Many transit maps for the New York City Subway have been designed since the subway's inception in 1904. Because the subway was originally built by three separate companies, an official map for all subway lines was not created until 1940, when the three companies were consolidated under a single operator. Since then, the official map has undergone several complete revisions, with intervening periods of comparative stability. Since April 2025, the MTA's official diagram has been inspired by a design by Massimo Vignelli. The MTA previously used a Vignelli–inspired map from 1972 to 1979, when that map was replaced by a design from Michael Hertz Associates, commissioned by John Tauranac and the MTA Subway Map Committee. There are also special maps for weekend service changes, and special events. There are several privately produced schematics that are available either online or in published form. Other subway map spinoffs exist as well, such as New York City Subway track schematics and maps of proposed expansions of the system.
Early maps
Original maps for the privately opened Interborough Rapid Transit Company (IRT), which opened in 1904, showed subway routes as well as elevated routes. However, IRT maps did not show Brooklyn–Manhattan Transit Corporation (BMT) routes; conversely, BMT maps did not show IRT routes, even after the Dual Contracts between the IRT and BMT. In fact, even in 1939, the year before the unification of the IRT, BMT, and Independent Subway System (IND) into one entity, maps by private businesses were still being printed showing only the routes of one company. The three subway companies also published their own maps, showing their own routes. Routes were not distinguished from each other on subway maps until 1958. The first route maps were aesthetically pleasing, but had the perception of being more geographically inaccurate than the diagrams today.
1940–56: Separate companies' maps After the subway operating companies were taken over by the Board of Transportation in July 1940, maps continued to be issued until 1942 in the characteristic style of the individual companies. Thus the IRT Division issued maps in the style of the former IRT company, and the BMT Division issue maps in the style of the former BMT company. In order to have an integrated design, however, the Board brought in externally produced maps. From 1943 to 1952, the Board purchased stocks of Andrew Hagstrom's maps, overprinted with the Board's service information, and issued them as de facto official maps from token booths (e.g. 1948). In 1953, the New York City Transit Authority (NYCTA) took over the subway from the Board of Transportation. They continued to issue Hagstrom maps as official maps until 1956, but instituted two changes. First: from 1954 onwards, they acquired stocks of subway maps designed by Stephen Voorhies and printed with promotional material for the Union Dime Bank. This was done to save money, as the Voorhies map was free, while Hagstrom charged for theirs. To keep the publications valid, the NYCTA periodically sent updated service information to both Hagstrom and Voorhies to be printed in service tables and, where necessary, incorporated into the map. Second: the NYCTA solicited proposals to create an in-house map design to save money and have more control of the map.
1950s and 1960s redesigns
In 1955, George Salomon submitted a proposal to the NYCTA to redesign not only the map but the entire system of nomenclature. Salomon was a German émigré, and his proposed system of route names and colors mirrored that of the Berlin U-Bahn. He had also spent a year studying under Eric Gill in England and expressed admiration for the London Underground map. His map adopted the same modernist style as Harry Beck's London map, and was the first map of the New York City Subway to follow a systematic visual language in diagrammatic form. The NYCTA rejected his systematic revision of nomenclature but did use his diagram of lines as its official map, which was implemented in 1958. After delivering his map, Salomon had no further control of it, and disliked the NYCTA's addition of touristic information to his minimalist design, such as the map of 1964.
To relieve bottlenecks in the subway system, a series of major works were carried out in the 1960s. One of them, the 2-mile (3.2 km) Chrystie Street Connection in Chinatown, Manhattan, had a major impact on the subway map, as it unified the BMT and IND divisions of the subway, thereby rendering obsolete the three-colored network maps that been used since the 1930s. The Transit Authority had to devise a new map design by the time the Chrystie Street Connection opened, so in 1964, they opened the Subway Map Competition to the general public. There were three winners; one of them, R. Raleigh D'Adamo, submitted an explanatory report with his map, which detailed his innovative proposal to color-code the subway by individual routes rather than by historic operating company. This concept was implemented by Dr. Stanley Goldstein of Hofstra University, working as a consultant to the TA, and by Dante Calise, art director at Diamond Packaging, the firm that printed the subway map. On November 26, 1967, when the new connections opened, the new map came into use. There was also a map to explain all the newly rerouted services.
Vignelli map
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