Analysis of information sources in references of the Wikipedia article "Flatiron District" in English language version.
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.