The gmina covers an area of 83.8 square kilometres (32.4 sq mi), and as of 2006 its total population is 12,851.
Gmina Czernichów is located on the Vistula river, among limestone and hillocks covered with forests. It includes parts of the protected areas called Bielany-Tyniec Landscape Park and Rudawy Landscape Park. There is also a nature park, "Kajasówka", which is an excellent example of steppes in the landscape.