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OSM Postcode Mapping for CM3 1 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 %
CM3 1 214 214 14 6.5%

All units within this sector:

Unit PQI First Seen Last Seen Street Name ML Mapped
CM3 1AA 10 0
CM3 1AB 10 Chelmsford Road 1
CM3 1AD 10 0
CM3 1AE 10 0
CM3 1AF 10 Chelmsford Road 18
CM3 1AG 10 0
CM3 1AH 10 0
CM3 1AJ 10 0
CM3 1AL 10 0
CM3 1AN 10 0
CM3 1AP 10 0
CM3 1AQ 10 0
CM3 1AR 10 0
CM3 1AS 10 0
CM3 1AT 10 0
CM3 1AU 10 0
CM3 1AW 10 0
CM3 1AX 10 0
CM3 1AY 10 0
CM3 1AZ 10 0
CM3 1BA 10 0
CM3 1BD 10 0
CM3 1BE 10 0
CM3 1BG 10 0
CM3 1BJ 10 0
CM3 1BL 10 Main Road 2
CM3 1BN 10 2 0
CM3 1BP 10 0
CM3 1BQ 10 Main Road 1
CM3 1BS 10 0
CM3 1BT 10 0
CM3 1BU 10 0
CM3 1BW 10 0
CM3 1BX 10 0
CM3 1BY 10 0
CM3 1BZ 10 0
CM3 1DA 10 0
CM3 1DB 10 0
CM3 1DD 10 0
CM3 1DE 10 0
CM3 1DF 10 South Street 1
CM3 1DG 10 0
CM3 1DH 10 0
CM3 1DJ 10 0
CM3 1DP 10 0
CM3 1DQ 10 0
CM3 1DR 10 0
CM3 1DS 10 0
CM3 1DT 10 Hoe Lane 1
CM3 1DX 10 0
CM3 1DZ 10 0
CM3 1EA 10 0
CM3 1EB 10 0
CM3 1ED 10 0
CM3 1EE 10 0
CM3 1EF 10 0
CM3 1EG 10 0
CM3 1EH 10 0
CM3 1EJ 10 0
CM3 1EL 10 0
CM3 1EN 10 0
CM3 1EP 10 0
CM3 1EQ 10 0
CM3 1ER 10 0
CM3 1ES 10 0
CM3 1ET 10 Barrack Lane 2
CM3 1EU 10 0
CM3 1EW 10 0
CM3 1EX 10 0
CM3 1EY 10 2013‑07 0
CM3 1FA 10 0
CM3 1FD 10 0
CM3 1FE 10 0
CM3 1FF 10 0
CM3 1FH 10 0
CM3 1FJ 10 0
CM3 1FL 10 0
CM3 1FN 10 0
CM3 1FP 10 0
CM3 1FQ 10 0
CM3 1FR 10 0
CM3 1FS 10 0
CM3 1FT 10 0
CM3 1GS 10 0
CM3 1GT 10 0
CM3 1GU 10 0
CM3 1GX 10 0
CM3 1GY 10 0
CM3 1GZ 10 0
CM3 1HA 10 0
CM3 1HB 10 0
CM3 1HD 10 0
CM3 1HE 10 0
CM3 1HF 10 0
CM3 1HG 10 0
CM3 1HH 10 0
CM3 1HJ 10 0
CM3 1HL 10 0
CM3 1HN 10 0
CM3 1HP 10 0
CM3 1HQ 10 0
CM3 1HR 10 0
CM3 1HS 10 0
CM3 1HT 10 0
CM3 1HU 10 Green Street 1
CM3 1HW 10 0
CM3 1HX 10 0
CM3 1HY 10 0
CM3 1HZ 10 0
CM3 1JA 10 0
CM3 1JB 10 0
CM3 1JD 10 0
CM3 1JE 10 0
CM3 1JF 10 Pleshey Road 1
CM3 1JG 10 0
CM3 1JH 10 0
CM3 1JJ 10 0
CM3 1JL 10 0
CM3 1JN 10 2 0
CM3 1JP 10 0
CM3 1JQ 10 0
CM3 1JR 10 0
CM3 1JS 10 0
CM3 1JT 10 0
CM3 1JU 10 0
CM3 1JW 10 0
CM3 1JX 10 0
CM3 1JY 10 0
CM3 1JZ 10 0
CM3 1LA 10 0
CM3 1LB 10 0
CM3 1LD 10 0
CM3 1LE 10 0
CM3 1LF 10 0
CM3 1LG 10 Back Lane 3
CM3 1LH 10 0
CM3 1LJ 10 Woods Road 1
CM3 1LL 10 Main Road 3
CM3 1LN 10 0
CM3 1LP 10 0
CM3 1LQ 10 Main Road 1
CM3 1LT 10 0
CM3 1LW 10 0
CM3 1LX 10 0
CM3 1LY 10 0
CM3 1LZ 10 0
CM3 1NA 10 0
CM3 1NB 10 0
CM3 1ND 10 0
CM3 1NE 10 0
CM3 1NF 10 0
CM3 1NG 10 0
CM3 1NH 10 0
CM3 1NJ 10 0
CM3 1NL 10 0
CM3 1NN 10 0
CM3 1NP 10 0
CM3 1NQ 10 0
CM3 1NR 10 0
CM3 1NS 10 0
CM3 1NT 10 0
CM3 1NU 10 0
CM3 1NW 10 0
CM3 1NX 10 0
CM3 1NY 10 0
CM3 1NZ 10 0
CM3 1PA 10 0
CM3 1PB 10 0
CM3 1PD 10 0
CM3 1PE 10 0
CM3 1PF 10 0
CM3 1PG 10 0
CM3 1PH 10 0
CM3 1PJ 10 0
CM3 1PL 10 0
CM3 1PN 10 0
CM3 1PP 10 0
CM3 1PQ 10 0
CM3 1PR 10 0
CM3 1PS 10 0
CM3 1PT 10 0
CM3 1PU 10 0
CM3 1PW 10 0
CM3 1PX 10 0
CM3 1PY 10 0
CM3 1PZ 10 0
CM3 1QA 10 0
CM3 1QB 10 0
CM3 1QD 10 0
CM3 1QE 10 0
CM3 1QF 10 0
CM3 1QG 10 0
CM3 1QH 10 0
CM3 1QJ 10 0
CM3 1QL 10 0
CM3 1QN 10 0
CM3 1QP 50 0
CM3 1QQ 10 0
CM3 1QR 10 0
CM3 1QS 10 0
CM3 1QW 10 0
CM3 1QX 10 0
CM3 1RA 10 0
CM3 1RB 10 0
CM3 1RD 10 0
CM3 1RE 10 0
CM3 1RP 10 1
CM3 1RR 10 0
CM3 1RS 10 0
CM3 1RT 10 0
CM3 1RU 10 0
CM3 1RX 10 0
CM3 1SG 10 0
CM3 1SH 10 0
CM3 1TG 10 0
CM3 1WA 10 0
CM3 1WB 10 0
CM3 1WZ 10 0
CM3 1YT 10 0

Units with street mismatches in this sector:

Unit Mapped Dominant Street OSM Object Tagged Street
CM3 1AF 18 Chelmsford␣Road w890859240
CM3 1AF 18 Chelmsford␣Road w890859228
CM3 1AF 18 Chelmsford␣Road w890859232
CM3 1AF 18 Chelmsford␣Road w890859238
CM3 1AF 18 Chelmsford␣Road w879448647
CM3 1AF 18 Chelmsford␣Road w890859231
CM3 1AF 18 Chelmsford␣Road w890859235
CM3 1ET 2 Barrack␣Lane w1086655223
CM3 1LL 3 Main␣Road w634008257
CM3 1LL 3 Main␣Road n5984122604
CM3 1RP 1 w865640392
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.