#T1Gunnislake and St Ann's Chapel
3,506 peopleNo homes at high or medium flood risk·#43 of 2,452 in England, Scotland and Wales
Each edition grades its towns against each other only.
Gunnislake and St Ann's Chapel, #1 on this list · Photo: Jonathan Billinger · CC BY-SA 2.0Gunnislake and St Ann's Chapel and Threemilestone share first place on flood risk among Cornwall’s 35 towns of 2,500+; 2 of the 35 grade A− or better against UK towns.
In England and Wales the Hazard risk Grade measures flood risk: the share of the town’s homes at high or medium risk of flooding from rivers or the sea (Environment Agency, Natural Resources Wales). The rank across England, Scotland and Wales sits beside each letter. How grades work
#T1No homes at high or medium flood risk·#43 of 2,452 in England, Scotland and Wales
#T1No homes at high or medium flood risk·#43 of 2,452 in England, Scotland and Wales
#30.1% of homes at high or medium flood risk·#819 of 2,452 in England, Scotland and Wales
Flood risk grade, best first; ranks are the county ranks on each town’s page (T = tied). Military garrison towns and university campuses keep their grades but aren’t ranked. Each rank across England, Scotland and Wales links to the national list.
35 towns.
Gunnislake and St Ann's Chapel ranks first on flood risk among 35 towns, with an A: no homes at high or medium flood risk. Threemilestone and Probus follow.
In England and Wales the Hazard risk Grade measures flood risk: the share of the town’s homes at high or medium risk of flooding from rivers or the sea (Environment Agency, Natural Resources Wales). The letter and rank are the same as on each town’s page. How grades work.
Garrison towns and university campuses aren’t ranked, and towns without the figures this grade needs are counted above. The list covers Cornwall’s towns of 2,500+ with the figure. Smaller places show it on their own pages; every town in Cornwall is on the county page.
Every list ranks the same 2,500+ towns, so a town’s rank means the same thing on each.
Sources: Environment Agency Risk of Flooding from Rivers and Sea, postcodes in areas at risk (June 2026); Natural Resources Wales Flood Risk Assessment Wales (May 2026); ONS Census 2021 households by postcode · TownRatings grades: our own summary of the data, ranked against UK towns only. All under the Open Government Licence v3.0.
Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.