OneMap National Map & Geospatial API
This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.
How this atlas is made · What “last verified” means · What “source-checked” means
Launched in 2010 by the Singapore Land Authority, OneMap is the government's authoritative national base map, built on open-source software. It exposes a free REST API — base maps, address search and geocoding, routing, reverse geocode and 110+ thematic layers (schools, health, amenities, population) — that SLA says powers over 100 government and private apps and services. A 2017 revamp added real-time traffic, and OneMap3D, a 3D visualisation layer, launched in September 2021.
what does this mean?
The strongest source is the operator's or the city's own reporting — an official report, dataset or press release. It grades who did the looking — not how well the project went. All four grades →Sources
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📎 Cite this project
1001 Smart Cities (2026). “OneMap National Map & Geospatial API” — Singapore, Singapore. The Smart City Atlas. https://1001smartcities.org/projects/singapore-onemap/ (last verified 2026-07-25). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.