Manx Technology GroupSmart Island
Data

Geography & Postcodes

19,026 geographic records - addresses, postcodes, named places, Manx-language names, natural features, and highways across the Isle of Man.

Data generated: 21 Mar 2026

4,106
Total Addresses
Mapped locations
5,413
Postcodes
IM postcode areas
1,393
Named Places
Towns & settlements
1,786
Manx Names
Gaelic place names

AI Geography Analysis

Narrative generated by Azure OpenAI - click to expand

The Isle of Man: Geography, Place Names, and Infrastructure

The Isle of Man, nestled in the heart of the Irish Sea, is a Crown Dependency with a population of approximately 85,000 and a land area of 572 square kilometres. Despite its modest size, the island boasts a rich tapestry of geographic features, a distinctive system of addresses and postcodes, and a unique cultural heritage reflected in its place names and road network.

Address and Postcode System

The Isle of Man utilises the "IM" postcode system, which is exclusive to the island and forms part of the broader British postal framework. There are 4,188 unique postcodes in use, supporting 4,106 recorded addresses. The postcode prefixes are distributed geographically, with each prefix corresponding to a particular region or settlement. For example, IM1, IM2, and IM3 cover the capital, Douglas, and its environs, together accounting for almost 2,000 addresses. IM9, the most populous prefix, encompasses the southern region, including Castletown and Port Erin, with 1,221 addresses.

Other significant prefixes include IM8 (273 addresses) for Ramsey in the north, IM4 (261 addresses) for the central areas, and IM5 (202 addresses) for Peel in the west. Smaller prefixes, such as IM6, IM7, IM81, IM88, and IM99, cover more rural or specialised locations, with only a handful of addresses each. This granular system ensures efficient mail delivery across the island's diverse settlements, from bustling towns to isolated farmsteads.

Place Naming Patterns and the Manx Language

The Isle of Man's place names are a living record of its history and cultural shifts. Out of the 1,393 named places, the majority are farms (791), followed by localities (468), hamlets (56), and villages (33). Towns are rare, with only three officially designated as such. This pattern reflects the island's rural character and the importance of agriculture and small communities in its development.

A striking feature is the prevalence of dual English and Manx Gaelic names. The Manx language, a branch of Gaelic, was once on the verge of extinction but has seen a remarkable revival in recent decades. There are 1,786 places with recorded Manx names, a testament to the island's commitment to cultural preservation and revival. Road signs, public buildings, and official documents often feature both languages, reinforcing a sense of identity and pride. This bilingualism is not only symbolic but also practical, as many traditional names describe landscape features or functions, offering insight into the island's geography and history.

Natural Features: Rivers, Hills, and Glens

The Isle of Man's landscape is renowned for its dramatic beauty. The central spine of hills, dominated by Snaefell (620 metres), provides sweeping views across the island and beyond. There are 272 named natural features, including rivers such as the Sulby, Neb, and Glass, which carve their way through lush valleys to the sea. The island's glens-steep, wooded valleys-are particularly cherished, with many designated as national glens and protected for their ecological and recreational value.

Coastal cliffs, sandy bays, and small offshore islets add to the variety, supporting a rich biodiversity. The blend of upland and lowland, woodland and wetland, creates a patchwork of habitats that are both scenic and significant for wildlife.

Road Network Coverage

Despite its rural character, the Isle of Man is remarkably well connected. There are 6,056 named highways, forming a dense network that links even the most remote farms and hamlets. The road system is famous worldwide for hosting the annual TT motorcycle races, which take advantage of the island's winding, challenging routes. Roads range from narrow country lanes bordered by traditional stone walls to more substantial routes connecting the main towns.

The comprehensive road network reflects both the island's historical settlement patterns and its modern needs, ensuring accessibility and cohesion across the landscape.

Conclusion

The Isle of Man's geography is more than a matter of physical features; it is deeply entwined with its cultural identity, history, and daily life. The structure of addresses and postcodes, the revival of Manx Gaelic in place names, the dramatic natural scenery, and the extensive road network together create a distinctive sense of place. The island stands as a testament to the enduring connections between landscape, language, and community.

Charts

Addresses by Postcode Area

Named Places by Type

πŸ“ŠKey Insights
-19,026 geographic records across the Isle of Man
-4,106 mapped addresses with postcode data
-1,393 named places from villages to towns
-1,786 Manx Gaelic place names preserving cultural heritage
-272 natural features and 6,056 named highways
-All IoM postcodes begin with IM prefix (IM1 through IM9, IM99)
🌍Sample Records
#Name / AddressTypePostcode
139 Stepssteps-
239 Stepssteps-
3Aalin Courtservice-
4Abbey Lanetrack-
5Abbey Roadunclassified-
6Abbey Roadunclassified-
7Abbey Roadunclassified-
8Abbey Road Laneservice-
9Abbots Closeresidential-
10Abbots Closeresidential-
11Abbots Driveresidential-
12Abbots Driveresidential-
13Abbots Driveresidential-
14Abbots Wayunclassified-
15Abbots Wayunclassified-
16Abbots Wayunclassified-
17Abbots Wayresidential-
18Abbots Wayfootway-
19Abbots Wayfootway-
20Abbots Wayfootway-
ℹ️About this data

Source: Data from dankarran/isleofman-opendata derived from OpenStreetMap contributors.

Geography data includes structured addresses, postcode boundaries, named settlements (towns, villages, hamlets), Manx Gaelic place names preserving the island's linguistic heritage, natural features (hills, rivers, bays), and named highways and roads.

Caveats: Address and postcode data from OpenStreetMap may not be exhaustive. The official Royal Mail Postcode Address File (PAF) contains the definitive address list. Manx name data reflects community-contributed translations and may vary from official sources.

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