Postcodes in Windsor and Maidenhead page 8 Unitary Authority

This page provides postcode data for the Windsor and Maidenhead UK Unitary Authority.

In 2021, Windsor and Maidenhead contained approximately 60,900 households with a population of about 153,500

In 2011, Windsor and Maidenhead contained approximately 58,391 households with a population of about 144,662

Parishes in this Unitary Authority
Key Active postcodeActive postcode Postcode no longer in usePostcode no longer in use

Postcode Ward Latitude Longitude Easting Northing Grid ref
SL4 1YL Eton & Castle 51.481164 -0.610384 496594 176716 SU965767
SL4 1YN Eton & Castle 51.480069 -0.605997 496901 176600 SU969766
SL4 1YP Eton & Castle 51.480982 -0.610937 496556 176695 SU965766
SL4 1YQ Eton & Castle 51.480069 -0.605997 496901 176600 SU969766
SL4 1YR Eton & Castle 51.48099 -0.610922 496557 176696 SU965766
SL4 1YS Eton & Castle 51.48099 -0.610922 496557 176696 SU965766
SL4 1YT Eton & Castle 51.481164 -0.610384 496594 176716 SU965767
SL4 1YU Eton & Castle 51.480982 -0.610937 496556 176695 SU965766
SL4 1YW Eton & Castle 51.48099 -0.610922 496557 176696 SU965766
SL4 1YX Eton & Castle 51.481164 -0.610384 496594 176716 SU965767
SL4 1ZG Eton & Castle 51.481164 -0.610384 496594 176716 SU965767
SL4 1ZJ Eton & Castle 51.481164 -0.610384 496594 176716 SU965767
SL4 1ZN Eton & Castle 51.481164 -0.610384 496594 176716 SU965767
SL4 1ZQ Eton & Castle 51.481164 -0.610384 496594 176716 SU965767
SL4 2AA Eton & Castle 51.478465 -0.605714 496924 176422 SU969764
SL4 2AB Eton & Castle 51.478122 -0.605595 496933 176384 SU969763
SL4 2AD Eton & Castle 51.477317 -0.605951 496910 176294 SU969762
SL4 2AE Eton & Castle 51.472878 -0.606216 496901 175800 SU969758
SL4 2AF Old Windsor 51.461233 -0.587497 498226 174530 SU982745
SL4 2AG Eton & Castle 51.477384 -0.606366 496881 176301 SU968763
SL4 2AH Eton & Castle 51.475483 -0.606021 496909 176090 SU969760
SL4 2AJ Eton & Castle 51.476029 -0.607329 496817 176149 SU968761
SL4 2AL Eton & Castle 51.47508 -0.606149 496901 176045 SU969760
SL4 2AN Eton & Castle 51.474285 -0.606562 496874 175956 SU968759
SL4 2AP Eton & Castle 51.474256 -0.60567 496936 175954 SU969759
SL4 2AQ Eton & Castle 51.476472 -0.607517 496803 176198 SU968761
SL4 2AR Eton & Castle 51.473469 -0.605996 496915 175866 SU969758
SL4 2AS Eton & Castle 51.473065 -0.606109 496908 175821 SU969758
SL4 2AT Old Windsor 51.471996 -0.607683 496801 175700 SU968757
SL4 2AU Old Windsor 51.471097 -0.60771 496801 175600 SU968756
SL4 2AW Eton & Castle 51.475055 -0.6071 496835 176041 SU968760
SL4 2AX Old Windsor 51.471486 -0.607914 496786 175643 SU967756
SL4 2AY Old Windsor 51.47109 -0.607163 496839 175600 SU968756
SL4 2AZ Old Windsor 51.469888 -0.608121 496775 175465 SU967754
SL4 2BA Old Windsor 51.466537 -0.610699 496603 175089 SU966750
SL4 2BB Old Windsor 51.466127 -0.611719 496533 175042 SU965750
SL4 2BD Old Windsor 51.465696 -0.612553 496476 174993 SU964749
SL4 2BE Old Windsor 51.469704 -0.610056 496641 175442 SU966754
SL4 2BF Old Windsor 51.456843 -0.576937 498969 174056 SU989740
SL4 2BG Old Windsor 51.466875 -0.611855 496522 175125 SU965751
SL4 2BH Ascot & Sunninghill 51.430465 -0.66929 492606 171002 SU926710
SL4 2BJ Old Windsor 51.467699 -0.613903 496378 175214 SU963752
SL4 2BL Ascot & Sunninghill 51.428265 -0.668721 492650 170758 SU926707
SL4 2BQ Old Windsor 51.4662 -0.612595 496472 175049 SU964750
SL4 2BS Old Windsor 51.450435 -0.629292 495345 173274 SU953732
SL4 2BT Old Windsor 51.445215 -0.637348 494796 172683 SU947726
SL4 2BU Old Windsor 51.442992 -0.637199 494811 172436 SU948724
SL4 2BY Old Windsor 51.443341 -0.640929 494551 172470 SU945724
SL4 2BZ Old Windsor 51.443696 -0.642099 494469 172508 SU944725
SL4 2DT Ascot & Sunninghill 51.430921 -0.672168 492405 171049 SU924710
SL4 2DU Ascot & Sunninghill 51.428677 -0.668594 492658 170804 SU926708
SL4 2DY Ascot & Sunninghill 51.429482 -0.668974 492630 170893 SU926708
SL4 2EJ Old Windsor 51.467911 -0.613551 496402 175238 SU964752
SL4 2ER Eton & Castle 51.481164 -0.610384 496594 176716 SU965767
SL4 2FB Old Windsor 51.455859 -0.575888 499044 173948 SU990739
SL4 2FD Old Windsor 51.460635 -0.5856 498359 174466 SU983744
SL4 2FE Old Windsor 51.469928 -0.594154 497745 175488 SU977754
SL4 2FF Old Windsor 51.466598 -0.586453 498287 175128 SU982751
SL4 2GA Old Windsor 51.455709 -0.584256 498463 173920 SU984739
SL4 2HD Old Windsor 51.442198 -0.622359 495844 172367 SU958723
SL4 2HH Old Windsor 51.469765 -0.606095 496916 175454 SU969754
SL4 2HJ Old Windsor 51.467379 -0.598321 497461 175199 SU974751
SL4 2HL Old Windsor 51.450577 -0.589696 498096 173342 SU980733
SL4 2HN Old Windsor 51.453535 -0.594196 497777 173665 SU977736
SL4 2HP Old Windsor 51.433841 -0.607633 496885 171457 SU968714
SL4 2HR Old Windsor 51.434601 -0.621724 495904 171523 SU959715
SL4 2HS Old Windsor 51.442802 -0.62706 495516 172428 SU955724
SL4 2HT Old Windsor 51.443343 -0.628742 495398 172486 SU953724
SL4 2HU Old Windsor 51.443327 -0.625836 495600 172488 SU956724
SL4 2HW Old Windsor 51.440046 -0.598653 497496 172159 SU974721
SL4 2HX Old Windsor 51.442313 -0.623708 495750 172378 SU957723
SL4 2HY Old Windsor 51.441519 -0.622739 495819 172291 SU958722
SL4 2HZ Old Windsor 51.442311 -0.628154 495441 172372 SU954723
SL4 2JA Old Windsor 51.451563 -0.628107 495425 173401 SU954734
SL4 2JD Old Windsor 51.434182 -0.60909 496783 171493 SU967714
SL4 2JE Old Windsor 51.454848 -0.602447 497201 173800 SU972738
SL4 2JF Eton & Castle 51.481164 -0.610384 496594 176716 SU965767
SL4 2JG Old Windsor 51.474301 -0.594351 497722 175974 SU977759
SL4 2JH Old Windsor 51.461179 -0.593487 497810 174516 SU978745
SL4 2JJ Old Windsor 51.450267 -0.573069 499252 173330 SU992733
SL4 2JL Old Windsor 51.455026 -0.574691 499129 173857 SU991738
SL4 2JP Old Windsor 51.449645 -0.57588 499058 173257 SU990732
SL4 2JQ Old Windsor 51.474467 -0.591739 497903 175996 SU979759
SL4 2JR Old Windsor 51.463978 -0.577248 498932 174849 SU989748
SL4 2JS Old Windsor 51.466483 -0.573254 499204 175133 SU992751
SL4 2JT Old Windsor 51.468012 -0.574761 499096 175301 SU990753
SL4 2JU Old Windsor 51.46746 -0.570013 499427 175246 SU994752
SL4 2JW Old Windsor 51.462289 -0.57373 499180 174666 SU991746
SL4 2JX Old Windsor 51.461893 -0.572188 499288 174624 SU992746
SL4 2JY Old Windsor 51.465005 -0.569298 499482 174974 SU994749
SL4 2JZ Old Windsor 51.46384 -0.568874 499514 174845 SU995748
SL4 2LA Old Windsor 51.464546 -0.58404 498459 174903 SU984749
SL4 2LB Eton & Castle 51.47822 -0.606312 496883 176394 SU968763
SL4 2LD Old Windsor 51.459338 -0.637029 494789 174254 SU947742
SL4 2LE Old Windsor 51.451857 -0.578071 498901 173500 SU989735
SL4 2LF Old Windsor 51.452633 -0.576089 499037 173589 SU990735
SL4 2LG Old Windsor 51.455716 -0.58558 498371 173919 SU983739
SL4 2LH Old Windsor 51.45372 -0.581885 498632 173702 SU986737
SL4 2LJ Old Windsor 51.454171 -0.581266 498674 173753 SU986737
SL4 2LL Old Windsor 51.451585 -0.580871 498707 173466 SU987734
Contains OS data © Crown copyright and database right 2025
Contains Royal Mail data © Royal Mail copyright and database right 2025
Contains National Statistics data © Crown copyright and database rights 2025
Source: Office for National Statistics licensed under the Open Government Licence v.3.0
Contains data from Wikipedia covered by the Creative Commons license