What order does the divergent series go in?

The divergent series in the "Divergent" series by Veronica Roth is primarily organized into three main books: "Divergent," "Insurgent," and "Allegiant." The story unfolds in a dystopian society divided into factions based on human virtues, following the journey of Tris Prior as she navigates her identity and the conflicts arising from her choices. Each book builds upon the previous one, deepening the exploration of themes such as identity, loyalty, and societal structure.