OneMap Reverse Geocode

Government

by Singapore Land Authority (SLA)

Convert WGS84 or SVY21 coordinates into the nearest Singapore buildings, block numbers, road names and postal codes within a chosen buffer. Companion endpoints expose themes and planning-area population queries.

How to authenticate

1Register a free account at onemap.gov.sg.
2POST email and password to https://www.onemap.gov.sg/api/auth/post/getToken to get a 3-day access_token.
3Send the token in the Authorization header.

Example request

Request

curl -H 'Authorization: YOUR_TOKEN' 'https://www.onemap.gov.sg/api/public/revgeocode?location=1.3,103.8&buffer=40&addressType=All'

Example response

Response (truncated)

{"GeocodeInfo":[{"BUILDINGNAME":"...","BLOCK":"20","ROAD":"HOLLAND GROVE ROAD","POSTALCODE":"278790","LATITUDE":"1.3","LONGITUDE":"103.8"}]}

Notes for AI agents

buffer max is 500m. Use revgeocodexy for SVY21 input. Same token works across all OneMap APIs.

Machine-readable version: /api/apis/onemap-reverse-geocode

Related APIs

GEOGovernment

OneMap Routing

Singapore Land Authority (SLA)

Turn-by-turn routing within Singapore for drive, walk, cycle and public transport modes, including bus and train legs with fares for the pt mode. Free alternative to commercial routing for SG-only apps.

TokenfreeGeo & Maps

GEOGovernment

OneMap Search (Geocoding)

Singapore Land Authority (SLA)

Authoritative Singapore address and place search: postal codes, building names and roads to coordinates in both WGS84 and SVY21. The standard way to geocode SG addresses.

TokenfreeGeo & Maps