 0 | ||||
SN1 3QF | 10 | 0 | ||||
SN1 3RA | 10 | Hoopers Place | 3 | |||
SN1 3RT | 10 | Chandler Close | 11 | |||
SN1 3RW | 10 | 0 | ||||
SN1 3UN | 10 | 2019‑01 | 105 | 0 | ||
SN1 3UQ | 10 | 37 | 0 | |||
SN1 3UZ | 10 | 0 | ||||
SN1 3XL | 10 | 105 | 0 |
Units with street mismatches in this sector:
Unit | Mapped | Dominant Street | OSM Object | Tagged Street |
---|---|---|---|---|
SN1 3AH | 1 | w143763306 | ||
SN1 3DQ | 2 | w545346605 | ||
SN1 3DQ | 2 | w309834142 | ||
SN1 3DU | 3 | Newport␣Street | w1226440995 | Station␣Approach |
SN1 3EP | 9 | High␣Street | n11283656220 | Wood␣Street |