^ abJohn Freeman Gill (2012-04-01). "Flatiron District/Living In: Profile, Always High, Keeps Current Too". New York Times. The boundaries of the Flatiron can be a subject of disagreement, but the district generally runs from the Avenue of the Americas to Park Avenue South between 14th and 23rd Streets, excluding the blocks adjacent to Union Square. Still, as often happens when a neighborhood becomes popular, some see its borders as expanded. The Flatiron 23rd Street Partnership...places the northern boundary in the upper 20s, an area some call NoMad, or North of Madison Square Park.
^"Flatiron District". PropertyShark. Archived from the original on 2019-04-21. Retrieved 2018-01-12. New York City real estate map, showing the Flatiron District bounded by 14th Street, 23rd Street, Sixth Avenue, and Park Avenue South.
^Neighborhoods in New York City do not have official status, and their boundaries are not specifically set by the city. (There are a number of Community Boards, whose boundaries are officially set, but these are fairly large and generally contain a number of neighborhoods and the neighborhood mapArchived September 15, 2012, at the Wayback Machine issued by the Department of City Planning only shows the largest ones.) Because of this, the definition of where neighborhoods begin and end is subject to a variety of forces, including the efforts of real estate concerns to promote certain areas, the use of neighborhood names in media news reports, and the everyday usage of people.