Miami-Dade County is one of about 3,141 counties and county equivalents in the United States. It has 1,946.1 sq. miles in land area and a population density of 1,232.3 per square mile. In the last three decades of the 1900s its population grew by 77.7%. On the 2000 census form, 96.2% of the population reported only one race, with 20.3% of these reporting African-American. The population of this county is 57.3% Hispanic (of any race). The average household size is 2.84 persons compared to an average family size of 3.35 persons. In 2008 retail trade was the largest of 20 major sectors. It had an average wage per job of $27,663. Per capita income grew by 27.6% between 1997 and 2007 (adjusted for inflation).

People & Income Overview (By Place of Residence)	Value	Rank in U.S.	Industry Overview (2008) (By Place of Work)	Value	Rank in U.S.
Population (2008)	2,398,245	9	Covered Employment	1,006,274	10
Growth (%) since 1990	23.8%	853	Avg wage per job	$45,142	192
Households (2000)	776,774	10	Manufacturing - % all jobs in County	4.4%	2324
Labor Force (persons) (2008)	1,212,446	7	Avg wage per job	$39,809	1271
Unemployment Rate (2008)	5.8	1391	Transportation & Warehousing - % all jobs in County	6.0%	305
Per Capita Personal Income (2007)	$36,081	479	Avg wage per job	$49,016	301
Median Household Income (2007)	$43,495	1197	Health Care, Social Assist. - % all jobs in County	12.3%	862
Poverty Rate (2007)	15.3	1307	Avg wage per job	$44,083	259
H.S. Diploma or More - % of Adults 25+ (2000)	67.9	2,640	Finance and Insurance - % all jobs in County	4.6%	298
Bachelor's Deg. or More - % of Adults 25+ (2000)	21.7	584	Avg wage per job	$79,130	67