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St. Mary's church, Capel St. Mary, SuffolkCapel St Mary, #1 on this list · Photo: Robert Edwards · CC BY-SA 2.0
Suffolk rankings · Hazard risk

Towns with the lowest flood risk in Suffolk

Capel St Mary and Glemsford (tied with 5 more) share first place on flood risk among Suffolk’s 34 towns of 2,500+; 7 of the 34 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

#T1

Capel St Mary

2,992 people
A

No homes at high or medium flood risk·#43 of 2,452 in England, Scotland and Wales

#T1

Glemsford

3,693 people
A

No homes at high or medium flood risk·#43 of 2,452 in England, Scotland and Wales

#T1

Kesgrave

14,947 people
A

No homes at high or medium flood risk·#43 of 2,452 in England, Scotland and Wales

All 34 towns, ranked

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.

Every town in Suffolk →

34 towns.

#TownGrade · UK rankCompared with UK towns
T1Capel St Mary2,992 peopleA#43 of 2,452 nationallyno homes at high or medium flood risk
T1Glemsford3,693 peopleA#43 of 2,452 nationallyno homes at high or medium flood risk
T1Kesgrave14,947 peopleA#43 of 2,452 nationallyno homes at high or medium flood risk
T1Leiston5,919 peopleA#43 of 2,452 nationallyno homes at high or medium flood risk
T1Martlesham Heath2,730 peopleA#43 of 2,452 nationallyno homes at high or medium flood risk
T1Rendlesham3,185 peopleA#43 of 2,452 nationallyno homes at high or medium flood risk
T1Trimley St Mary3,736 peopleA#43 of 2,452 nationallyno homes at high or medium flood risk
8Kessingland4,242 peopleB+#560 of 2,452 nationallyno homes at high or medium flood risk
9Claydon3,140 peopleB+#583 of 2,452 nationallyno homes at high or medium flood risk
10Lakenheath4,567 peopleB+#630 of 2,452 nationallyno homes at high or medium flood risk
11Mildenhall9,684 peopleB+#649 of 2,452 nationallyno homes at high or medium flood risk
12Red Lodge5,771 peopleB#664 of 2,452 nationallyno homes at high or medium flood risk
13Elmswell4,446 peopleB#690 of 2,452 nationally0% of homes at high or medium flood risk
14Ipswich151,566 peopleB#715 of 2,452 nationally0% of homes at high or medium flood risk
15Brandon9,218 peopleB#721 of 2,452 nationally0% of homes at high or medium flood risk
16Haverhill26,704 peopleB#731 of 2,452 nationally0% of homes at high or medium flood risk
17Hadleigh8,638 peopleB#913 of 2,452 nationally0.1% of homes at high or medium flood risk
18Thurston3,009 peopleB#965 of 2,452 nationally0.1% of homes at high or medium flood risk
19Halesworth4,924 peopleB#976 of 2,452 nationally0.1% of homes at high or medium flood risk
20Felixstowe24,218 peopleB#980 of 2,452 nationally0.1% of homes at high or medium flood risk
21Worlingham3,618 peopleB#982 of 2,452 nationally0.1% of homes at high or medium flood risk
22Stowmarket21,537 peopleB−#1,027 of 2,452 nationally0.2% of homes at high or medium flood risk
23Sudbury23,922 peopleB−#1,042 of 2,452 nationally0.2% of homes at high or medium flood risk
24Saxmundham4,778 peopleB−#1,088 of 2,452 nationally0.2% of homes at high or medium flood risk
25Beck Row4,129 peopleB−#1,103 of 2,452 nationally0.2% of homes at high or medium flood risk
26Bungay5,012 peopleC+#1,240 of 2,452 nationally0.4% of homes at high or medium flood risk
27Bury St Edmunds41,279 peopleC#1,539 of 2,452 nationally0.9% of homes at high or medium flood risk
28Framlingham3,831 peopleC#1,747 of 2,452 nationally1.4% of homes at high or medium flood risk
29Long Melford3,895 peopleC#1,752 of 2,452 nationally1.4% of homes at high or medium flood risk
30Lowestoft71,308 peopleC−#1,989 of 2,452 nationally2.4% of homes at high or medium flood risk
31Beccles9,807 peopleD#2,124 of 2,452 nationally3.8% of homes at high or medium flood risk
32Woodbridge10,146 peopleD#2,213 of 2,452 nationally5.1% of homes at high or medium flood risk
33Needham Market5,055 peopleD#2,241 of 2,452 nationally5.6% of homes at high or medium flood risk
34Newmarket18,857 peopleD#2,289 of 2,452 nationally6.8% of homes at high or medium flood risk
Not ranked

Not on this list

1 military garrison town or university campus keeps its grade but isn’t ranked: most residents serve in the forces or are students.

Quick answers

Questions people ask

Which town in Suffolk has the lowest flood risk?

Capel St Mary ranks first on flood risk among 34 towns, with an A: no homes at high or medium flood risk. Glemsford and Kesgrave follow.

How are these towns ranked?

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.

Why isn’t my town on this list?

Garrison towns and university campuses aren’t ranked, and towns without the figures this grade needs are counted above. The list covers Suffolk’s towns of 2,500+ with the figure. Smaller places show it on their own pages; every town in Suffolk is on the county page.

Go deeper

More Suffolk lists

Every list ranks the same 2,500+ towns, so a town’s rank means the same thing on each.

All Suffolk rankings →
Best places to live34 towns · #1 KesgraveBest small towns24 towns · #1 Capel St MaryMost affordable towns34 towns · #1 KessinglandSafest towns34 towns · #1 WorlinghamTowns with the best schools34 towns · #1 GlemsfordHealthiest towns34 towns · #1 Capel St MaryBest towns for jobs & income34 towns · #1 Martlesham HeathMost walkable towns34 towns · #1 Bury St EdmundsBest towns for the outdoors34 towns · #1 Trimley St MaryMost historic towns34 towns · #1 Long MelfordTowns with the most civic life34 towns · #1 FramlinghamTowns with the highest household incomes35 towns · #1 ThurstonDescribed, no lettersTowns with the lowest council tax35 towns · #1 WorlinghamDescribed, no lettersTowns with the mildest winters35 towns · #1 Trimley St MaryDescribed, no lettersTowns with the warmest summers35 towns · #1 Beck RowDescribed, no lettersTowns with the coolest summers35 towns · #1 KessinglandDescribed, no lettersTowns with the fewest frosts35 towns · #1 Trimley St MaryDescribed, no lettersDriest towns35 towns · #1 FelixstoweDescribed, no lettersWettest towns35 towns · #1 SaxmundhamDescribed, no letters
County by county

Towns with the lowest flood risk, county by county

AberdeenshireBedfordshireBerkshireBuckinghamshireCambridgeshireCheshireClwydCornwallCounty DurhamCumbriaDerbyshireDevonDorsetDyfedEast Riding of YorkshireEast SussexEssexFifeGloucestershireGreater ManchesterGwentHampshireHertfordshireHighlandKentLancashireLeicestershireLincolnshireLondonMerseysideMid GlamorganNorfolkNorth LanarkshireNorth YorkshireNorthamptonshireNorthumberlandNottinghamshireOxfordshireShropshireSomersetSouth LanarkshireSouth YorkshireStaffordshireSuffolkSurreyTyne and WearWarwickshireWest GlamorganWest MidlandsWest SussexWest YorkshireWiltshireWorcestershire

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.