If I type ok maps I cache a particular area from the Google Maps to my mobile device. Is there any folder where these files are stored? I dived into folders but found nothing that can possibly be such place.
There's no visible location where the maps are saved, on Android devices some of the pointers are saved to /sdcard/Android/data/com.google.android.apps.maps/cache but other then that it's all saved on hidden cache partition.
if you want to back up the maps folder you can use this guide.