Turkey province boundary data Source: geoBoundaries, boundary ID TUR-ADM1-25984515, revision 9469f09. https://www.geoboundaries.org/api/current/gbOpen/TUR/ADM1/ https://github.com/wmgeolab/geoBoundaries/tree/9469f09/releaseData/gbOpen/TUR/ADM1 Underlying source: OpenStreetMap contributors, via osm-boundaries.com. https://www.openstreetmap.org/copyright License declared by this geoBoundaries release: Creative Commons Attribution-ShareAlike 2.0. https://creativecommons.org/licenses/by-sa/2.0/ This derived boundary file is distributed under the same CC BY-SA 2.0 license. Changes: simplified upstream geometry retained; coordinates rounded to 4 decimal places; properties reduced to province code, bounding box and polygon coordinates. Boundary vintage 2021, build date 12 December 2023. Not a survey or exact-location guarantee. Source SHA256: 94f64008c50e1953a56eb9dc1fb7367944d2290c6da5976a4f31e7eca35b3117