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OSM Postcode Mapping for NN1 1 Postal Sector

The circles on the map above are the postcode unit 'centriods' from Code-Point Open, 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 data may be freely used in OpenStreetMap, with the suggested source tag code-point_open

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. Only those points with a codepoint PQI less than or equal to 40 are show in 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 %
NN1 1 128 101 55 54.5%

All units within this sector:

Unit Street Name PQI ML Mapped
NN1 1AF St Giles Street 10 1
NN1 1AG 10 2 0
NN1 1AJ 10 0
NN1 1AL 10 141 0
NN1 1BQ Towcester Road 10 1
NN1 1BX 10 141 0
NN1 1DA St Giles Square 10 1
NN1 1DD 10 0
NN1 1DE St Giles Square 10 28 1
NN1 1DF George Row 10 4
NN1 1DH 10 0
NN1 1DJ 10 0
NN1 1DN 10 2 0
NN1 1DP Derngate 10 4
NN1 1DQ 10 0
NN1 1DT Wellingborough Road 10 2 1
NN1 1EA 10 0
NN1 1ED Angel Street 10 1
NN1 1EE Towcester Road 10 5
NN1 1EL 10 0
NN1 1EN 10 0
NN1 1EP 10 0
NN1 1EQ St John's Street 10 1
NN1 1ER 10 0
NN1 1ES 10 0
NN1 1ET Towcester Road 10 5
NN1 1EW 10 0
NN1 1EX 10 0
NN1 1EY 10 0
NN1 1EZ 10 0
NN1 1FA Swan Street 10 1
NN1 1FD 10 0
NN1 1FF Gaslight Road 10 1
NN1 1HB Victoria Promenade 10 1
NN1 1HF 10 0
NN1 1HH Victoria Promenade 10 2
NN1 1HJ 10 0
NN1 1HL Cattle Market Road 10 1
NN1 1HS 10 0
NN1 1HW 10 0
NN1 1JA St Giles Street 10 6
NN1 1JB 10 0
NN1 1JF St Giles Street 10 7
NN1 1JS Castilian Street 10 3
NN1 1JT 10 0
NN1 1JW St Giles Street 10 5
NN1 1JX Castilian Street 10 3
NN1 1JY 10 0
NN1 1LD Castilian Terrace 10 1
NN1 1LG Hazelwood Road 10 1
NN1 1LJ 10 0
NN1 1LN Hazelwood Road 10 1
NN1 1LP 10 0
NN1 1LQ 10 0
NN1 1LW 10 0
NN1 1LX 10 0
NN1 1LZ 10 0
NN1 1NH Bridge Street 10 2
NN1 1NN Derngate 10 1
NN1 1NR Bridge Street 10 1
NN1 1NS Bridge Street 10 4
NN1 1NT Bridge Street 10 1
NN1 1NW Bridge Street 10 2
NN1 1PA Bridge Street 10 6
NN1 1PB 10 2 0
NN1 1PD Bridge Street 10 3
NN1 1PF Bridge Street 10 1
NN1 1PJ Commercial Street 10 2
NN1 1PN 10 0
NN1 1PP 10 0
NN1 1PR Kingswell Street 10 1
NN1 1PS St Peters Square 10 5
NN1 1PT St Peters Walk 10 3
NN1 1PU 10 2 0
NN1 1PY Gas Street 10 1
NN1 1PZ Bridge Street 10 1
NN1 1QA 10 28 0
NN1 1QD 10 28 0
NN1 1QE 10 28 0
NN1 1QF Bridge Street 10 2
NN1 1QH 10 28 0
NN1 1QJ 10 28 0
NN1 1QS 10 28 0
NN1 1QT 10 28 0
NN1 1QU 10 28 0
NN1 1QW 10 28 0
NN1 1QX 10 28 0
NN1 1QY 10 28 0
NN1 1QZ 10 28 0
NN1 1RA Gold Street 10 12
NN1 1RB 10 28 0
NN1 1RD 10 28 0
NN1 1RF 10 28 0
NN1 1RG 10 28 0
NN1 1RH 10 28 0
NN1 1RJ 10 28 0
NN1 1RL 10 28 0
NN1 1RN 10 28 0
NN1 1RP 10 28 0
NN1 1RQ 10 28 0
NN1 1RR 10 28 0
NN1 1RS Gold Street 10 12
NN1 1RT 10 0
NN1 1SA Gold Street 10 1
NN1 1SH 10 0
NN1 1SN 10 0
NN1 1SP Black Lion Hill 10 1
NN1 1SR Marefair 10 11
NN1 1ST 10 0
NN1 1SW Black Lion Hill 10 1
NN1 1SX St Peters Gardens 10 1
NN1 1SY Green Street 10 1
NN1 1TA 10 0
NN1 1TB Horseshoe Street 10 2
NN1 1TD 10 0
NN1 1TH Court Road 10 1
NN1 1TP St Peters Street 10 1
NN1 1TU Derngate 10 1
NN1 1TY Derngate 10 3
NN1 1UB Derngate 10 3
NN1 1UD 10 0
NN1 1UE 10 0
NN1 1UG 10 0
NN1 1UH Derngate 10 5
NN1 1UJ 10 0
NN1 1US 10 0
NN1 1YT 10 28 0
NN1 1ZP 10 141 0

Units with street mismatches in this sector:

Unit Mapped Dominant Street OSM Object Tagged Street
NN1 1DF 4 George␣Row n5846454767 2b␣(The␣Courtyard)␣George␣Row
NN1 1DP 4 Derngate n6125646048 Guildhall␣Road
NN1 1JA 6 St␣Giles␣Street w135253676 St␣Giles␣Square
NN1 1JF 7 St␣Giles␣Street n5633571733 Saint␣Giles␣Street
NN1 1JF 7 St␣Giles␣Street n6378333485 Saint␣Giles␣Street
NN1 1RS 12 Gold␣Street n5630920808 St␣Peters␣Walk
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.