US highways 0-9,
with branch routes

Current
highways		 2-digit "main" routes 10
3-digit "branch" routes 10
3-digit numbering violations 2
Total 22
Historic
highways		 2-digit "main" routes 0
3-digit "branch" routes 6
Probably never signed 3
Total 9
Grand Total 31
For more information about these categories, or about the index below, please see the main index page.

 

Highway North or east terminus South or west terminus Historic Map
US 0 has never existed * - -
US 100 has never existed - -
US 400 (near Joplin, MO) Granada, CO 1 Map
US 1 Fort Kent, ME Key West, FL 1 Map
US 101 (near Olympia, WA) Los Angeles, CA 2 Map
US 201 (near Jackman, ME) Brunswick, ME 1 Map
US 301 [I] Fredericksburg, VA Lee Hall, VA -
US 301 [II] Glasgow, DE Sarasota, FL 6
US 401 [I] South Hill, VA Clarksville, VA 1
US 401 [II] Raleigh, NC Walterboro, SC -
US 401 [III] (near Wise, NC) Sumter, SC 1
US 501 Buena Vista, VA Myrtle Beach, SC 3
US 601 Mount Airy, NC (near Pineland, SC) 5
US 701 (near Four Oaks, NC) Georgetown, SC 2
US 2
(western segment)		 St. Ignace, MI Everett, WA 3 Map
US 102 (near Covington, MI) Crystal Falls, MI -
US 2
(eastern segment)		 Houlton, ME Rouses Point, NY -

Map
US 202 Bangor, ME (near New Castle, DE) 2
US 302 Portland, ME Montpelier, VT 2
US 3 Connecticut Lakes, NH Boston, MA 4 Map
US 4 Portsmouth, NH East Greenbush, NY 2

Map
US 104 Maple View, NY Niagara Falls, NY -
US 5 Derby Line, VT New Haven, CT 1 Map
US 6 Provincetown, MA Bishop, CA 3 Map
US 106 Narrowsburg, NY Wyalusing, PA -
US 206 Milford, PA Hammonton, NJ -
US 7 (near Highgate Springs, VT) Norwalk, CT 1 Map
US 8 Norway, MI Forest Lake, MN 2 Map
US 208 Carlton, MN Motley, MN - -
US 9 Champlain, NY Laurel, DE 4 Map
US 109 Hudson Falls, NY New York, NY -
US 209 Kingston, NY Millersburg, PA 2
US 309 Waverly, NY Philadelphia, PA 4

*When the US route system was being planned in 1925, AASHO used numbers ending in zero for the major east-west highways. However, they wanted to avoid using "US 0" for the northernmost east-west road, so they agreed to use "US 2" instead. In other words, US 2 occupies the corridor of the theoretical "US 0". (But no, that still doesn't justify the number for US 400!)

The legend for this chart is on the index page.