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OSM Postcode Mapping for CM1 3 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 is usually updated once a day at about 10:15 UTC, with data from about 20:30 UTC the previous day. The data used to compute the OSM mean position is updated less frequently, usually about once a week.

District Sector Units Geo. Units Mapped %
CM1 3 226 223 29 13.0%

All units within this sector:

Unit PQI First Seen Last Seen Street Name ML Mapped
CM1 3AA 10 0
CM1 3AB 10 2015‑10 0
CM1 3AE 10 Hanbury Road 8
CM1 3AF 10 Robjohns Road 3
CM1 3AG 10 Robjohns Road 14
CM1 3AR 10 Westway 1
CM1 3AT 10 0
CM1 3AX 10 0
CM1 3BB 10 Robjohns Road 1
CM1 3BE 10 2013‑07 Westway 1
CM1 3BG 10 2013‑07 Westway 2
CM1 3BH 10 Westway 2
CM1 3BJ 10 0
CM1 3BL 10 Writtle Road 1
CM1 3BP 10 0
CM1 3BQ 10 2015‑10 0
CM1 3BS 10 0
CM1 3BT 10 0
CM1 3BU 10 Tattersall Way 3
CM1 3BW 10 0
CM1 3BX 10 Writtle Road 1
CM1 3BY 10 Rodney Way 1
CM1 3BZ 10 0
CM1 3DA 10 0
CM1 3DB 10 0
CM1 3DD 10 0
CM1 3DE 10 0
CM1 3DF 10 0
CM1 3DG 10 0
CM1 3DH 10 0
CM1 3DJ 10 0
CM1 3DL 10 0
CM1 3DN 10 0
CM1 3DP 10 Robjohns Road 1
CM1 3DQ 10 0
CM1 3DR 10 0
CM1 3DS 10 0
CM1 3DT 10 0
CM1 3DU 10 The Green 1
CM1 3DX 10 0
CM1 3DY 10 0
CM1 3DZ 10 Bridge Street 1
CM1 3EA 10 0
CM1 3EB 10 0
CM1 3ED 10 0
CM1 3EE 10 0
CM1 3EF 10 0
CM1 3EG 10 0
CM1 3EH 10 Lordship Road 1
CM1 3EJ 10 0
CM1 3EL 10 0
CM1 3EN 10 0
CM1 3EP 10 0
CM1 3EQ 10 0
CM1 3ES 10 0
CM1 3ET 10 Chelmsford Road 1
CM1 3EU 10 0
CM1 3EW 10 0
CM1 3EX 10 0
CM1 3EY 10 Bridge Street 1
CM1 3EZ 10 0
CM1 3FB 10 2015‑10 0
CM1 3FD 10 0
CM1 3FE 10 0
CM1 3FF 10 0
CM1 3FH 10 0
CM1 3FJ 10 Westway 9
CM1 3FL 10 0
CM1 3GA 10 0
CM1 3GD 10 0
CM1 3GE 10 189 0
CM1 3GF 10 0
CM1 3GG 10 0
CM1 3GH 10 0
CM1 3GJ 10 0
CM1 3GL 10 0
CM1 3GN 10 0
CM1 3GP 10 0
CM1 3GR 10 0
CM1 3GS 10 0
CM1 3GU 10 0
CM1 3GW 10 0
CM1 3GY 10 0
CM1 3GZ 10 0
CM1 3HB 10 Lodge Road 2
CM1 3HD 10 0
CM1 3HE 10 0
CM1 3HF 10 0
CM1 3HG 10 Margaretting Road 1
CM1 3HH 10 0
CM1 3HJ 10 0
CM1 3HL 10 0
CM1 3HN 10 0
CM1 3HP 10 0
CM1 3HQ 10 0
CM1 3HR 10 0
CM1 3HS 10 0
CM1 3HT 10 0
CM1 3HW 10 0
CM1 3HY 10 0
CM1 3HZ 10 Lodge Road 1
CM1 3JA 10 0
CM1 3JB 10 0
CM1 3JD 10 0
CM1 3JE 10 0
CM1 3JF 10 0
CM1 3JG 10 0
CM1 3JH 10 0
CM1 3JJ 10 0
CM1 3JL 10 0
CM1 3JN 10 0
CM1 3JP 10 Long Brandocks 1
CM1 3JQ 10 0
CM1 3JR 10 0
CM1 3JS 10 0
CM1 3JT 10 0
CM1 3JU 10 0
CM1 3JW 10 0
CM1 3JX 10 0
CM1 3JY 10 0
CM1 3JZ 10 0
CM1 3LE 10 0
CM1 3LF 10 0
CM1 3LG 10 0
CM1 3LH 10 0
CM1 3LJ 10 0
CM1 3LL 10 0
CM1 3LN 10 0
CM1 3LP 10 0
CM1 3LQ 10 0
CM1 3LR 10 0
CM1 3LS 10 0
CM1 3LT 10 0
CM1 3LW 10 0
CM1 3LX 10 0
CM1 3LY 10 Redwood Drive 2
CM1 3NA 10 0
CM1 3NB 10 0
CM1 3ND 10 0
CM1 3NE 10 0
CM1 3NF 10 0
CM1 3NG 10 0
CM1 3NH 10 0
CM1 3NJ 10 0
CM1 3NL 10 0
CM1 3NN 10 0
CM1 3NP 10 0
CM1 3NQ 10 0
CM1 3NR 10 0
CM1 3NS 10 0
CM1 3NT 10 Ongar Road 2
CM1 3NU 10 0
CM1 3NW 10 0
CM1 3NX 10 0
CM1 3NY 10 0
CM1 3NZ 10 0
CM1 3PA 10 0
CM1 3PB 10 0
CM1 3PD 10 0
CM1 3PE 10 0
CM1 3PF 10 0
CM1 3PH 10 0
CM1 3PJ 10 0
CM1 3PL 10 2018‑01 0
CM1 3PN 10 0
CM1 3PP 10 0
CM1 3PQ 10 0
CM1 3PR 10 0
CM1 3PS 10 0
CM1 3PT 10 2018‑01 The Causeway 1
CM1 3PU 10 0
CM1 3PW 10 0
CM1 3PX 10 0
CM1 3PZ 10 0
CM1 3QA 10 2020‑07 0
CM1 3QD 10 0
CM1 3QE 10 0
CM1 3QF 10 0
CM1 3QG 10 0
CM1 3QH 10 Loves Green 1
CM1 3QJ 10 0
CM1 3QL 10 0
CM1 3QP 10 0
CM1 3QR 10 0
CM1 3QS 10 0
CM1 3QT 10 0
CM1 3QU 10 0
CM1 3QW 10 0
CM1 3QY 10 0
CM1 3QZ 10 0
CM1 3RA 10 0
CM1 3RB 10 0
CM1 3RD 10 0
CM1 3RE 10 0
CM1 3RF 10 0
CM1 3RG 10 0
CM1 3RH 10 0
CM1 3RL 10 0
CM1 3RN 10 0
CM1 3RP 10 0
CM1 3RQ 10 0
CM1 3RR 10 Lordship Road 2
CM1 3RS 10 0
CM1 3RT 10 0
CM1 3RU 10 0
CM1 3RW 10 Writtle Road 3
CM1 3RX 10 2015‑10 0
CM1 3RY 10 0
CM1 3RZ 10 0
CM1 3SA 10 0
CM1 3SB 10 0
CM1 3SD 10 0
CM1 3SE 10 0
CM1 3SF 10 0
CM1 3SG 10 0
CM1 3SH 10 0
CM1 3SJ 10 0
CM1 3SL 10 0
CM1 3SN 10 0
CM1 3SP 10 0
CM1 3SQ 10 0
CM1 3SR 10 0
CM1 3SS 10 0
CM1 3ST 10 0
CM1 3SU 10 0
CM1 3SX 10 Broomfield Road 1
CM1 3SY 10 189 0
CM1 3TF 10 0
CM1 3TH 10 Farrow Road 2
CM1 3TP 10 2013‑07 0
CM1 3TU 10 2021‑04 Tattersall Way 1
CM1 3TY 10 2015‑10 0
CM1 3UB 10 Tattersall Way 2
CM1 3UD 10 2018‑01 0
CM1 3UP 10 189 0
CM1 3US 10 0
CM1 3WQ 10 0
CM1 3WR 10 0
CM1 3WS 10 0
CM1 3WT 10 0
CM1 3WU 10 0
CM1 3WX 10 2017‑01 189 0
CM1 3WY 10 2015‑10 0
CM1 3XZ 10 2015‑10 0
CM1 3YA 10 0
CM1 3YB 10 2017‑04 189 0

Units with street mismatches in this sector:

Unit Mapped Dominant Street OSM Object Tagged Street
CM1 3BU 3 Tattersall␣Way w263978159 Writtle␣Road
CM1 3BU 3 Tattersall␣Way n9132868021 Chelmsford␣Trade␣Park
CM1 3NT 2 Ongar␣Road n7014651964 Ongar␣Road␣(West)
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.