ic Ocean region), and 4
Inmarsat (Pacific and Atlantic Ocean regions) (2000)

Radio broadcast stations:
AM 4,789, FM 8,961, shortwave 19 (2006)

Radios:
575 million (1997)

Television broadcast stations:
2,218 (2006)

Televisions:
219 million (1997)

Internet country code:
.us

Internet hosts:
195,138,696 (2005)

Internet Service Providers (ISPs):
7,000 (2002 est.)

Internet users:
205,326,680 (2005)

Transportation United States

Airports:
14,858 (2006)

Airports - with paved runways:
total: 5,119
over 3,047 m: 189
2,438 to 3,047 m: 221
1,524 to 2,437 m: 1,426
914 to 1,523 m: 2,337
under 914 m: 946 (2006)

Airports - with unpaved runways:
total: 9,739
over 3,047 m: 1
2,438 to 3,047 m: 6
1,524 to 2,437 m: 157
914 to 1,523 m: 1,728
under 914 m: 7,847 (2006)

Heliports:
149 (2006)

Pipelines:
petroleum products 244,620 km; natural gas 548,665 km (2003)

Railways:
total: 226,605 km
standard gauge: 226,605 km 1.435-m gauge (2004)

Roadways:
total: 6,430,366 km
paved: 4,165,110 km (including 75,009 km of expressways)
unpaved: 2,265,256 km (2005)

Waterways:
41,009 km (19,312 km used for commerce)
note: Saint Lawrence Seaway of 3,769 km, including the Saint
Lawrence River of 3,058 km, shared with Canada (2004)

Merchant marine:
total: 465 ships (1000 GRT or over) 10,590,325 GRT/13,273,133 DWT
by type: barge carrier 7, bulk carrier 67, cargo 91, chemical tanker
20, container 76, passenger 19, passenger/cargo 58, petroleum tanker
76, refrigerated cargo 3, roll on/roll off 27, specialized tanker 1,
vehicle carrier 20
foreign-owned: 51 (Australia 2, Canada 4, Denmark 24, Germany 2,
Greece 1, Malaysia 4, Netherlands 4, Norway 2, Singapore 2, Sweden
5, Taiwan 1)
registered in other countries: 700 (Antigua and Barbuda 7, Australia
3, Bahamas 121, Belize 5, Bermuda 27, Cambodia 8, Canada 2, Cayman
Islands 41, Comoros 2, Cyprus 7, Greece 1, Honduras 1, Hong Kong 21,
Ireland 2, Isle of Man 3, Italy 15, North Korea 3, South Korea 7,
Liberia 93, Luxembourg 3, Malta 3, Marshall Islands 143, Netherlands
13, Netherlands Antilles 1, Norway 13, Panama 94, Peru 1,
Philippines 8, Portugal 1, Puerto Rico 3, Qatar 1, Russia 1, Saint
Vincent and the Grenadines 21, Sierra Leone 1, Singapore 7, Spain 7,
Sweden 1, Trinidad and Tobago 1, UK 6, Vanuatu 1, Wallis and Futuna
1) (2006)

Ports and terminal