How old was Adam when he was evicted from Eden?

The Bible does not say. Adam’s eviction from Eden could have been as little as a few days after his creation, to over a hundred years. He must have been less than 130 years old because Seth was born after Adam had lived 130 years (Genesis 5:3), and Adam had already had at least two sons (Cain and Abel) before that, both of whom appear to have been born outside Eden (Genesis 4).