POSTCODE DISTRICT · ENGLAND

Plymouth PL1 postcode area

Read the preparedness conclusion for PL1 in Plymouth, check which council figures apply and find the official warning service for this location.

DISTRICT REPORT SCOPE

Area evidence, not a full-postcode grade

The PL1 prefix covers multiple addresses and may cross council or warning-area boundaries. The 0–6 Data & Preparedness Score below counts documented sources for this district. It is separate from the conditional A–G disruption grade on a full-postcode report.

A–G grade for PL1: not assessed at district level. A complete postcode is needed to check live utility and road incidents and listed emergency-care distance. A grade appears only when all three inputs can be scored. How the full-postcode grade works.

Population density compared with the UK

UK average: 287 residents/km². Figures below cover the named councils.

Plymouth3,399 residents/km²UK council density percentile: 84/100

ONS mid-2025 population estimates · MYE5

Preparedness conclusion for PL1

Check your premises and transport arrangements before drawing conclusions from city-wide data.

Plymouth is 3,112 residents/km² above the UK average of 287 residents/km².

The Plymouth local authority figure covers more than PL1. A city-wide average cannot show whether a residential street, a waterfront destination or a venue is affected by an instruction. Current warnings and local updates give the relevant detail.

Check current flooding in England

Local flood evidence for PL1

Recorded flooding

Plymouth City Council documented road closures and more than 200 reports relating to flooding or damage after intense rainfall in August 2020. It describes the impact on the city’s drainage network. That is a historical example of heavy rainfall, distinct from the tidal warning service for the Barbican.

Plymouth City Council August 2020 flood account

Official warning area

The Environment Agency publishes a warning area specifically for the Plymouth Barbican. The council has previously identified Sutton Harbour and the National Marine Aquarium when directing people to this warning. Open the map to check the area relevant to your PL1 address or waterfront approach.

EA Plymouth Barbican warning area

Data & Preparedness Score 6/6

All three evidence checks meet the highest level for this report. The score describes the evidence available in this report. It does not measure risk, safety or personal readiness.

Warning coverage 2/2: A named official warning or alert area is documented locally. Check the mapped boundary for your address.
Official guidance 2/2: Local authority or regional preparedness guidance is linked below.
Data completeness 2/2: Council density is available. A local flood record is documented.

How the district score is calculated

Warning coverage earns 2 points for a documented local warning area, 1 for an official service link and 0 when no source can be identified. Guidance earns 2 for a local authority or regional preparedness link, 1 for UK guidance and 0 when neither is available.

Data completeness earns 2 points when council density and a documented local flood record are both available, 1 for either and 0 for neither. The three scores are added. The number or severity of current warnings does not change the score.

Emergency information for PL1

If you need to reach someone at a different destination, check how they will get messages and how you will agree a meeting point. Avoid assuming their location is covered by the same instructions as yours.

Plymouth City Council explains what to do during a flood and provides local reporting routes. If your plans include the Barbican, check the instructions for your premises and whether the approach is open. A notice for another part of Plymouth Sound may give different locations.

Check a full PL1 postcode

Enter the complete postcode, including its final three characters, to see the nine-indicator evidence breakdown, any supported provisional A–G grade, local incident results and a check against official flood-warning boundaries.

How the nine indicators apply

A district prefix covers many full postcodes. This page has no live A–G disruption grade and does not assess war or nuclear risk. Enter a complete postcode above to see the nine-indicator breakdown for its returned location.

Can contribute to a full-postcode grade: Infrastructure: matched electricity or water incidents where covered. Medical resources: straight-line distance to a listed emergency department. Road access: nearby active TfL events where covered. Missing feeds are excluded, not scored as zero.
Can be shown, without a risk score: Wind direction and speed, one-hour rainfall forecast, and elevation with sampled local relief. These do not establish exposure to a particular incident or protection at a building.
No verified postcode-level assessment: Military targeting, building structure and designated shelter availability. A postcode prefix cannot supply these details.

Full scoring method · Compare full postcodes · UK Emergency Alerts