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OSM Postcode Mapping for SY20 8 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 %
SY20 8 235 235 26 11.1%

All units within this sector:

Unit PQI First Seen Last Seen Street Name ML Mapped
SY20 8AA 10 Maengwyn Street 1
SY20 8AB 10 2017‑01 0
SY20 8AD 10 0
SY20 8AE 10 Heol Maengwyn 1
SY20 8AF 10 1
SY20 8AG 10 Penrallt Street 10
SY20 8AH 10 2 0
SY20 8AJ 10 Penrallt Street 4
SY20 8AL 10 2013‑07 0
SY20 8AN 10 0
SY20 8AP 10 0
SY20 8AR 10 0
SY20 8AS 10 0
SY20 8AT 10 0
SY20 8AU 10 0
SY20 8AW 10 0
SY20 8AX 10 0
SY20 8AY 10 0
SY20 8AZ 10 0
SY20 8BA 10 0
SY20 8BB 10 0
SY20 8BD 10 0
SY20 8BE 10 0
SY20 8BG 10 Heol y Doll 1
SY20 8BH 10 Doll Street 1
SY20 8BJ 10 0
SY20 8BL 10 0
SY20 8BN 10 0
SY20 8BP 10 0
SY20 8BQ 10 0
SY20 8BS 10 0
SY20 8BT 10 0
SY20 8BU 10 0
SY20 8BW 10 0
SY20 8BX 10 0
SY20 8BY 10 0
SY20 8BZ 10 0
SY20 8DA 10 0
SY20 8DD 10 0
SY20 8DE 10 0
SY20 8DF 10 0
SY20 8DG 10 0
SY20 8DH 10 0
SY20 8DJ 10 0
SY20 8DL 10 0
SY20 8DN 10 Pentrerhedyn Street 5
SY20 8DP 10 0
SY20 8DQ 10 0
SY20 8DR 10 Greenfields 1
SY20 8DS 10 0
SY20 8DT 10 0
SY20 8DU 10 0
SY20 8DW 10 2023‑04 0
SY20 8DX 10 2018‑10 0
SY20 8DY 10 Maengwyn Street 2
SY20 8EA 10 0
SY20 8EB 10 Heol Maengwyn 2
SY20 8ED 10 0
SY20 8EE 10 Heol Maengwyn 4
SY20 8EF 10 0
SY20 8EG 10 0
SY20 8EH 10 0
SY20 8EJ 10 0
SY20 8EL 10 Maengwyn Street 1
SY20 8EN 10 0
SY20 8EP 10 0
SY20 8EQ 10 Forge Road 1
SY20 8ER 10 Heol Aberystwyth 2
SY20 8ES 10 0
SY20 8ET 10 0
SY20 8EU 10 0
SY20 8EX 10 0
SY20 8EY 10 0
SY20 8EZ 10 0
SY20 8FA 10 0
SY20 8FB 10 0
SY20 8HA 10 0
SY20 8HB 10 0
SY20 8HD 10 0
SY20 8HE 10 Craigfryn 1
SY20 8HF 10 0
SY20 8HG 10 0
SY20 8HH 10 0
SY20 8HJ 10 0
SY20 8HL 10 0
SY20 8HN 10 0
SY20 8HP 10 0
SY20 8HQ 10 1
SY20 8HR 10 0
SY20 8HS 10 0
SY20 8HT 10 0
SY20 8HU 10 0
SY20 8HW 10 0
SY20 8HX 10 0
SY20 8HY 10 0
SY20 8HZ 10 0
SY20 8JA 10 0
SY20 8JB 10 0
SY20 8JD 10 0
SY20 8JG 10 Taliesin 1
SY20 8JH 10 0
SY20 8JJ 10 0
SY20 8JL 10 0
SY20 8JN 10 0
SY20 8JP 10 0
SY20 8JQ 10 0
SY20 8JR 10 0
SY20 8JS 10 0
SY20 8JU 10 0
SY20 8JW 10 0
SY20 8JY 10 0
SY20 8JZ 10 Cemmaes Road 1
SY20 8LA 10 0
SY20 8LB 10 2023‑07 0
SY20 8LD 10 0
SY20 8LE 10 0
SY20 8LF 10 0
SY20 8LG 10 1
SY20 8LH 10 0
SY20 8LJ 10 0
SY20 8LL 10 0
SY20 8LN 10 0
SY20 8LP 10 0
SY20 8LQ 10 0
SY20 8LR 10 0
SY20 8LS 10 0
SY20 8LT 10 0
SY20 8LU 10 0
SY20 8LW 10 0
SY20 8LX 10 Cemmaes Road 1
SY20 8LY 10 0
SY20 8LZ 10 0
SY20 8NA 10 0
SY20 8NB 10 0
SY20 8ND 10 0
SY20 8NE 10 0
SY20 8NF 10 0
SY20 8NG 10 0
SY20 8NH 10 Machynlleth 1
SY20 8NJ 10 0
SY20 8NL 10 0
SY20 8NN 10 0
SY20 8NP 10 0
SY20 8NQ 10 0
SY20 8NR 10 0
SY20 8NS 10 0
SY20 8NT 10 0
SY20 8NU 10 0
SY20 8NW 10 0
SY20 8NX 10 0
SY20 8NY 10 0
SY20 8NZ 10 1
SY20 8PA 10 0
SY20 8PB 10 0
SY20 8PD 10 0
SY20 8PF 10 0
SY20 8PG 10 0
SY20 8PH 10 0
SY20 8PJ 10 0
SY20 8PL 10 0
SY20 8PN 10 North Road 8
SY20 8PP 10 0
SY20 8PQ 10 0
SY20 8PR 10 0
SY20 8PS 10 2021‑12 0
SY20 8PT 10 0
SY20 8PU 10 0
SY20 8PW 10 0
SY20 8PX 10 0
SY20 8PY 10 0
SY20 8PZ 10 0
SY20 8QA 10 0
SY20 8QB 10 0
SY20 8QD 10 0
SY20 8QE 10 0
SY20 8QG 10 0
SY20 8QH 10 0
SY20 8QJ 10 0
SY20 8QL 10 0
SY20 8QN 10 0
SY20 8QP 10 0
SY20 8QQ 10 0
SY20 8QR 10 0
SY20 8QS 10 0
SY20 8QT 10 0
SY20 8QW 10 0
SY20 8RA 10 0
SY20 8RB 10 0
SY20 8RD 10 0
SY20 8RE 10 0
SY20 8RF 10 0
SY20 8RG 10 0
SY20 8RN 10 0
SY20 8RP 10 0
SY20 8RR 10 0
SY20 8RW 10 0
SY20 8RY 10 0
SY20 8RZ 10 0
SY20 8SA 10 0
SY20 8SB 10 0
SY20 8SD 10 0
SY20 8SE 10 0
SY20 8SF 10 0
SY20 8SG 10 0
SY20 8SH 10 0
SY20 8SJ 10 0
SY20 8SQ 10 0
SY20 8SR 10 Derwenlas 1
SY20 8SS 10 0
SY20 8SU 10 0
SY20 8SX 10 0
SY20 8SY 10 0
SY20 8SZ 10 0
SY20 8TA 10 1
SY20 8TB 10 0
SY20 8TD 10 0
SY20 8TE 10 0
SY20 8TF 10 0
SY20 8TG 10 0
SY20 8TL 10 0
SY20 8TN 10 0
SY20 8TP 10 0
SY20 8TQ 10 0
SY20 8TR 10 0
SY20 8TS 10 0
SY20 8TU 10 0
SY20 8TW 10 0
SY20 8TX 10 0
SY20 8TY 10 0
SY20 8TZ 10 0
SY20 8UA 10 0
SY20 8UB 10 0
SY20 8UH 10 0
SY20 8UJ 10 0
SY20 8UL 10 0
SY20 8UN 10 0
SY20 8UP 10 0
SY20 8UR 10 0
SY20 8UW 10 0
SY20 8UZ 10 2013‑07 0
SY20 8WF 10 0
SY20 8WQ 10 2 0
SY20 8WR 10 2019‑01 2 0
SY20 8WW 10 2013‑07 0
SY20 8WX 10 2019‑01 2 0
SY20 8XA 10 0
SY20 8XD 10 0
SY20 8ZQ 10 0
SY20 8ZZ 10 2019‑01 2 0

Units with street mismatches in this sector:

Unit Mapped Dominant Street OSM Object Tagged Street
SY20 8AF 1 n11146622959
SY20 8AG 10 Penrallt␣Street w184018463 Heol␣y␣Doll
SY20 8AG 10 Penrallt␣Street n5176073221 Heol␣Pen'Rallt
SY20 8DN 5 Pentrerhedyn␣Street w102335081 Penrtrerhedyn␣Street
SY20 8DY 2 Maengwyn␣Street w319367581 Heol␣Maengwyn
SY20 8EB 2 Heol␣Maengwyn n3727939265 Maengwyn␣Street
SY20 8EE 4 Heol␣Maengwyn w138942503 Meangwyn␣Street
SY20 8ER 2 Heol␣Aberystwyth w206130286
SY20 8HQ 1 w111283971
SY20 8LG 1 w865321691
SY20 8NZ 1 w663778598
SY20 8PN 8 North␣Road w565910856
SY20 8PN 8 North␣Road w565089961
SY20 8PN 8 North␣Road w565910855
SY20 8PN 8 North␣Road w565919323
SY20 8PN 8 North␣Road w565087611
SY20 8PN 8 North␣Road w565366216
SY20 8TA 1 w355259228
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.