Tri-state area is an informal term in the United States which can refer to any of multiple areas that lie across three states. When referring to populated areas, the term implies a shared economy or culture among the area's residents, typically concentrated around a central metropolis.
Tri-state areas may or may not include a state boundary tripoint.
The following is not an exhaustive list. "Tri-state area" may refer to several additional places in locally understood contexts, such as a business name.
We live in a tri-state area
Tri-state area's unemployment rate is still higher than national rate
New York, New Jersey and Connecticut have been placed under a 14-day travel advisory
That includes New York City, nearby portions of New York State, northern New Jersey and southwest Connecticut.
The tri-state measure will use uniform parameters and messaging on highways, airports, websites and social media across the three states.