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 1,099.9 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 2008 health care and social assistance was the largest of 20 major sectors. It had an average wage per job of $46,294. Per capita income grew by 23.3% 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)	850,962	59	Covered Employment	460,740	51
Growth (%) since 1990	26.4%	745	Avg wage per job	$43,733	246
Households (2000)	303,747	57	Manufacturing - % all jobs in County	5.6%	2162
Labor Force (persons) (2008)	447,838	59	Avg wage per job	$53,235	375
Unemployment Rate (2008)	6.1	1219	Transportation & Warehousing - % all jobs in County	6.0%	305
Per Capita Personal Income (2007)	$38,462	331	Avg wage per job	$42,489	859
Median Household Income (2007)	$49,175	646	Health Care, Social Assist. - % all jobs in County	12.5%	827
Poverty Rate (2007)	12.4	1935	Avg wage per job	$46,294	169
H.S. Diploma or More - % of Adults 25+ (2000)	82.7	975	Finance and Insurance - % all jobs in County	9.8%	19
Bachelor's Deg. or More - % of Adults 25+ (2000)	21.9	568	Avg wage per job	$61,546	185