Urbanization in the United States from 1945
DATA	1945	1950	1960	1970	1980	1990	2000	2010	1950-2010
Urban Land Area (Square Miles)	23,456	30,048	40,238	54,103	73,930	87,376	92,505	106,386	207.9%
Urban Population	86,513	96,468	125,269	149,647	167,051	187,053	222,353	249,253	130.5%
Urban Households (Estimated)	23,736	27,881	36,884	46,668	59,828	69,152	83,340	96,237	198.9%
DENSITY (PER SQUARE MILE)
Popuation Density	3,688	3,211	3,113	2,766	2,260	2,141	2,404	2,343	-25.1%
Household Density	1,012	928	917	863	809	791	901	905	-2.9%
CHANGE
Urban Land Area		28.1%	33.9%	34.5%	36.6%	18.2%	5.9%	15.0%	207.9%
Urban Population		11.5%	29.9%	19.5%	11.6%	12.0%	18.9%	12.1%	130.5%
Urban Households		17.5%	32.3%	26.5%	28.2%	15.6%	20.5%	15.5%	198.9%
Population Density		-13.0%	-3.0%	-11.2%	-18.3%	-5.3%	12.3%	-2.5%	-25.1%
Household Density		-8.3%	-1.2%	-5.9%	-6.2%	-2.2%	13.8%	0.4%	-2.9%
ANNUAL CHANGE
Urban Land Area		5.08%	2.96%	3.01%	3.17%	1.69%	0.57%	1.41%	1.89%
Urban Population		2.20%	2.65%	1.79%	1.11%	1.14%	1.74%	1.15%	1.40%
Urban Households		3.27%	2.84%	2.38%	2.52%	1.46%	1.88%	1.45%	1.84%
Population Density		-2.74%	-0.31%	-1.18%	-2.00%	-0.54%	1.17%	-0.26%	-0.48%
Household Density		-1.72%	-0.12%	-0.61%	-0.64%	-0.22%	1.30%	0.04%	-0.05%
RATIOS
Land Area/Population Change		2.31	1.12	1.68	2.87	1.48	0.33	1.23	1.35
Land Area/Household Change		1.55	1.04	1.26	1.26	1.15	0.30	0.97	1.03
NOTES
Estimated from US Census Bureau & Department of Agriculture Economic Reseasrch Service data
Land Area: Actual
Population & Households: 000s
Density: Actual
Definitional changes occured during the period: Largest Change 1990-2000: Estimated reductiion in urban land 7% due to new 2000 definition
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