Careful, before installing geopandas create a clone of your python root environment and install it on the clone, not on the original. Otherwise you could crash your whole system.
A step by step tutorial with pictures can be found here
In terminal:
conda create --name <env_name> --clone base
In mac installing geopandas is straightforward
In windows, you should follow these steps:
https://geoffboeing.com/2014/09/using-geopandas-windows/
1/ download GDAL, Fiona, pyproj, rtree, and shapely here
update: Apparently, since January 2024, just installing GDAL, FIONA, pyrpoj, rtree and shapely in order without downloading .wheel might work
2/install GDAL
3/Add GDAL in windows environment path (C:\Anaconda\Lib\site-packages\osgeo )
4/ install in order: Fiona
wheel file, then your pyproj wheel file, then rtree, and then shapely
5/then: pip install geopandas
6/also: pip install descartes
After you can also type:
conda install -c conda-forge mapclassify
and to handle raster
=> download rasterio wheel file and place in with the other wheel
then type
pip install GDAL-3.4.1-cp39-cp39-win_amd64.whl rasterio-1.2.10-cp39-cp39-win_amd64.whl