NN1 3 postcode sector in the NN1 district

NN1 3 is a sector of the NN1 district: every postcode that starts NN1 3. It has 121 postcodes in use, 4 of them large-user postcodes. A large-user postcode is one Royal Mail gives to a single address that gets a lot of mail.

Not sure what a sector is? UK postcode format explained.

Every postcode in the NN1 3 sector, and which are new since 2020

Map of every postcode in the NN1 3 sector, by new since 2020 Of the 121 postcodes in the NN1 3 sector that ONS places, 6 are new since 2020 and 115 were in use before 2020. One group of new postcodes is outlined: 6 new postcodes since 2020. Places named: Northampton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A508A5123 NN1 3AE: before 2020NN1 3AH: before 2020NN1 3AS: before 2020NN1 3AU: before 2020NN1 3AX: before 2020NN1 3BA: before 2020NN1 3BE: before 2020NN1 3BG: before 2020NN1 3BH: before 2020NN1 3BJ: before 2020NN1 3BL: before 2020NN1 3BN: before 2020NN1 3BP: before 2020NN1 3BQ: before 2020NN1 3BU: before 2020NN1 3BW: before 2020NN1 3BY: before 2020NN1 3DA: before 2020NN1 3DE: before 2020NN1 3DJ: before 2020NN1 3DL: before 2020NN1 3DN: before 2020NN1 3DP: before 2020NN1 3DS: before 2020NN1 3DX: before 2020NN1 3DY: before 2020NN1 3DZ: before 2020NN1 3EA: before 2020NN1 3EB: before 2020NN1 3EE: before 2020NN1 3EL: before 2020NN1 3EN: before 2020NN1 3EP: before 2020NN1 3ER: before 2020NN1 3ES: before 2020NN1 3ET: before 2020NN1 3EU: before 2020NN1 3EW: before 2020NN1 3EX: before 2020NN1 3EY: before 2020NN1 3EZ: before 2020NN1 3FB: before 2020NN1 3HB: before 2020NN1 3HD: before 2020NN1 3HE: before 2020NN1 3HH: before 2020NN1 3HQ: before 2020NN1 3HS: before 2020NN1 3HW: before 2020NN1 3HX: before 2020NN1 3JA: before 2020NN1 3JD: before 2020NN1 3JE: before 2020NN1 3JF: before 2020NN1 3JG: before 2020NN1 3JH: before 2020NN1 3JL: before 2020NN1 3JQ: before 2020NN1 3JS: before 2020NN1 3JT: before 2020NN1 3JU: before 2020NN1 3JW: before 2020NN1 3JX: before 2020NN1 3JY: before 2020NN1 3LB: before 2020NN1 3LD: before 2020NN1 3LE: before 2020NN1 3LF: before 2020NN1 3LG: before 2020NN1 3LH: before 2020NN1 3LJ: before 2020NN1 3LL: before 2020NN1 3LN: before 2020NN1 3LP: before 2020NN1 3LQ: before 2020NN1 3LR: before 2020NN1 3LS: before 2020NN1 3LW: before 2020NN1 3LZ: before 2020NN1 3NA: before 2020NN1 3NE: before 2020NN1 3NL: before 2020NN1 3NR: before 2020NN1 3PU: before 2020NN1 3PX: before 2020NN1 3PZ: before 2020NN1 3QA: before 2020NN1 3QB: before 2020NN1 3QD: before 2020NN1 3QE: before 2020NN1 3QF: before 2020NN1 3QG: before 2020NN1 3QJ: before 2020NN1 3QL: before 2020NN1 3QN: before 2020NN1 3QP: before 2020NN1 3QQ: before 2020NN1 3QR: before 2020NN1 3QS: before 2020NN1 3QT: before 2020NN1 3QU: before 2020NN1 3QW: before 2020NN1 3QX: before 2020NN1 3RE: before 2020NN1 3RF: before 2020NN1 3RJ: before 2020NN1 3RL: before 2020NN1 3RN: before 2020NN1 3RP: before 2020NN1 3RR: before 2020NN1 3RS: before 2020NN1 3DQ: new since 2020NN1 3JZ: new since 2020NN1 3LU: new since 2020NN1 3LX: new since 2020 Northampton 6 new postcodes since 2020, outlined: this goes to NN1 3DQ, the newest of them6 new postcodes since 2020 Map of every postcode in the NN1 3 sector, by new since 2020 Of the 121 postcodes in the NN1 3 sector that ONS places, 6 are new since 2020 and 115 were in use before 2020. One group of new postcodes is outlined: 6 new postcodes since 2020. Places named: Northampton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Northampton 6 new postcodes since 2020, outlined: this goes to NN1 3DQ, the newest of them6 new postcodes since 2020
  • New since 2020: 6
  • In use before 2020: 115
  • Outline: where 5 or more new postcodes since 2020 lie together

Of the 121 postcodes in the NN1 3 sector that ONS places, 6 are new since 2020 and 115 were in use before 2020.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. New since 2020 means it came into use in January 2020 or later. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and no boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; when each came into use: the same directory; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

The 5 newest postcodes

NN1 3DQSeptember 2024NN1 3DRSeptember 2024NN1 3LUAugust 2024NN1 3JZMarch 2024NN1 3LAMarch 2024

Where the new postcodes lie together

  • 6 new postcodes since 2020, outlined on the map. NN1 3DQ, is the newest of them.

What do homes sell for in NN1 3?

Homes in NN1 3 sold for a typical £180,000 in the 12 months to August 2026, across 42 sales, no change on the 12 months before, HM Land Registry's figures show.

£180,000 typical price, the 12 months to August 2026
£180,000 12 months to August 2025
■ no change on the 12 months before
  • Terraced £200,000 30 sales
  • Flat or maisonette £131,500 12 sales

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value at the postcodes that start NN1 3. A typical price is the median, the middle sale, given from 5 sales or more.

How we work this out: house prices by postcode

Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it

Postcodes in NN1 3

Pick a postcode to see its council and MP, broadband, flood risk, what homes sell for, council tax, the nearest schools and stations, and crime around it.

NN1 3AENN1 3AHNN1 3ASNN1 3AUNN1 3AXNN1 3BANN1 3BENN1 3BGNN1 3BHNN1 3BJNN1 3BLNN1 3BNNN1 3BPNN1 3BQNN1 3BUNN1 3BWNN1 3BYNN1 3DANN1 3DENN1 3DJNN1 3DLNN1 3DNNN1 3DPNN1 3DQNN1 3DRNN1 3DSNN1 3DXNN1 3DYNN1 3DZNN1 3EANN1 3EBNN1 3EENN1 3ELNN1 3ENNN1 3EPNN1 3ERNN1 3ESNN1 3ETNN1 3EUNN1 3EWNN1 3EXNN1 3EYNN1 3EZNN1 3FBNN1 3HBNN1 3HDNN1 3HENN1 3HHNN1 3HQNN1 3HSNN1 3HWNN1 3HXNN1 3JANN1 3JDNN1 3JENN1 3JFNN1 3JGNN1 3JHNN1 3JLNN1 3JQNN1 3JSNN1 3JTNN1 3JUNN1 3JWNN1 3JXNN1 3JYNN1 3JZNN1 3LANN1 3LBNN1 3LDNN1 3LENN1 3LFNN1 3LGNN1 3LHNN1 3LJNN1 3LLNN1 3LNNN1 3LPNN1 3LQNN1 3LRNN1 3LSNN1 3LTNN1 3LUNN1 3LWNN1 3LXNN1 3LZNN1 3NANN1 3NBNN1 3NDNN1 3NENN1 3NLNN1 3NRNN1 3PUNN1 3PXNN1 3PZNN1 3QANN1 3QBNN1 3QDNN1 3QENN1 3QFNN1 3QGNN1 3QJNN1 3QLNN1 3QNNN1 3QPNN1 3QQNN1 3QRNN1 3QSNN1 3QTNN1 3QUNN1 3QWNN1 3QXNN1 3RENN1 3RFNN1 3RJNN1 3RLNN1 3RNNN1 3RPNN1 3RQNN1 3RRNN1 3RS

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed. See all our data sources

What council am I in? The council, borough or local authority for a postcode, and the county council where there is one. What ward am I in? The ward for a postcode, with its council, constituency and parish.

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