There are currently 17 U.S. Routes—15 mainline routes and two official special routes—that exist entirely or partially in New York. In New York, U.S. Routes are mostly maintained by the New York State Department of Transportation (NYSDOT), with some exceptions. U.S. Routes in New York are generally directly referenced by NYSDOT with their number; however, the letter "U" is suffixed to the number of the route on reference markers and in internal documents if there is numerical duplication between a U.S. Route and a state route. Two such numerical duplications exist: U.S. Route 2 and New York State Route 2 (US 2 and NY 2; inventoried as "2U" and "2", respectively), and US 15 and NY 15 ("15U" and "15"). A third would exist between US 220 and NY 220; however, the New York portion of US 220 is locally maintained.
The "From" column indicates the southern or western terminus of the route; likewise, the "To" column indicates the northern or eastern terminus of the route. The "mi" and "km" columns give the length of the route in miles and kilometers, respectively. Designations that are shaded in dark gray are numbers not currently assigned to a highway.
 Main routes
| US 1
||New Jersey line at Manhattan
||Connecticut line at Port Chester
||US 1 crosses the Hudson River from New Jersey via the George Washington Bridge and follows the Cross Bronx Expressway and the Boston Post Road through Manhattan, the Bronx and Westchester County to the Connecticut state line at Port Chester.
| US 2
||Vermont line at Rouses Point
||US 2 begins at US 11 in Rouses Point and crosses into Vermont while traversing the Richelieu River.
| US 4
||Vermont state line at Hampton
||US 4 begins at US 9 and US 20 in East Greenbush and follows the Hudson River north through Troy, Mechanicville, and Schuylerville to Hudson Falls. At Hudson Falls, the route breaks from the river and proceeds northeastward along the Champlain Canal to Whitehall, from where US 4 continues eastward to Fair Haven, Vermont.
| US 6
||Pennsylvania line at Port Jervis
||Connecticut line at Southeast
||US 6 enters and leaves New York in close proximity to I-84; however, US 6 follows a more circuitous route to the south between Middletown and Carmel via Peekskill. The route has overlaps with NY 17 and US 202 and crosses the Hudson River on the Bear Mountain Bridge.
| US 6N
||US 6N was a spur of US 6 that connected US 6 in Port Jervis to US 9W in Kingston. It became part of US 209 c. 1935.
| US 7
||New York City line at Mount Vernon
||Connecticut line at Amenia
||The original plans for US 7 had the route entering New York at Amenia and following modern US 44 and NY 22 south to New York City. The route was reconfigured by 1929 to bypass New York to the east.
| US 9
||New Jersey line at Manhattan
||US 9 enters New York on the George Washington Bridge and follows the Hudson River from New York City to Albany, passing through Peekskill, Poughkeepsie, and Hudson along the way. North of Albany, US 9 follows I-87 through the northeastern counties of New York to Champlain, where it ends at I-87 about 1 mile (1.6 km) south of the Canadian border.
| US 9E
||New York City line at Yonkers
||US 9E was the designation ultimately assigned to the proposed US 109 from New York City to Waterford. At Waterford, US 9E merged with US 9W to become US 9. Most of US 9E was absorbed by an extended US 9 in 1930.
| US 9W
||New Jersey line at Orangetown
||US 9W follows the west bank of the Hudson River from New Jersey to Albany, where it ends at US 9. The route serves several riverside locations, namely Newburgh, Kingston, and Catskill. The portion of the route north of Kingston closely parallels the New York State Thruway (I-87).
| US 11
||Pennsylvania line at Kirkwood
||Canadian border at Rouses Point
||US 11 parallels I-81 northward through the Central New York cities of Binghamton, Cortland, and Syracuse to Watertown, where it turns northeastward to pass through the northern portion of the North Country. The route ends at the Canadian border in Rouses Point, where it continues into Canada as Quebec Route 223.
| US 15
||Pennsylvania line at Lindley
||US 15 follows a generally northerly alignment through southeastern Steuben County from Lawrenceville, Pennsylvania, to Painted Post, where it ends at an interchange with I-86 and NY 17. The route is gradually being converted into a limited-access highway that will eventually carry I-99.
| US 20
||Pennsylvania line at Ripley
||Massachusetts line at New Lebanon
||US 20 extends across the entire state, from Ripley in the west to New Lebanon in the east. It passes through Buffalo and Albany and serves several smaller cities in the Finger Lakes region, where US 20 has a lengthy overlap with NY 5.
| US 44
||Connecticut line at Millerton
||US 44 begins at US 209 near Kerhonkson, a hamlet in the town of Wawarsing, and travels eastward across the state to Millerton. The route is concurrent with NY 55 from US 209 to Poughkeepsie, where both routes cross the Hudson River on the Mid-Hudson Bridge before splitting east of downtown.
| US 62
||Pennsylvania line at Frewsburg
||US 62 traverses the westernmost counties of New York, indirectly serving Jamestown and directly serving Gowanda, Hamburg, and Buffalo. The route ends at NY 104 in downtown Niagara Falls.
 Auxiliary routes
 Special routes
| US 20A
||US 20A is a southerly alternate route of US 20 between Hamburg and East Bloomfield. Along the way, the route passes through the villages of East Aurora, Warsaw, and Geneseo.
US 62 Bus.
||US 62 Business follows Pine Avenue from NY 104 to US 62. The route connects US 62 to the Pine Avenue commercial district and Hyde Park, a large city park northeast of downtown. US 62 Business was formerly NY 62A.
Unofficial special routes (those not formally recognized by the American Association of State Highway and Transportation Officials):
 See also
- ^ a b c Sources for route lengths:
- ^ a b c d e f g h United States Department of Agriculture (November 11, 1926). United States System of Highways (Map).
- ^ a b Automobile Legal Association (ALA) Automobile Green Book, 1930–31 and 1931–32 editions, (Scarborough Motor Guide Co., Boston, 1930 and 1931). The 1930–31 edition shows New York state routes prior to the 1930 renumbering
- ^ a b c Weingroff, Richard F. (July 27, 2009). "U.S. 6 – The Grand Army of the Republic Highway". Highway History. Federal Highway Administration. Retrieved July 20, 2010.
- ^ Automobile Blue Book 3. Chicago: Automobile Blue Book, Inc. 1929. p. 13. Retrieved August 30, 2010.
- ^ a b c Automobile Blue Book 1 (1927 ed.). Chicago: Automobile Blue Book, Inc. 1927. This edition shows U.S. Routes as they were first officially signed in 1927.
- ^ a b Esso (1938). New York Road Map for 1938 (Map). Cartography by General Drafting.
- ^ a b Standard Oil Company (1939). New York (Map). Cartography by General Drafting.
- ^ a b c Texas Oil Company (1934). Road Map of New York (Map). Cartography by Rand McNally and Company.
- ^ a b c d Sun Oil Company (1935). Road Map & Historical Guide – New York (Map). Cartography by Rand McNally and Company.
- ^ Kendall Refining Company (1931). New York (Map). Cartography by H.M. Gousha Company.
- ^ Texas Oil Company (1932). Texaco Road Map – New York (Map). Cartography by Rand McNally and Company.
- ^ Gulf Oil (1971). Ontario (Map). Cartography by Rolph-McNally Limited. http://www.ontarioroadmaps.ca/Oil_Companies/Gulf/1971_CDN/Municipalities/NiagaraFrontier.jpg. Retrieved April 4, 2009.
- ^ Texaco (1972). Ontario (Map). Cartography by H.M. Gousha Company. http://www.ontarioroadmaps.ca/Oil_Companies/Texaco/1972_US/Municipalities/Buffalo.jpg. Retrieved April 4, 2009.
- ^ Weingroff, Richard (January 9, 2009). "U.S. 202 – Maine to Delaware". Highway History. Federal Highway Administration. Retrieved April 13, 2010.
- ^ Gulf Refining Co. (1934). Rand McNally Official Road Map of New Jersey (Map).
- ^ a b Droz, Robert V. (June 1, 2010). "North-South routes – US 1 to US 101 – Odd numbered highways". U.S. Highways. Retrieved August 30, 2010.
- ^ "US 62 Business – Establishment" (PDF). American Association of State Highway and Transportation Officials. 2006. Retrieved April 3, 2009.