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Introduction
America’s transportation system continues to
change along with the population, work force, and economy. The
following table puts those changes in perspective:
Excel | CSV
| Resident population (thousands) |
226,542 |
288,369 |
| Total area (thousands of square miles)a |
3,619 |
3,718 (2000) |
| Total civilian labor force (thousands) |
106,940 |
144,863 |
| Real gross domestic productb |
$4.9 trillion |
$9.4 trillion |
| Median household incomeb,
d |
$32,661 (1984) |
$38,186 |
| Average household incomeb,
c,
d |
$34,189 (1984) |
$44,507 |
| Average household expendituresb,
c,
d |
$32,020 (1984) |
$36,626 |
| Number of households (thousands) |
80,776 |
109,297 |
| Life expectancy at birth (years) |
73.7 |
P77.2 (2001) |
a 1980 data include inland water only. Since 1990, data reflect a new database and include inland water, coastal water, and Great Lakes, but exclude
territorial water. The Census Bureau tabulates area data for the decennial census years only.
b Expressed in 1996 chained dollars (see Glossary for definition).
c Earliest year available is 1984.
d BTS computations, December 2003.
Key: P = preliminary data.
Sources: Population, area, number of households—U.S. Department of
Commerce (USDOC), U.S. Census Bureau, Statistical Abstract of the United States: 2002,
available at http://www.census.gov, as of Oct. 2003. GDP—USDOC, Bureau of
Economic Analysis, available at http://www.bea.gov, as of Dec. 2003. Median household
income—USDOC, Census, available at http://www.census.gov, as of Oct. 2003. Average
household income, average household expenditures, labor force—U.S. Department of Labor,
Bureau of Labor Statistics, available at http://www.bls.gov, as of Dec. 2003.
Life expectancy—Centers for Disease Control and Prevention, available
at http://www.cdc.gov, as of Oct. 2003.
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