---
title: "Find an Outward Code"
method: GET
path: "/outcodes/{outcode}"
tags: ["Outward Codes"]
---

# Find an Outward Code

`GET /outcodes/{outcode}`

Returns aggregated information for postcodes grouped by their shared outward code.

The outward code is the first half of any postcode (3-4 characters and followed by a space). E.g. `SW1A` is the outward code for `SW1A 1AA`.

## Path parameters

- `outcode` string, required

## Response `200`

Success

- OutcodeResponse
  - `status` 200, required
  - `result` Outcode, required
    - `outcode` string, required — First part of the postcode before the space (e.g., "SW1A" in "SW1A 1AA"). Usually 2-4 characters.
    - `eastings` number, nullable, required — Ordnance Survey eastings coordinate (1m resolution). Returns 0 if location unavailable.
    - `northings` number, nullable, required — Ordnance Survey northings coordinate (1m resolution). Returns 0 if location unavailable.
    - `admin_county` string[], required — Administrative counties within this outcode.
    - `admin_district` string[], required — District/unitary authorities within this outcode.
    - `admin_ward` string[], required — Administrative/electoral wards within this outcode.
    - `longitude` number, double, nullable, required — WGS84 longitude coordinate. May be null if location unavailable.
    - `latitude` number, double, nullable, required — WGS84 latitude coordinate. May be null if location unavailable.
    - `country` string[], required — Countries within this outcode.
    - `parish` string[], required — Parishes (England) or communities (Wales) within this outcode.
    - `parliamentary_constituency` string[], required — UK Parliamentary constituencies (July 2024 boundaries) that intersect this outcode.

---

[API](https://skmtc.dev/postcodes/apis/api-reference-postcodes-io.md) · [All operations](https://skmtc.dev/postcodes/apis/api-reference-postcodes-io/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/postcodes/api-reference-postcodes-io/revisions/48aff276e237/schema)