total: 240,000 km mainline routes (nongovernment owned), standard gauge (1.435 m) (1989)
See also Transportation in the United States.
... town. The population density is 1,549.2/km² (4,010.1/mi²). There are 6,949 housing units at an average density of 546.4/km² (1,414.4/mi²). The ...