There are various ways to install GeoPandas. You can use pip install, conda install, Anaconda3, or GitHub. Using a terminal window, you can install it as follows:
>> pip install geopandas
>> conda install -c conda-forge geopandas
Detailed installation info is available here: http://geopandas.org/install.html
GeoPandas is also available through PyPi: https://pypi.python.org/pypi/geopandas/0.3.0
GeoPandas is also available through Anaconda Cloud: https://anaconda.org/IOOS/geopandas