Static geodata service

Versioned boundaries, ready to fetch.

Production consumers should pin an immutable release URL rather than depend on latest.json.

Datasets

Taiwan Township Boundaries

Township, county-administered city and district boundaries.

Dataset ID
tw-townships
Latest release
2026-07-04.1
Source
內政部國土測繪中心
License
政府資料開放授權條款-第1版
Attribution
內政部國土測繪中心 2025 鄉鎮市區界線(1140318);此開放資料依政府資料開放授權條款第1版進行公眾釋出。

Download immutable GeoJSON

const response = await fetch('/datasets/tw-townships/releases/v1/2026-07-04.1/data.geojson');
const boundaries = await response.json();

UK Local Authority District Boundaries

May 2025 United Kingdom Local Authority District boundaries, ultra generalised and clipped.

Dataset ID
uk-local-authority-districts
Latest release
2026-07-10.1
Source
Office for National Statistics
License
Open Government Licence v3.0
Attribution
Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2025.

Download immutable GeoJSON

const response = await fetch('/datasets/uk-local-authority-districts/releases/v1/2026-07-10.1/data.geojson');
const boundaries = await response.json();