This article investigates whether the prevalence of conservative churches, which has been associated with variation in demographic patterns in Western Europe (Lesthaeghe and Neels 2002), can explain geographic differences in family demographic patterns-specifically fertility-in the U.S. nonblack population. Lesthaeghe and Neels find that a second demographic transition (SDT)-characterized by increasing prevalence of nontraditional family and household structure-is hindered by the presence of strong conservative religious institutions. The high religiosity of the United States compared with Western Europe makes it an interesting test case for the theory. This article analyzes the relationship between nonblack fertility and rates of membership in conservative Protestant and Latter Day Saint churches (conservative churches) among nonblacks in U.S. counties and shows that conservative church membership indeed is an independent factor in geographic differences in family demographic patterns-especially with regard to the timing of parenting, but less so with regard to nonmarital childbearing.This article contributes to understanding recent increases in age of parenting and nonmarital childbearing and recent decreases in marital childbearing in the United States (Teachman, Polonko, and Scanzoni 1999). These changes were part of a larger set of transformations in family and household demographic patterns that have been collectively identified as the "second demographic transition" (SDT) (van de Kaa 1987). Several theories have emerged to account for the SDT and for spatial variation in timing and strength of the SDT in the United States (Lesthaeghe and Neidert 2006). This article tests whether a cultural-ecological perspective, the theory of ideational shift (Lesthaeghe 1998), that was developed to explain variation in Europe (Lesthaeghe and Neels 2002), may also apply to the United States. The findings-that prevalence of conservative Protestants and Latter Day Saints (CP + LDS) adherents predicts spatial variation in the level and timing of change in three fertility outcomes-suggests that cultural differences across the landscape do matter for family demographic outcomes.
LITERATURE REVIEWDuring the last third of the 20th century, there were substantial changes in U.S. fertility patterns, including: (1) decrease in marital fertility; (2) increase in nonmarital fertility; and (3) increase in the age of childbearing (Teachman, Polonko, and Scanzoni 1999). These changes coincided with (4) increase in divorce; (5) increase in the age at first marriage; (6) increase Acknowledgments: This article benefited from the constructive feedback and comments from