Habitat edges are an important ecological concept that applies to numerous organisms. Habitat edges are thought to be an area of increased abundance and diversity of animal and plant species. The increased variety and density of species at the intersection of different habitat types constitutes the basis of the "edge effect" concept. The purpose of this study was to examine the influence of edge on the seasonal densities of Microtus pennsylvanicus and Peromyscus leucopus. The hypothesis tested was that small mammal populations should be greater in edge habitats than interior habitats. Study grids were placed in three different habitat types: open field, forest, and field/forest edges. Grids were live-trapped for one week during the spring, summer, and fall to test for seasonal differences. Habitat data was taken in all habitats to test for vegetation differences. Multi-variable analysis of variance (MANOVA) was applied to the data to test for any differences between the variables (species, season, and habitat). White-footed mice made up 87% of the captures in the forested habitat and meadow voles made up 70% of the captures in the old-field habitat. No edge effect was found for either species, however, meadow voles were found in very low numbers 30 m from forested habitats as compared to 30 m from forested habitats. Most of the statistical differences in habitat data came from season and not habitat type. Neither species exhibited any significant population density differences among seasons or habitats. The habitat data taken in the old-field habitats show that percent ground cover, grass/forb height, and appearance of runaways all were important in determining where a meadow vole was captured. The habitat data taken in the forested habitats show that percent canopy cover and shrub height were important in determining where a white-footed mouse was captured, but percent ground cover and fallen log density were not important.