Clark County is one of about 3,141 counties and county equivalents in the United States. It has 375.0 sq. miles in land area and a population density of 280.1 per square mile. In the last three decades of the 1900s its population grew by 27.1%. On the 2000 census form, 98.6% of the population reported only one race, with 6.6% of these reporting African-American. The population of this county is 1.9% Hispanic (of any race). The average household size is 2.45 persons compared to an average family size of 2.95 persons. In 2006 manufacturing was the largest of 20 major sectors. It had an average wage per job of $42,126. Per capita income grew by 14.3% 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)	105,035	543	Covered Employment	46,291	495
Growth (%) since 1990	19.7%	1001	Avg wage per job	$32,364	923
Households (2000)	38,751	516	Manufacturing - % all jobs in County	16.9%	981
Labor Force (persons) (2007)	55,020	532	Avg wage per job	$42,126	810
Unemployment Rate (2007)	4.3	1809	Transportation & Warehousing - % all jobs in County	10.3%	65
Per Capita Personal Income (2006)	$31,208	775	Avg wage per job	$44,525	426
Median Household Income (2005)	$43,158	808	Health Care, Social Assist. - % all jobs in County	7.3%	1615
Poverty Rate (2005)	10.7	2358	Avg wage per job	$38,022	440
H.S. Diploma or More - % of Adults 25+ (2000)	79.9	1,450	Finance and Insurance - % all jobs in County	3.5%	699
Bachelor's Deg. or More - % of Adults 25+ (2000)	14.3	1,613	Avg wage per job	$39,184	923