>>>Considering that Peter specifically calls out the Hebrew settlements of the area that was then known as Babylon as the intended recipients of the epistle, I suspect that was where he was when he wrote it.<<<
I recall that Peter wrote his epistle to strangers scattered throughout Asia Minor, including Proconsular Asia. What areas are you referring to?
Philip
If you look up the word used for “strangers” in the Greek text, you will see that he was speaking to his Hebrew cousins is the area below the Black sea.