These postcodes are structurally valid but fictional, for software testing and form design. This is not a Royal Mail postcode lookup: the Bristol districts are real, the full postcodes are not assigned to any address.
A random Bristol postcode generator combines a real Bristol postcode district with a generated inward code, producing a structurally valid postcode that is not assigned to any delivery point.
Every postcode on this page starts from a genuine Bristol postcode district. There are 15 of them, in the BS postcode area, and they all belong to the BRISTOL post town in Bristol. The three characters after the space are generated to the Royal Mail format rules, so a result validates in any form or database while belonging to no real property.
BS5 6JH — district BS5, sector BS5 6, BRISTOL, BristolBS7 4BP — district BS7, sector BS7 4, BRISTOL, BristolBS15 5BT — district BS15, sector BS15 5, BRISTOL, BristolBS2 4YW — district BS2, sector BS2 4, BRISTOL, BristolBS9 6XD — district BS9, sector BS9 6, BRISTOL, BristolBS1 5FF — district BS1, sector BS1 5, BRISTOL, BristolThis page produces postcodes on their own. For complete Bristol addresses — building number, street, locality, post town, Bristol and postcode, laid out to Royal Mail conventions — use the random Bristol address generator.
A UK postcode splits into an outward code and an inward code. The outward code identifies the district; the inward code narrows it to a small group of properties. This generator keeps the first half real and generates the second, which is what makes the output safe to use and still valid.
Bristol sits in the BS postcode area. Every district below is a real outward code assigned to the BRISTOL post town.
| District | Locality | Structural range |
|---|---|---|
| BS1 | — | BS1 0AA – BS1 9ZZ |
| BS2 | St Pauls | BS2 0AA – BS2 9ZZ |
| BS3 | Bedminster | BS3 0AA – BS3 9ZZ |
| BS4 | Brislington | BS4 0AA – BS4 9ZZ |
| BS5 | Easton | BS5 0AA – BS5 9ZZ |
| BS6 | Redland | BS6 0AA – BS6 9ZZ |
| BS7 | Horfield | BS7 0AA – BS7 9ZZ |
| BS8 | Clifton | BS8 0AA – BS8 9ZZ |
| BS9 | Stoke Bishop | BS9 0AA – BS9 9ZZ |
| BS10 | Henbury | BS10 0AA – BS10 9ZZ |
| BS11 | Avonmouth | BS11 0AA – BS11 9ZZ |
| BS13 | Hartcliffe | BS13 0AA – BS13 9ZZ |
| BS14 | Whitchurch | BS14 0AA – BS14 9ZZ |
| BS15 | Kingswood | BS15 0AA – BS15 9ZZ |
| BS16 | Fishponds | BS16 0AA – BS16 9ZZ |
The structural range is what the postcode grammar permits for each district, not a list of codes Royal Mail has issued. Which sectors and units are actually allocated is Postcode Address File data, which is licensed and not held here — so a generated postcode inside the range may well be unallocated. For test data that is the point.
A postcode carries more than a location. Reading one from Bristol tells you which country's addressing conventions apply, which ceremonial county the address sits in, and — if you need a matching telephone number — which dialling code area it falls in.
| Field | Value | Where it comes from |
|---|---|---|
| Post town | BRISTOL | Royal Mail post town, written in capitals on the address |
| Postcode area | BS | The leading letters of every district above |
| Ceremonial county | Bristol | ONS administrative geography |
| Country | England | One of the four countries of the United Kingdom |
| Region | South West England | ONS ITL1 statistical region |
| Dialling code | 0117 | Ofcom National Telephone Numbering Plan |
Royal Mail has not required a county line on addressed mail since 1996. BRISTOL plus a correct postcode is sufficient; Bristol is included because plenty of address forms and legacy databases still expect a county.
What they are not for: sending post, verifying an identity, or implying that a property exists. If you need to know whether a Bristol address is deliverable, that is a licensed Royal Mail Postcode Address File lookup, and no generator can answer it.
The districts are real: all 15 of them are Royal Mail outward codes genuinely assigned to the BRISTOL post town. The three characters after the space are generated, so the full postcode is almost certainly not allocated to any property. That combination is deliberate — the result resolves to Bristol in a district lookup and passes validation, but it is not a live delivery point and must never be used to send post.
15, in the BS postcode area: BS1, BS2, BS3, BS4, BS5, BS6, BS7, BS8, BS9, BS10, BS11, BS13, BS14, BS15, BS16. That is the count for the BRISTOL post town as recorded in this site's registry; a post town does not follow council boundaries, so it may not match what a resident would call "Bristol".
BS. The postcode area is the leading letter or letters of the outward code, so every Bristol postcode begins BS — for example BS1. The digits that follow identify the district within the area.
This page generates postcodes on their own and explains Bristol's district structure. The Bristol address generator produces complete postal addresses — building number, street, locality, post town, county and postcode — laid out to Royal Mail conventions. Use this page when you need postcodes to test a postcode field; use the address generator when you need whole addresses.
Yes, with no API key. Call GET /api/v1/postcodes/random?location=bristol&count=25 for JSON. Add &seed=1 to get the same set back on every request, which keeps snapshot tests stable. The response carries the outward code, inward code, area, district and sector for each postcode alongside the post town and county.
Structural validation, yes: the format, the length and the excluded letters are all respected, so a correctly written regex or a library check will accept them. A validator backed by licensed Postcode Address File data will reject most of them, correctly, because the full postcode is not an allocated delivery point. If your test suite needs addresses that pass a PAF lookup, no generator can supply them.
Postcodes are generated on demand and never stored. They are for software testing and development only, and must not be used to send post, to imply a real address, or for identity verification.