Where is the Android SDK folder located?

If you're using android studio then...

1. Open the Android SDK Manager.
2. At the top of the window, just above the list of SDKs, it says "SDK Path: ".

I configured with the defaults and the path, for me, is:

C:\Users\[account]\AppData\Local\Android\sdk

You can find the path in the Android SDK Manager. On the top it lists the path, the default path in Windows is

C:\Users\%USERNAME%\AppData\Local\Android\sdk

and on Linux

/home/YourName/Android/Sdk/