Patchiness of resources has been suggested to influence the outcome of interspecific interactions in both theoretical and empirical studies, but little work has been done on how population dynamics may be affected by an interaction between the degree of patchiness and the spatial patterns of oviposition. We subdivide resources into identical parcels in a simulation model in which an all-female population oviposits randomly in patches, after which density dependence affects larval survival. We use an analysis of variance to investigate how interactions among fecundity, the form of competition, the initial starting population, the degree of subdivision, and the extent to which females lay eggs in clumps affects the number of adults one generation later. Subdivision of larval resource has small effects on the resulting number of adults over much of the parameter space we explore. However, when fecundities are high, when some degree of scramble competition exists, and when eggs are deposited in clumps, subdivision has strong effects on the behavior of the population. These effects are interpreted in the context of the shape of the density-dependence curve that acts within patches. When such interactions are expected, it may be necessary to include within-patch density dependence in models of patchy systems. Populations in systems of patches may be more stable than suggested by within-patch dynamics alone, simply because of compounding of the distribution of the density-dependent effects and the distribution of individuals to patches.