United States Fast Facts
Data are for 2006 unless otherwise noted.
Transportation System Extent
All public roads: 4.02 million miles
Interstate: 46,630 miles
Road bridges: 599,766 1
Class I railroad trackage: 94,801 miles
Inland waterways: 29,627 miles 1
Public use airports: 5,233 (604 certificated for air carrier operations)
Vehicles and Conveyances
Automobiles registered: 135.4 million
Light trucks registered: 99.1 million
Heavy trucks registered: 8.8 million
Buses registered: 0.8 million
Motorcycles registered: 6.7 million
Rail transit systems 2: 22 commuter rail, 15 heavy rail (subway), 29 light rail
Recreational boats registered: 12.7 million
Geographic
Land area: 3.5 million sq. miles 3
Percent of land area owned by federal government: 28.8 4
Persons per square mile: 84.6
Highest point: Mt. McKinley, AK (20,320 ft.)
Lowest point: Death Valley, CA (–282 ft.)
Government Subdivisions
County governments: 3,034 5
Municipal governments: 19,429 5
Town governments: 16,504 5
Congressional districts: 435
Demographic
Population: 299.4 million
Percent urban population: 79 3
Socioeconomic
Gross domestic product: $13.2 trillion ($13.8 trillion 1)
Civilian labor force: 151.4 million (153.1 million 1)
Median household income: $48,451
Commuting (percent of workers)
Car, truck, or van—drove alone: 76.0
Car, truck, or van—carpooled: 10.7
Public transportation: 4.8
Walked: 2.9
Taxicab, motorcycle, bicycled or other means: 1.7
Worked at home: 3.9
12007
22005
32000
42004
52002
U.S. Department of Transportation
Research and Innovative Technology Administration
Bureau of Transportation Statistics
1200 New Jersey Ave., SE
Washington, DC 20590
1-800-853-1351
http://www.bts.gov
Sources
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