Genetic and environmental influences on residential location in the US

► Genetic and environmental influences on residential walkability of twins were examined. ► In twins 18-24.9 years, residential walkability was influenced by common environment factors. ► In twins 25+ years, residential walkability was influenced by unique environment factors. ► There was a small genetic effect on residential walkability in both age groups. ► These findings confirm the importance of environmental factors in residential walkability.