FREE NHS ICB MAPS · EAST OF ENGLAND

Essex ICB map

Explore the Essex ICB map, including Chelmsford, Colchester, Southend-on-Sea and Basildon. View the April 2026 boundary, local Sub-ICB areas and NHS hospital locations, or download the free vector PDF.

April 2026 boundary update

Established in April 2026 from all or parts of the former ICB areas listed below.

Suffolk and North East Essex ICB · Mid and South Essex ICB · Hertfordshire and West Essex ICB

Essex ICB and Sub-ICB boundary map with named towns, cities and NHS hospital crosses — Click the map to view the vector detail. Red crosses show NHS hospital sites; colours and codes identify the Sub-ICB areas.

Inside Essex ICB

The Essex Integrated Care Board (ICB) boundary covers approximately 3,670 km² in the East of England NHS region, extending roughly 72 km north to south and 90 km east to west.

Its 7 Sub-ICB locations show the local divisions within the ICB. The checked hospital directory includes 15 NHS trust or care-trust sites within the outline. The primary care extract records 40 PCNs associated with this ICB and 205 distinct GP practice codes.

Postal coverage reaches into 85 postcode districts and 280 postcode sectors. CM3, CM1, CO15, CM7, CM2 have the largest numbers of current postcode locations allocated to this ICB in the dataset. Explore the main postcode areas, NHS hospitals and local street maps below.

Mapped area: 3,670 km²
Sub-ICB areas: 7
NHS hospital records: 15
Primary care networks: 40

Explore other free ICB maps

36 current ICBs

Previous ICB areas Before April 2026

Towns and cities on this map

Open a closer street-map view of these places in Essex.

Main postcode areas

These areas contain 98% of the current postcode locations matched to this ICB. Postcode and ICB boundaries overlap; each link shows the whole postcode area.

Postcode district and sector maps for the main areas in Essex ICB
Postcode area	District map	Sector map
CM – Chelmsford	CM districts	CM sectors
SS – Southend-on-Sea	SS districts	SS sectors
CO – Colchester	CO districts	CO sectors
RM – Romford	RM districts	RM sectors
IG – Ilford	IG districts	IG sectors
CB – Cambridge	CB districts	CB sectors

NHS hospitals on the map

15 named NHS trust or care-trust hospital records are shown. Private operators are excluded; sites sharing a location may have a single cross.

View the NHS hospital names and postcodes 15

Brentwood Community HospitalCM15 8DR
Capio Oaks HospitalCO4 5XR
Chelmsford & Essex HospitalCM2 0QH
Colchester General HospitalCO4 5JL
Halstead HospitalCO9 2DL
Marlborough House (Meht)CM1 1LN
Mid Essex HospitalCM1 7ET
Princess Alexandra HospitalCM20 1QX
Rochford Community HospitalSS4 1RB
Saffron Walden Community HospitalCB11 3HY
Southend HospitalSS0 0RY
St Margaret's HospitalCM16 6TN
The Chelmsford Private Day Surgery HospitalCM2 0PP
The Fryatt Hospital And Mayflower Medical CentreCO12 4EX
Thurrock Community HospitalRM16 2PX

GBMaps map assistant demonstration adding a hospital marker, map key and coloured drive-time areas to an ICB map

MAKE THE MAP YOUR OWN

Colour and customise your ICB map

Highlight ICB areas, add place markers and labels, and build a map key for your report or presentation.

See the map assistant add a hospital marker and coloured drive-time areas in this example.

Open the ICB colouring tool

Map sources and useful limits

Boundaries: ONS ICB and Sub-ICB locations, April 2026. Outlines are simplified for display; place and postcode matches use the original boundaries.

Hospital names come from the supplied hospital directory, matched to active NHS Organisation Data Service records on 13 November 2026. Only sites associated with NHS trusts or care trusts are included. This is a selection of hospital locations, not a list of current clinical services or commissioning relationships.

PCN count: the supplied 2026 primary care extract. Main postcode areas: the six largest areas with at least 2% of the ICB’s located current postcodes in the November 2026 dataset. A postcode area name does not mean its namesake town is inside the ICB.

Place names: Ordnance Survey. Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Contains National Statistics data © Crown copyright and database right 2026. Map artwork © GBMaps.com.