autocomplete: Autocomplete Postcodes

API: postcodes.io:postcodes.io
Endpoint: /postcodes/{postcode}/autocomplete
Response format: text/plain
Auth: unknown
Method: GET
Last Status: 200
Latency: 160ms

Description

Returns a list of postcodes that start with the given prefix (partial postcode).

Parameters (2)

limit (integer, query, optional, default: 10)

Maximum number of results to return (default 10, max 100)

Constraints: {'maximum': 100}

postcode (string, path, required)

Partial postcode prefix to autocomplete

Examples (2)

Autocomplete postcode openapi-spec
curl 'https://api.postcodes.io/postcodes/SW1A/autocomplete'
import requests

resp = requests.get("https://api.postcodes.io/postcodes/SW1A/autocomplete")
data = resp.json()
import zingu_apis

api = zingu_apis.api("postcodes")
result = api.fetch("postcodes/{postcode}/autocomplete")

for item in result:
    print(item)
const resp = await fetch("https://api.postcodes.io/postcodes/SW1A/autocomplete");
const data = await resp.json();
Autocomplete postcode probe-gate
curl 'https://api.postcodes.io/postcodes/SW1A/autocomplete?limit=10'
import requests

resp = requests.get(
    "https://api.postcodes.io/postcodes/SW1A/autocomplete",
    params={
        'limit': '10',
    },
)
data = resp.json()
import zingu_apis

api = zingu_apis.api("postcodes")
result = api.fetch("postcodes/{postcode}/autocomplete", limit=10)

for item in result:
    print(item)
const resp = await fetch("https://api.postcodes.io/postcodes/SW1A/autocomplete?limit=10");
const data = await resp.json();

Probe History

Latency

Status Codes

TimeStatusLatencySize
2026-04-16 01:59:37.617374 200 160ms
2026-04-16 00:28:18.004562 200 139ms
2026-04-15 03:51:41.744172 200 173ms
2026-04-15 02:36:57.376154 200 121ms
2026-04-14 00:56:40.665530 200 188ms
2026-04-14 00:32:59.263847 200 185ms
2026-04-12 14:50:21.372301 200 824ms
2026-04-12 14:06:20.968860 200 179ms
2026-04-10 01:13:13.572903 200 115ms
2026-04-10 00:56:50.205633 200 112ms
2026-04-09 03:17:33.402499 200 103ms
2026-04-09 01:10:51.623855 200 194ms
2026-03-28T05:36:02.389104 200 107ms