Eating local food is eating seasonal. They are full of flavor and taste better than the ones available in the winter that have traveled thousands of miles and picked before they were ripe. Local food has more nutrients.
When grown locally, the crops are picked at their peak of ripeness versus being harvested early in order to be shipped and distributed to your local retail store.
Local food has a shorter time between harvest and your table, and it is less likely that the nutrient value has decreased. Food imported from far-away states and countries is often older, has traveled and sits in distribution centers before it gets to your store.