N21 1 postcode sector in the N21 district

N21 1 is a sector of the N21 district: every postcode that starts N21 1. It has 214 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 N21 1 sector, by flood risk

Map of every postcode in the N21 1 sector, by flood risk Of the 214 postcodes in the N21 1 sector that ONS places, 1 have a home or business at high risk, 3 are at medium risk at worst, 8 are at low risk at worst, 2 are at very low risk only and 200 are not on the Environment Agency's at-risk list. Places named: Southgate, Grange Park. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. N21 1AA: not on the flood risk listN21 1AB: not on the flood risk listN21 1AD: not on the flood risk listN21 1AE: not on the flood risk listN21 1AF: not on the flood risk listN21 1AG: not on the flood risk listN21 1AH: not on the flood risk listN21 1AL: not on the flood risk listN21 1AQ: not on the flood risk listN21 1AT: not on the flood risk listN21 1AU: not on the flood risk listN21 1AW: not on the flood risk listN21 1AX: not on the flood risk listN21 1AY: not on the flood risk listN21 1AZ: not on the flood risk listN21 1BA: not on the flood risk listN21 1BB: not on the flood risk listN21 1BD: not on the flood risk listN21 1BE: not on the flood risk listN21 1BG: not on the flood risk listN21 1BH: not on the flood risk listN21 1BJ: not on the flood risk listN21 1BL: not on the flood risk listN21 1BN: not on the flood risk listN21 1BP: not on the flood risk listN21 1BS: not on the flood risk listN21 1BU: not on the flood risk listN21 1DA: not on the flood risk listN21 1DB: not on the flood risk listN21 1DE: not on the flood risk listN21 1DG: not on the flood risk listN21 1DH: not on the flood risk listN21 1DJ: not on the flood risk listN21 1DL: not on the flood risk listN21 1DN: not on the flood risk listN21 1DP: not on the flood risk listN21 1DR: not on the flood risk listN21 1DS: not on the flood risk listN21 1DT: not on the flood risk listN21 1DU: not on the flood risk listN21 1DX: not on the flood risk listN21 1DY: not on the flood risk listN21 1EA: not on the flood risk listN21 1EB: not on the flood risk listN21 1EG: not on the flood risk listN21 1EH: not on the flood risk listN21 1EJ: not on the flood risk listN21 1EN: not on the flood risk listN21 1EP: not on the flood risk listN21 1EQ: not on the flood risk listN21 1ER: not on the flood risk listN21 1ES: not on the flood risk listN21 1ET: not on the flood risk listN21 1EU: not on the flood risk listN21 1EX: not on the flood risk listN21 1EY: not on the flood risk listN21 1GR: not on the flood risk listN21 1HA: not on the flood risk listN21 1HB: not on the flood risk listN21 1HD: not on the flood risk listN21 1HE: not on the flood risk listN21 1HG: not on the flood risk listN21 1HH: not on the flood risk listN21 1HJ: not on the flood risk listN21 1HL: not on the flood risk listN21 1HR: not on the flood risk listN21 1HS: not on the flood risk listN21 1HT: not on the flood risk listN21 1HU: not on the flood risk listN21 1HX: not on the flood risk listN21 1HY: not on the flood risk listN21 1HZ: not on the flood risk listN21 1JB: not on the flood risk listN21 1JD: not on the flood risk listN21 1JE: not on the flood risk listN21 1JF: not on the flood risk listN21 1JG: not on the flood risk listN21 1JH: not on the flood risk listN21 1JJ: not on the flood risk listN21 1JL: not on the flood risk listN21 1JP: not on the flood risk listN21 1JQ: not on the flood risk listN21 1JR: not on the flood risk listN21 1JS: not on the flood risk listN21 1JT: not on the flood risk listN21 1JU: not on the flood risk listN21 1JX: not on the flood risk listN21 1LD: not on the flood risk listN21 1LE: not on the flood risk listN21 1LG: not on the flood risk listN21 1LH: not on the flood risk listN21 1LJ: not on the flood risk listN21 1LL: not on the flood risk listN21 1LP: not on the flood risk listN21 1LR: not on the flood risk listN21 1LS: not on the flood risk listN21 1LT: not on the flood risk listN21 1LW: not on the flood risk listN21 1LZ: not on the flood risk listN21 1NB: not on the flood risk listN21 1ND: not on the flood risk listN21 1NE: not on the flood risk listN21 1NG: not on the flood risk listN21 1NJ: not on the flood risk listN21 1NL: not on the flood risk listN21 1NN: not on the flood risk listN21 1NP: not on the flood risk listN21 1NR: not on the flood risk listN21 1NS: not on the flood risk listN21 1NT: not on the flood risk listN21 1NU: not on the flood risk listN21 1NX: not on the flood risk listN21 1NY: not on the flood risk listN21 1PA: not on the flood risk listN21 1PB: not on the flood risk listN21 1PD: not on the flood risk listN21 1PE: not on the flood risk listN21 1PG: not on the flood risk listN21 1PH: not on the flood risk listN21 1PJ: not on the flood risk listN21 1PP: not on the flood risk listN21 1PQ: not on the flood risk listN21 1PR: not on the flood risk listN21 1PS: not on the flood risk listN21 1QA: not on the flood risk listN21 1QB: not on the flood risk listN21 1QD: not on the flood risk listN21 1QE: not on the flood risk listN21 1QG: not on the flood risk listN21 1QH: not on the flood risk listN21 1QJ: not on the flood risk listN21 1QL: not on the flood risk listN21 1QN: not on the flood risk listN21 1QP: not on the flood risk listN21 1QQ: not on the flood risk listN21 1QR: not on the flood risk listN21 1QS: not on the flood risk listN21 1QT: not on the flood risk listN21 1QU: not on the flood risk listN21 1QX: not on the flood risk listN21 1RA: not on the flood risk listN21 1RD: not on the flood risk listN21 1RE: not on the flood risk listN21 1RG: not on the flood risk listN21 1RH: not on the flood risk listN21 1RJ: not on the flood risk listN21 1RL: not on the flood risk listN21 1RN: not on the flood risk listN21 1RR: not on the flood risk listN21 1RS: not on the flood risk listN21 1RT: not on the flood risk listN21 1RZ: not on the flood risk listN21 1SB: not on the flood risk listN21 1SF: not on the flood risk listN21 1SG: not on the flood risk listN21 1SH: not on the flood risk listN21 1SJ: not on the flood risk listN21 1SL: not on the flood risk listN21 1SN: not on the flood risk listN21 1SP: not on the flood risk listN21 1SQ: not on the flood risk listN21 1SR: not on the flood risk listN21 1SS: not on the flood risk listN21 1ST: not on the flood risk listN21 1SU: not on the flood risk listN21 1SW: not on the flood risk listN21 1SX: not on the flood risk listN21 1SY: not on the flood risk listN21 1SZ: not on the flood risk listN21 1TD: not on the flood risk listN21 1TE: not on the flood risk listN21 1TF: not on the flood risk listN21 1TG: not on the flood risk listN21 1TH: not on the flood risk listN21 1TJ: not on the flood risk listN21 1TL: not on the flood risk listN21 1TN: not on the flood risk listN21 1TP: not on the flood risk listN21 1TQ: not on the flood risk listN21 1TR: not on the flood risk listN21 1TS: not on the flood risk listN21 1TT: not on the flood risk listN21 1TW: not on the flood risk listN21 1TX: not on the flood risk listN21 1TY: not on the flood risk listN21 1TZ: not on the flood risk listN21 1UA: not on the flood risk listN21 1UB: not on the flood risk listN21 1UD: not on the flood risk listN21 1UE: not on the flood risk listN21 1UF: not on the flood risk listN21 1UG: not on the flood risk listN21 1UH: not on the flood risk listN21 1UJ: not on the flood risk listN21 1UL: not on the flood risk listN21 1UZ: not on the flood risk listN21 1DF: very low flood risk onlyN21 1RF: very low flood risk onlyN21 1AJ: low flood risk at worstN21 1AN: low flood risk at worstN21 1AP: low flood risk at worstN21 1AR: low flood risk at worstN21 1DD: low flood risk at worstN21 1EL: low flood risk at worstN21 1JA: low flood risk at worstN21 1LN: low flood risk at worstN21 1AS: medium flood risk at worstN21 1LX: medium flood risk at worstN21 1LY: medium flood risk at worstN21 1LU: high flood risk SouthgateGrange Park Map of every postcode in the N21 1 sector, by flood risk Of the 214 postcodes in the N21 1 sector that ONS places, 1 have a home or business at high risk, 3 are at medium risk at worst, 8 are at low risk at worst, 2 are at very low risk only and 200 are not on the Environment Agency's at-risk list. Places named: Southgate, Grange Park. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. SouthgateGrange Park
  • A home or business at high risk: 1
  • At medium risk at worst: 3
  • At low risk at worst: 8
  • At very low risk only: 2
  • Not on the at-risk list: 200

Of the 214 postcodes in the N21 1 sector that ONS places, 1 have a home or business at high risk, 3 are at medium risk at worst, 8 are at low risk at worst, 2 are at very low risk only and 200 are not on the Environment Agency's at-risk list.

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. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode. Names in italics are council wards: we hold no town or village names here.

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; flood risk: Environment Agency, published 6 July 2026; 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 postcodes at high risk

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

N21 1LU1 at high risk

What do homes sell for in N21 1?

Homes in N21 1 sold for a typical £648,000 in the 12 months to August 2026, across 78 sales, down 0.3% on the 12 months before, HM Land Registry's figures show.

£648,000 typical price, the 12 months to August 2026
£650,000 12 months to August 2025
▼ down 0.3% on the 12 months before
  • Detached £900,000 9 sales
  • Semi-detached £922,500 24 sales
  • Terraced £802,500 10 sales
  • Flat or maisonette £370,000 35 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 N21 1. 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 N21 1

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.

N21 1AAN21 1ABN21 1ADN21 1AEN21 1AFN21 1AGN21 1AHN21 1AJN21 1ALN21 1ANN21 1APN21 1AQN21 1ARN21 1ASN21 1ATN21 1AUN21 1AWN21 1AXN21 1AYN21 1AZN21 1BAN21 1BBN21 1BDN21 1BEN21 1BGN21 1BHN21 1BJN21 1BLN21 1BNN21 1BPN21 1BSN21 1BUN21 1DAN21 1DBN21 1DDN21 1DEN21 1DFN21 1DGN21 1DHN21 1DJN21 1DLN21 1DNN21 1DPN21 1DRN21 1DSN21 1DTN21 1DUN21 1DXN21 1DYN21 1EAN21 1EBN21 1EGN21 1EHN21 1EJN21 1ELN21 1ENN21 1EPN21 1EQN21 1ERN21 1ESN21 1ETN21 1EUN21 1EXN21 1EYN21 1GRN21 1HAN21 1HBN21 1HDN21 1HEN21 1HGN21 1HHN21 1HJN21 1HLN21 1HRN21 1HSN21 1HTN21 1HUN21 1HXN21 1HYN21 1HZN21 1JAN21 1JBN21 1JDN21 1JEN21 1JFN21 1JGN21 1JHN21 1JJN21 1JLN21 1JPN21 1JQN21 1JRN21 1JSN21 1JTN21 1JUN21 1JXN21 1LDN21 1LEN21 1LGN21 1LHN21 1LJN21 1LLN21 1LNN21 1LPN21 1LRN21 1LSN21 1LTN21 1LUN21 1LWN21 1LXN21 1LYN21 1LZN21 1NBN21 1NDN21 1NEN21 1NGN21 1NJN21 1NLN21 1NNN21 1NPN21 1NRN21 1NSN21 1NTN21 1NUN21 1NXN21 1NYN21 1PAN21 1PBN21 1PDN21 1PEN21 1PGN21 1PHN21 1PJN21 1PPN21 1PQN21 1PRN21 1PSN21 1QAN21 1QBN21 1QDN21 1QEN21 1QGN21 1QHN21 1QJN21 1QLN21 1QNN21 1QPN21 1QQN21 1QRN21 1QSN21 1QTN21 1QUN21 1QXN21 1RAN21 1RDN21 1REN21 1RFN21 1RGN21 1RHN21 1RJN21 1RLN21 1RNN21 1RRN21 1RSN21 1RTN21 1RZN21 1SBN21 1SFN21 1SGN21 1SHN21 1SJN21 1SLN21 1SNN21 1SPN21 1SQN21 1SRN21 1SSN21 1STN21 1SUN21 1SWN21 1SXN21 1SYN21 1SZN21 1TBN21 1TDN21 1TEN21 1TFN21 1TGN21 1THN21 1TJN21 1TLN21 1TNN21 1TPN21 1TQN21 1TRN21 1TSN21 1TTN21 1TUN21 1TWN21 1TXN21 1TYN21 1TZN21 1UAN21 1UBN21 1UDN21 1UEN21 1UFN21 1UGN21 1UHN21 1UJN21 1ULN21 1UZN21 1XPN21 1YW

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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