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Does YO1 flood?

Yes — parts of the YO1 district carry real flood risk: 50 of its 124 at-risk postcodes reach the Environment Agency's High likelihood band. The YO1 postcode district covers Guildhall, Micklegate, close to York Castle Mills Sluices, York, York Foss Barrier, and surrounding villages in parts of York and North Yorkshire.

124 postcodes in the YO1 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 50 high, 56 medium, 16 low, 2 very low. A postcode not listed here has no properties in any recorded risk band (which is good news, but never proof it cannot flood).

Free preview first · full report £19

Which YO1 postcodes are at risk?

YO1 6BE up to High YO1 6DB up to High YO1 6DD up to High YO1 6DG up to High YO1 6DH up to High YO1 6DP up to High YO1 6DQ up to High YO1 6DS up to High YO1 6DT up to High YO1 6DW up to High YO1 6DX up to High YO1 6FA up to High YO1 6FZ up to High YO1 6HH up to High YO1 6HU up to High YO1 6HZ up to High YO1 6JB up to High YO1 6JD up to High YO1 6JF up to High YO1 6JQ up to High YO1 6LT up to High YO1 6WN up to High YO1 7AE up to High YO1 7DP up to High YO1 7DR up to High YO1 7FR up to High YO1 7ND up to High YO1 9QL up to High YO1 9QU up to High YO1 9QX up to High YO1 9RE up to High YO1 9RF up to High YO1 9RS up to High YO1 9RZ up to High YO1 9SA up to High YO1 9SF up to High YO1 9SH up to High YO1 9SJ up to High YO1 9SL up to High YO1 9SN up to High YO1 9SP up to High YO1 9SR up to High YO1 9SW up to High YO1 9TB up to High YO1 9TF up to High YO1 9TJ up to High YO1 9TN up to High YO1 9UL up to High YO1 9WJ up to High YO1 9WP up to High YO1 6DA up to Medium YO1 6GD up to Medium YO1 6HJ up to Medium YO1 6JG up to Medium YO1 6JH up to Medium YO1 6WG up to Medium YO1 7AF up to Medium YO1 7DJ up to Medium YO1 7NA up to Medium YO1 7NB up to Medium YO1 7NE up to Medium YO1 7NF up to Medium YO1 7NG up to Medium YO1 7NP up to Medium YO1 7NT up to Medium YO1 7NY up to Medium YO1 7PB up to Medium YO1 7PD up to Medium YO1 7PE up to Medium YO1 7PR up to Medium YO1 7PW up to Medium YO1 9AA up to Medium YO1 9AE up to Medium YO1 9AF up to Medium YO1 9AG up to Medium YO1 9NX up to Medium YO1 9PA up to Medium YO1 9PB up to Medium YO1 9PD up to Medium YO1 9PG up to Medium YO1 9PN up to Medium YO1 9PP up to Medium YO1 9QD up to Medium YO1 9QJ up to Medium YO1 9SE up to Medium YO1 9SG up to Medium YO1 9ST up to Medium YO1 9SU up to Medium YO1 9SX up to Medium YO1 9SY up to Medium YO1 9SZ up to Medium YO1 9TA up to Medium YO1 9TL up to Medium YO1 9TT up to Medium YO1 9TU up to Medium YO1 9TX up to Medium YO1 9UH up to Medium YO1 9UJ up to Medium YO1 9UQ up to Medium YO1 9UR up to Medium YO1 9US up to Medium YO1 9WB up to Medium YO1 9WE up to Medium YO1 9XA up to Medium YO1 9XD up to Medium YO1 9XF up to Medium YO1 6JL up to Low YO1 6JP up to Low YO1 6LP up to Low YO1 6WR up to Low YO1 9AD up to Low YO1 9PL up to Low YO1 9QA up to Low YO1 9QT up to Low YO1 9RD up to Low YO1 9RG up to Low YO1 9RH up to Low YO1 9RJ up to Low YO1 9SB up to Low YO1 9SQ up to Low YO1 9WL up to Low YO1 9WY up to Low YO1 8AU up to Very low YO1 9QN up to Very low

Rivers and flooding history near YO1

The rivers that matter here, each monitored live on FloodRadar:

590 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (390 at warning level or above), most recently 26 March 2026. Warnings cover flood areas, not individual addresses.

Recorded flood extents near the district (Environment Agency record):

🏠 Buying or renting in YO1? The full property flood-risk report covers any postcode here — the official likelihood band, every recorded flood nearby with distances, warning history year by year, how the local rivers behave, and an insurance outlook, print-ready for £19. See what's in the report →

Flood risk in nearby postcode districts

YO4 YO7 YO8 YO10 YO11 YO12 YO13 YO14

Band = the worst likelihood band of any property in that postcode (EA Risk of Flooding from Rivers & Sea, defence-adjusted, area-level). Check any postcode in detail — or get the full £19 property report — at the property flood-risk report. © Environment Agency copyright and/or database right 2025. All rights reserved. Some features of this map are based on digital spatial data from the Centre for Ecology & Hydrology, © NERC (CEH). © Crown Copyright and Database Rights 2025 OS AC0000807064. This product is produced in part from PAF® and Multiple Residence Data, the copyright in which is owned by Royal Mail Group Limited and/or Royal Mail Group plc. All rights reserved. Licence number AC0000807064.