IM3 postcode district
IM3, in the IM (Isle of Man) postcode area, has 392 live and 8 terminated postcodes in the ONS Postcode Directory of August 2026. Isle of Man is a Crown Dependency, not part of Great Britain, and OS Open Names does not cover it.
| postcode area | IM (Isle of Man) |
|---|---|
| live postcodes | 392 |
| terminated postcodes | 8 |
| sectors | 4 |
| directory release | 2026-08 |
Postcodes and sectors
392 of the district's 400 postcodes are live in the ONS Postcode Directory of August 2026. A postcode directory says whether a code is in use, never who is there.
| sector | live | terminated |
|---|---|---|
| IM3 1 | 118 | 1 |
| IM3 2 | 84 | 0 |
| IM3 3 | 81 | 2 |
| IM3 4 | 109 | 5 |
Places OS Open Names lists for IM3
OS Open Names does not cover Isle of Man, so it lists no place for the district's postcodes.
Roads filed under IM3
OS Open Names covers Great Britain only and does not reach Isle of Man, so a street in IM3 cannot be confirmed from the register and the lookup answers about the postcode alone.
Check an address in IM3
Common questions about IM3
- What does an IM3 postcode tell you?
- That the address lies in the IM3 district of the IM (Isle of Man) postcode area. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 392 live postcodes.
Where the counts come from
- ons-postcode-directory · version 2026-08 · Contains ONS, OS and Royal Mail data © Crown copyright and database right 2026, Open Government Licence v3.0. Northern Ireland postcodes are excluded: their reuse needs a Land & Property Services licence.
- os-open-names · version 2026-11-01 · Contains OS data © Crown copyright and database right 2026, Open Government Licence v3.0.
What each figure means, and what a district page never says, is set out in Reading a British postcode district page; the glossary defines a postcode district, a postcode area, a postcode directory and a street register.
Data synced on 2026-11-01: the newest version among the datasets listed above.
Other districts in IM
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