Darby's Synopsis: 1 Peter: Introduction
J. N. Darby, Synopsis of the Books of the Bible · public domain
Those to whom Peter's epistles are addressed
The first epistle of Peter is addressed to believers among the dispersed of Israel found in those provinces of Asia Minor which are named in the first verse; the second epistle declares itself to be a second addressed to the same persons: so that the one and the other were destined for the Jews of Asia Minor (that is, to those among them who had the same precious faith as the apostle).
Source
J. N. Darby, Synopsis of the Books of the Bible, text from STEM Publishing: https://www.stempublishing.com/authors/darby/synopsis/1peter/1peter0.html. Provenance on the sources page.