Ideal Family Size and Reproductive Orientations: An Exploration of Change Over Time in the United States.

Drawing on more than 30 years of nationally representative microdata from the General Social Survey, this article comprehensively updates recent trends in ideal family size in the United States. It first documents stability in ideal family sizes between the mid-1980s and 2018, even in the face of a recent fertility decline. Next, the study adopts a latent class approach that identifies typologies of "reproductive orientations," defined as multidimensional mental models of reproduction encompassing ideal family size, attitudes toward reproductive labor, and views on reproduction contexts. The findings indicate three distinct classes of reproductive orientations: Progressive Familialists, Conservative Familialists, and Blended Egalitarians. Further analyses suggest that the prevalence of these classes has changed over time and that class membership is associated with distinct patterns of childbearing and marriage. These findings deepen contemporary understandings of ideal family size in the United States and have broader implications for how demographers conceptualize and measure fertility preferences across diverse contexts.