Area code 845, Telephone prefix in Hudson Valley, New York, US.
Area code 845 covers a large portion of the Hudson Valley and includes Orange County, Putnam County, Rockland County, and Ulster County north of New York City. This prefix connects callers to homes and businesses in a mix of suburban towns, small cities, and rural communities along the Hudson River.
This prefix was introduced in the year 2000 when the growing number of phone lines in the Hudson Valley required a split from area code 914. The change gave communities north of Westchester County their own identifier and reflected rapid population growth and rising demand for phone numbers.
The area code connects diverse communities across the Hudson Valley region, from urban centers to rural settlements in multiple counties.
Anyone calling within this prefix must always dial all ten digits, including the area code itself, even for local calls. This rule has been in place since the overlay code 329 was introduced in March 2023 and applies to all calls within the same region.
With the introduction of the 329 overlay, both prefixes can now be assigned on the same street, even within the same building. Neighbors therefore dial different area codes even though they live only a few meters apart.
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