Duval County is one of about 3,141 counties and county equivalents in the United States. It has 773.7 sq. miles in land area and a population density of 1,097.5 per square mile. In the last three decades of the 1900s its population grew by 47.3%. On the 2000 census form, 98.0% of the population reported only one race, with 27.8% of these reporting African-American. The population of this county is 4.1% Hispanic (of any race). The average household size is 2.51 persons compared to an average family size of 3.06 persons. In 2007 health care and social assistance was the largest of 20 major sectors. It had an average wage per job of $44,624. Per capita income grew by 21.8% between 1996 and 2006 (adjusted for inflation).

People & Income Overview (By Place of Residence)	Value	Rank in U.S.	Industry Overview (2007) (By Place of Work)	Value	Rank in U.S.
Population (2007)	849,159	57	Covered Employment	465,562	51
Growth (%) since 1990	26.2%	725	Avg wage per job	$43,658	198
Households (2000)	303,747	57	Manufacturing - % all jobs in County	5.5%	2215
Labor Force (persons) (2007)	438,493	58	Avg wage per job	$52,266	363
Unemployment Rate (2007)	4.1	1982	Transportation & Warehousing - % all jobs in County	6.0%	293
Per Capita Personal Income (2006)	$36,616	291	Avg wage per job	$41,869	828
Median Household Income (2005)	$44,694	688	Health Care, Social Assist. - % all jobs in County	11.9%	856
Poverty Rate (2005)	12.1	2024	Avg wage per job	$44,624	167
H.S. Diploma or More - % of Adults 25+ (2000)	82.7	975	Finance and Insurance - % all jobs in County	9.6%	21
Bachelor's Deg. or More - % of Adults 25+ (2000)	21.9	568	Avg wage per job	$60,475	189