Even though Google does not report on monthly adoption rates of Android anymore, its Android Studio does show the number of Android devices that access the Play Store during a seven-day period alongside their corresponding OS version.
Based on this data, Android 10 is currently running on 26.5% of devices which is the most of any Android version. Last year’s Android 11 is second with 24.2%, while data for Android 12 devices is yet to be populated.
Android 9 Pie is next up with 18.2%, followed by Android 8 Oreo and its 13.7% share. Android 7 and 7.1 Nougat get 6.3% while Android 6 Marshmallow sits at 5.1%. There are about 3.9% of users still running on Android 5 Lollipop and 1.4% on Android 4.4 KitKat. The oldest Android version in the list is Android 4.1 Jelly Bean with 0.6% of all devices.