Welcome to Kensico ...

Kensico is located in Westchester County<1>.

While we don't have a date for the founding of Kensico, you might consider that their post office opened in 1849. The community was inundated by the Kensico Reservoir.

Time Zone: Kensico lies in the Eastern Time Zone (EST/EDT) and observes daylight saving time

Adding Kensico to Our Gazetteer ...

The earliest source we've referenced which mentioned Kensico was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<2>

From that list, the Kensico post office opened in 1849.

We also found Kensico in the book titled Table of U.S. Post Offices in the United States (Jan. 1851).

For more details, see References and Mentions for Kensico.

Footnotes ...

<1>	If you're interested in how the shape of New York's counties, including Westchester, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>	A copy of their list with background information can be found at: https://cblevins.github.io/us-post-offices/data-biography/