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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

United States Fast Facts

Tuesday, January 3, 2012

United States Fast Facts

Transportation System Extent

All public roads: 3.97 million miles
Interstate: 46,508 miles
Road bridges: 590,111
Class I railroad trackage: 99,126 miles
Inland waterways: 29,627 miles
Public use airports: 5,286 (628 certificated for air carrier operations)

Vehicles and Conveyances

Automobiles registered: 135.7 million
Light trucks registered: 87.0 million
Heavy trucks registered: 7.9 million
Buses registered: 0.8 million
Motorcycles registered: 5.4 million
Rail transit systems: 21 commuter rail, 14 heavy rail (subway), 28 light rail
Recreational boats registered: 12.8 million


Land area: 3.5 million sq. miles1
Percent of land area owned by federal government: 29.6
Persons per square mile: 79.61
Highest point: Mt. McKinley, AK
(20,320 ft.)
Lowest point: Death Valley, CA (-282 ft.)

Goverment Subdivisions

County governments: 3,0342
Municipal governments: 19,4292
Town governments: 16,5042
Congressional districts: 435


Population: 290.8 million
Percent urban population: 791


Gross domestic product: $11.0 trillion
Civilian labor force: 146.5 million
Median household income: $43,318

Commuting (percent of workers)1

Car, truck, or vandrove alone: 75.7
Car, truck, or vancarpooled: 12.2
Public transportation (including taxi): 4.7
Walked: 2.9
Other means: 1.2
Worked at home: 3.3

U.S. Department of Transportation

Bureau of Transportation Statistics
400 7th Street, SW, Washington, DC 20590
(202) 366-DATA (3282)

1 2000

2 2002

NOTE: Data are for 2003 unless otherwise noted.