Population Health Map

• Pick a data layer (top-left) — deprivation, population density, age, general health, disability or ethnicity — and every neighbourhood in England recolours instantly, with a legend explaining the scale.
• Search (top-right) for any GP practice, neighbourhood or borough to jump straight to it.
• Click a neighbourhood to open its full profile: IMD deciles across all seven deprivation domains, age structure, self-reported health, disability, ethnicity and the GP practices local residents are registered with.
• Click a GP practice marker (red dot) to see its official catchment boundary (dashed line) and the neighbourhoods where its registered patients live.
• Hold Ctrl (Cmd on Mac) and click more practices to overlay several catchments in different colours — useful for comparing neighbouring practices or mapping a whole PCN. Ctrl/Cmd-click a selected practice again to remove it.
• Adjust the shading opacity slider to balance the data layer against the street map underneath.

What is an LSOA?

A Lower layer Super Output Area is a small statistical neighbourhood defined by the Office for National Statistics, home to around 1,500 residents. England is divided into 33,755 LSOAs, and they are the finest geography at which population health data is published — small enough to show variation street by street within a single GP practice's patch.

What is the Index of Multiple Deprivation (IMD)?

The IMD is the UK government's official measure of relative deprivation, combining seven domains: income, employment, education, health, crime, barriers to housing and services, and living environment. Every neighbourhood is ranked and grouped into deciles — decile 1 is the most deprived 10% of neighbourhoods in England, decile 10 the least deprived. This map uses IMD 2025.

What is a GP practice catchment area?

The boundary a practice defines in its NHS contract as the area within which it registers patients — also called the practice boundary or practice area. This map shows the practice-submitted inner catchment boundary from the NHS England national collection, alongside the neighbourhoods where each practice's registered patients actually live, so you can see how contract boundary and real patient population compare.

Where does the data come from and how current is it?

All sources are official open data: ONS Census 2021 (general health, disability, ethnicity, density), ONS mid-2024 small area population estimates (age), DLUHC IMD 2025 (deprivation), NHS England GP registration data by neighbourhood and QOF disease prevalence 2024/25, and practice-submitted catchment boundaries. Full source links are in the footer beneath the map.

Who is this map for?

Anyone planning or delivering primary care: practice managers and GPs understanding their registered population, PCNs and ICBs targeting health-inequality funding and additional services, LMCs and commissioners weighing list sizes against deprivation, public health teams, researchers — and patients curious about their local area.