This paper finds evidence that ten New Urbanism principles can produce positive public health outcomes. These outcomes include: (1) higher usage of non-motorized and public transit modes, which results in more physical activity; (2) lower usage of private automobiles, which results in less air pollution; (3) safer streets, which results in fewer traffic accidents; and (4) complete community planning for residents, regardless of income, age or ideas, which results in better access to health resources. These results improve public health. This study also applies several walkability and connectivity indicators and suggests their use in cities to maximally accrue public-health benefits.