MK46 4 postcode sector in the MK46 district

MK46 4 is a sector of the MK46 district: every postcode that starts MK46 4. It has 114 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 MK46 4 sector, by flood risk

Map of every postcode in the MK46 4 sector, by flood risk Of the 114 postcodes in the MK46 4 sector that ONS places, 7 have a home or business at high risk, 3 are at medium risk at worst, 2 are at low risk at worst and 102 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 5 postcodes at high or medium risk. Places named: Olney & Rural. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A428A509 MK46 4AA: not on the flood risk listMK46 4AB: not on the flood risk listMK46 4AE: not on the flood risk listMK46 4AF: not on the flood risk listMK46 4AJ: not on the flood risk listMK46 4AL: not on the flood risk listMK46 4AN: not on the flood risk listMK46 4AP: not on the flood risk listMK46 4AR: not on the flood risk listMK46 4AT: not on the flood risk listMK46 4AU: not on the flood risk listMK46 4AW: not on the flood risk listMK46 4AZ: not on the flood risk listMK46 4BA: not on the flood risk listMK46 4BB: not on the flood risk listMK46 4BE: not on the flood risk listMK46 4BG: not on the flood risk listMK46 4BH: not on the flood risk listMK46 4BJ: not on the flood risk listMK46 4BL: not on the flood risk listMK46 4BP: not on the flood risk listMK46 4BS: not on the flood risk listMK46 4BT: not on the flood risk listMK46 4BU: not on the flood risk listMK46 4BW: not on the flood risk listMK46 4DA: not on the flood risk listMK46 4DB: not on the flood risk listMK46 4DD: not on the flood risk listMK46 4DE: not on the flood risk listMK46 4DG: not on the flood risk listMK46 4DH: not on the flood risk listMK46 4DL: not on the flood risk listMK46 4DN: not on the flood risk listMK46 4DP: not on the flood risk listMK46 4DQ: not on the flood risk listMK46 4DR: not on the flood risk listMK46 4DS: not on the flood risk listMK46 4DT: not on the flood risk listMK46 4DU: not on the flood risk listMK46 4DX: not on the flood risk listMK46 4DY: not on the flood risk listMK46 4DZ: not on the flood risk listMK46 4EA: not on the flood risk listMK46 4EB: not on the flood risk listMK46 4EF: not on the flood risk listMK46 4EG: not on the flood risk listMK46 4EH: not on the flood risk listMK46 4EL: not on the flood risk listMK46 4EN: not on the flood risk listMK46 4EP: not on the flood risk listMK46 4ER: not on the flood risk listMK46 4ES: not on the flood risk listMK46 4EX: not on the flood risk listMK46 4EZ: not on the flood risk listMK46 4FA: not on the flood risk listMK46 4FB: not on the flood risk listMK46 4FD: not on the flood risk listMK46 4FE: not on the flood risk listMK46 4FF: not on the flood risk listMK46 4FG: not on the flood risk listMK46 4FH: not on the flood risk listMK46 4FJ: not on the flood risk listMK46 4FL: not on the flood risk listMK46 4FN: not on the flood risk listMK46 4FP: not on the flood risk listMK46 4FQ: not on the flood risk listMK46 4FR: not on the flood risk listMK46 4FS: not on the flood risk listMK46 4FT: not on the flood risk listMK46 4FU: not on the flood risk listMK46 4HA: not on the flood risk listMK46 4HE: not on the flood risk listMK46 4HF: not on the flood risk listMK46 4HG: not on the flood risk listMK46 4HJ: not on the flood risk listMK46 4HL: not on the flood risk listMK46 4HP: not on the flood risk listMK46 4HQ: not on the flood risk listMK46 4HR: not on the flood risk listMK46 4HS: not on the flood risk listMK46 4HT: not on the flood risk listMK46 4HU: not on the flood risk listMK46 4HW: not on the flood risk listMK46 4HX: not on the flood risk listMK46 4HY: not on the flood risk listMK46 4JB: not on the flood risk listMK46 4JD: not on the flood risk listMK46 4JE: not on the flood risk listMK46 4JF: not on the flood risk listMK46 4JH: not on the flood risk listMK46 4JJ: not on the flood risk listMK46 4JL: not on the flood risk listMK46 4JP: not on the flood risk listMK46 4JQ: not on the flood risk listMK46 4JS: not on the flood risk listMK46 4JX: not on the flood risk listMK46 4JY: not on the flood risk listMK46 4HN: low flood risk at worstMK46 4JG: low flood risk at worstMK46 4EY: medium flood risk at worstMK46 4HB: medium flood risk at worstMK46 4JA: medium flood risk at worstMK46 4AD: high flood riskMK46 4DF: high flood riskMK46 4DW: high flood riskMK46 4EJ: high flood riskMK46 4ET: high flood riskMK46 4EU: high flood riskMK46 4HH: high flood risk Olney & Rural 5 postcodes at high or medium risk, outlined: this goes to MK46 4EU, the one with most homes and businesses at high risk5 postcodes at high or medium risk Map of every postcode in the MK46 4 sector, by flood risk Of the 114 postcodes in the MK46 4 sector that ONS places, 7 have a home or business at high risk, 3 are at medium risk at worst, 2 are at low risk at worst and 102 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 5 postcodes at high or medium risk. Places named: Olney & Rural. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A509 Olney & Rural
  • A home or business at high risk: 7
  • At medium risk at worst: 3
  • At low risk at worst: 2
  • At very low risk only: 0
  • Not on the at-risk list: 102
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 114 postcodes in the MK46 4 sector that ONS places, 7 have a home or business at high risk, 3 are at medium risk at worst, 2 are at low risk at worst and 102 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. 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. 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.

Where the postcodes at high or medium risk lie together

What do homes sell for in MK46 4?

Homes in MK46 4 sold for a typical £405,000 in the 12 months to August 2026, across 53 sales, up 9.5% on the 12 months before, HM Land Registry's figures show.

£405,000 typical price, the 12 months to August 2026
£370,000 12 months to August 2025
▲ up 9.5% on the 12 months before
  • Detached £552,500 19 sales
  • Semi-detached £406,250 12 sales
  • Terraced £333,250 12 sales
  • Flat or maisonette £277,500 10 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 MK46 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

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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