S21 4 postcode sector in the S21 district

S21 4 is a sector of the S21 district: every postcode that starts S21 4. It has 170 postcodes in use, one of them a large-user postcode. 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 S21 4 sector, and which are new since 2020

Map of every postcode in the S21 4 sector, by new since 2020 Of the 170 postcodes in the S21 4 sector that ONS places, 3 are new since 2020 and 167 were in use before 2020. 2 postcodes lie beyond the edge and are listed under the map. Places named: Eckington. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A6135 S21 4AA: before 2020S21 4AB: before 2020S21 4AD: before 2020S21 4AE: before 2020S21 4AF: before 2020S21 4AG: before 2020S21 4AH: before 2020S21 4AJ: before 2020S21 4AL: before 2020S21 4AN: before 2020S21 4AP: before 2020S21 4AQ: before 2020S21 4AR: before 2020S21 4AS: before 2020S21 4AT: before 2020S21 4AU: before 2020S21 4AW: before 2020S21 4AX: before 2020S21 4AY: before 2020S21 4AZ: before 2020S21 4BA: before 2020S21 4BB: before 2020S21 4BD: before 2020S21 4BE: before 2020S21 4BF: before 2020S21 4BG: before 2020S21 4BH: before 2020S21 4BJ: before 2020S21 4BL: before 2020S21 4BN: before 2020S21 4BP: before 2020S21 4BQ: before 2020S21 4BR: before 2020S21 4BS: before 2020S21 4BT: before 2020S21 4BU: before 2020S21 4BW: before 2020S21 4BX: before 2020S21 4BY: before 2020S21 4BZ: before 2020S21 4DA: before 2020S21 4DB: before 2020S21 4DD: before 2020S21 4DE: before 2020S21 4DF: before 2020S21 4DG: before 2020S21 4DH: before 2020S21 4DJ: before 2020S21 4DL: before 2020S21 4DN: before 2020S21 4DQ: before 2020S21 4DR: before 2020S21 4DS: before 2020S21 4DT: before 2020S21 4DU: before 2020S21 4DW: before 2020S21 4DX: before 2020S21 4DY: before 2020S21 4DZ: before 2020S21 4EA: before 2020S21 4EB: before 2020S21 4ED: before 2020S21 4EE: before 2020S21 4EF: before 2020S21 4EG: before 2020S21 4EH: before 2020S21 4EL: before 2020S21 4EN: before 2020S21 4EP: before 2020S21 4EQ: before 2020S21 4ES: before 2020S21 4ET: before 2020S21 4EU: before 2020S21 4EW: before 2020S21 4EX: before 2020S21 4EY: before 2020S21 4EZ: before 2020S21 4FA: before 2020S21 4FB: before 2020S21 4FD: before 2020S21 4FE: before 2020S21 4FF: before 2020S21 4FG: before 2020S21 4FH: before 2020S21 4FJ: before 2020S21 4FL: before 2020S21 4FN: before 2020S21 4FP: before 2020S21 4FQ: before 2020S21 4FR: before 2020S21 4FS: before 2020S21 4FT: before 2020S21 4FU: before 2020S21 4FW: before 2020S21 4FX: before 2020S21 4FY: before 2020S21 4FZ: before 2020S21 4GA: before 2020S21 4GB: before 2020S21 4GD: before 2020S21 4GE: before 2020S21 4GG: before 2020S21 4GJ: before 2020S21 4GL: before 2020S21 4GN: before 2020S21 4GP: before 2020S21 4GQ: before 2020S21 4GR: before 2020S21 4GS: before 2020S21 4GT: before 2020S21 4GU: before 2020S21 4GW: before 2020S21 4GX: before 2020S21 4GY: before 2020S21 4GZ: before 2020S21 4HA: before 2020S21 4HB: before 2020S21 4HD: before 2020S21 4HE: before 2020S21 4HF: before 2020S21 4HG: before 2020S21 4HH: before 2020S21 4HJ: before 2020S21 4HL: before 2020S21 4HN: before 2020S21 4HP: before 2020S21 4HQ: before 2020S21 4HR: before 2020S21 4HS: before 2020S21 4HT: before 2020S21 4HU: before 2020S21 4HW: before 2020S21 4HX: before 2020S21 4HY: before 2020S21 4HZ: before 2020S21 4JA: before 2020S21 4JB: before 2020S21 4JD: before 2020S21 4JE: before 2020S21 4JF: before 2020S21 4JG: before 2020S21 4JH: before 2020S21 4JJ: before 2020S21 4JL: before 2020S21 4JN: before 2020S21 4JR: before 2020S21 4JS: before 2020S21 4JT: before 2020S21 4JU: before 2020S21 4JW: before 2020S21 4JX: before 2020S21 4JY: before 2020S21 4JZ: before 2020S21 4LA: before 2020S21 4LB: before 2020S21 4LE: before 2020S21 4LF: before 2020S21 4LG: before 2020S21 4LH: before 2020S21 4LJ: before 2020S21 4LL: before 2020S21 4LN: before 2020S21 4LP: before 2020S21 4WZ: before 2020S21 4YF: before 2020S21 4LQ: new since 2020S21 4LS: new since 2020S21 4LT: new since 2020 Eckington Map of every postcode in the S21 4 sector, by new since 2020 Of the 170 postcodes in the S21 4 sector that ONS places, 3 are new since 2020 and 167 were in use before 2020. 2 postcodes lie beyond the edge and are listed under the map. Places named: Eckington. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Eckington
  • New since 2020: 3
  • In use before 2020: 167

Of the 170 postcodes in the S21 4 sector that ONS places, 3 are new since 2020 and 167 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. 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 3 newest postcodes

S21 4LTDecember 2024S21 4LSJuly 2023S21 4LQJanuary 2021

2 further out, not drawn

These postcodes lie well apart from the rest, so the map is drawn without them to show the rest closer; they are in every count.

S21 4EJS21 4GF

What do homes sell for in S21 4?

Homes in S21 4 sold for a typical £220,000 in the 12 months to August 2026, across 76 sales, up 18.9% on the 12 months before, HM Land Registry's figures show.

£220,000 typical price, the 12 months to August 2026
£185,000 12 months to August 2025
▲ up 18.9% on the 12 months before
  • Detached £331,500 30 sales
  • Semi-detached £177,500 23 sales
  • Terraced £163,500 19 sales
  • Flat or maisonette 4 sales, too few to price

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 S21 4. 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 S21 4

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.

S21 4AAS21 4ABS21 4ADS21 4AES21 4AFS21 4AGS21 4AHS21 4AJS21 4ALS21 4ANS21 4APS21 4AQS21 4ARS21 4ASS21 4ATS21 4AUS21 4AWS21 4AXS21 4AYS21 4AZS21 4BAS21 4BBS21 4BDS21 4BES21 4BFS21 4BGS21 4BHS21 4BJS21 4BLS21 4BNS21 4BPS21 4BQS21 4BRS21 4BSS21 4BTS21 4BUS21 4BWS21 4BXS21 4BYS21 4BZS21 4DAS21 4DBS21 4DDS21 4DES21 4DFS21 4DGS21 4DHS21 4DJS21 4DLS21 4DNS21 4DQS21 4DRS21 4DSS21 4DTS21 4DUS21 4DWS21 4DXS21 4DYS21 4DZS21 4EAS21 4EBS21 4EDS21 4EES21 4EFS21 4EGS21 4EHS21 4EJS21 4ELS21 4ENS21 4EPS21 4EQS21 4ESS21 4ETS21 4EUS21 4EWS21 4EXS21 4EYS21 4EZS21 4FAS21 4FBS21 4FDS21 4FES21 4FFS21 4FGS21 4FHS21 4FJS21 4FLS21 4FNS21 4FPS21 4FQS21 4FRS21 4FSS21 4FTS21 4FUS21 4FWS21 4FXS21 4FYS21 4FZS21 4GAS21 4GBS21 4GDS21 4GES21 4GFS21 4GGS21 4GJS21 4GLS21 4GNS21 4GPS21 4GQS21 4GRS21 4GSS21 4GTS21 4GUS21 4GWS21 4GXS21 4GYS21 4GZS21 4HAS21 4HBS21 4HDS21 4HES21 4HFS21 4HGS21 4HHS21 4HJS21 4HLS21 4HNS21 4HPS21 4HQS21 4HRS21 4HSS21 4HTS21 4HUS21 4HWS21 4HXS21 4HYS21 4HZS21 4JAS21 4JBS21 4JDS21 4JES21 4JFS21 4JGS21 4JHS21 4JJS21 4JLS21 4JNS21 4JRS21 4JSS21 4JTS21 4JUS21 4JWS21 4JXS21 4JYS21 4JZS21 4LAS21 4LBS21 4LES21 4LFS21 4LGS21 4LHS21 4LJS21 4LLS21 4LNS21 4LPS21 4LQS21 4LSS21 4LTS21 4WZS21 4YF

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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