Putnam County, New York in the context of "Westchester County, New York"

The Connecticut panhandle is the southwestern appendage of Connecticut, where it abuts New York State. It is contained entirely in Fairfield County and the Western Connecticut Planning Region, and includes all of Greenwich, Stamford, New Canaan, and Darien, as well as parts of Norwalk and Wilton. It has some of the most expensive residential real estate in the United States.

The irregularity in the boundary is the result of territorial disputes in the late 17th century between the British colonies of New York and Connecticut. In an agreement on November 28, 1683, that established the New York–Connecticut border as 20 miles (32 km) east of the Hudson River, New York gave up its claim to this area of 61,660 acres (249.5 km) east of the Byram River, whose residents considered themselves part of Connecticut. In exchange, New York received an equivalent area consisting of a 1.81-mile-wide (2.91 km) strip of land known as the "Oblong" running northwards from Ridgefield, Connecticut to the Massachusetts border, alongside the New York counties of Westchester, Putnam, and Dutchess. New York was also given undisputed claim to Rye, New York.

The Harlem Line is an 82-mile (132 km) commuter rail line owned and operated by the Metro-North Railroad in the U.S. state of New York. It runs north from New York City to Wassaic, in eastern Dutchess County. The lower 53 miles (85 km) from Grand Central Terminal to Southeast, in Putnam County, is electrified with a third rail and has at least two tracks. The section north of Southeast is a non-electrified single-track line served by diesel locomotives. Before the renaming of the line in 1983, it eventually became the Harlem Division of the New York Central Railroad. The diesel trains usually run as a shuttle on the northern end of the line, except for rush-hour express trains in the peak direction (two to Grand Central in the morning, two from Grand Central in the evening).

With 38 stations, the Harlem Line has the most of any Metro-North main line. Its northern terminal, Wassaic, is the northernmost station in the system. It is the only Metro-North line used exclusively by that carrier (no use by Amtrak, though CSX services freight customers as far north as Mount Vernon) and the only one that uses the entirety of existing track. It is colored blue on Metro-North timetables and system maps, and stations on the line have blue trim. The blue color-coding appears to have started with timetables issued by predecessor New York Central for the then-Harlem Division as far back as 1965.

Carmel (pronounced /ˈkɑːrməl/) is a town in Putnam County, New York, United States. As of the 2020 United States census, the town had a population of 33,576.

The Town of Carmel is on the southern border of Putnam County, abutting Westchester County, approximately 50 miles (80 km) north of New York City and 10 miles (16 km) west of Danbury, Connecticut. It has no incorporated villages, although the hamlets of Carmel and Mahopac each have populations sizable enough to be considered villages.

The Archdiocese of New York (Latin: Archidiœcesis Neo-Eboracensis) is a Latin Church archdiocese of the Catholic Church located in the State of New York. It encompasses the boroughs of Manhattan, the Bronx and Staten Island in New York City and the counties of Dutchess, Orange, Putnam, Rockland, Sullivan, Ulster, and Westchester to the north of the city. It does not include the New York City boroughs of Brooklyn or Queens, which form the Diocese of Brooklyn nor north of the Hudson Valley; however, the Diocese of Brooklyn is a suffragan diocese of the Archdiocese of New York.

The Archdiocese of New York is the second-largest diocese in the United States by population, encompassing 296 parishes that serve around 2.8 million Catholics, in addition to hundreds of Catholic schools, hospitals and charities. The archdiocese also operates St. Joseph's Seminary in Yonkers, New York. The archbishop is also the metropolitan of the larger Ecclesiastical Province of New York.