Davidson County is one of about 3,141 counties and county equivalents in the United States. It has 502.3 sq. miles in land area and a population density of 1,233.6 per square mile. In the last three decades of the 1900s its population grew by 27.2%. On the 2000 census form, 98.0% of the population reported only one race, with 25.9% of these reporting African-American. The population of this county is 4.6% Hispanic (of any race). The average household size is 2.30 persons compared to an average family size of 2.96 persons. In 2006 health care and social assistance was the largest of 20 major sectors. It had an average wage per job of $49,509. Per capita income grew by 21.1% between 1996 and 2006 (adjusted for inflation).

People & Income Overview (By Place of Residence)	Value	Rank in U.S.	Industry Overview (2006) (By Place of Work)	Value	Rank in U.S.
Population (2007)	619,626	97	Covered Employment	446,712	56
Growth (%) since 1990	21.3%	936	Avg wage per job	$43,398	152
Households (2000)	237,405	86	Manufacturing - % all jobs in County	6.1%	2150
Labor Force (persons) (2007)	314,658	96	Avg wage per job	$47,404	497
Unemployment Rate (2007)	3.8	2228	Transportation & Warehousing - % all jobs in County	4.8%	477
Per Capita Personal Income (2006)	$42,092	140	Avg wage per job	$43,785	474
Median Household Income (2005)	$40,804	1076	Health Care, Social Assist. - % all jobs in County	12.2%	774
Poverty Rate (2005)	14.7	1441	Avg wage per job	$49,509	46
H.S. Diploma or More - % of Adults 25+ (2000)	81.5	1,174	Finance and Insurance - % all jobs in County	4.2%	400
Bachelor's Deg. or More - % of Adults 25+ (2000)	30.5	201	Avg wage per job	$68,598	90