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 284.5 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 2008 manufacturing was the largest of 20 major sectors. It had an average wage per job of $42,867. Per capita income grew by 12.1% 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)	106,673	542	Covered Employment	48,170	485
Growth (%) since 1990	21.5%	955	Avg wage per job	$33,684	1094
Households (2000)	38,751	516	Manufacturing - % all jobs in County	16.1%	969
Labor Force (persons) (2008)	55,467	532	Avg wage per job	$42,867	969
Unemployment Rate (2008)	5.4	1641	Transportation & Warehousing - % all jobs in County	10.5%	69
Per Capita Personal Income (2007)	$32,661	882	Avg wage per job	$45,505	519
Median Household Income (2007)	$45,450	950	Health Care, Social Assist. - % all jobs in County	7.5%	1635
Poverty Rate (2007)	10.3	2450	Avg wage per job	$38,755	591
H.S. Diploma or More - % of Adults 25+ (2000)	79.9	1,450	Finance and Insurance - % all jobs in County	3.7%	579
Bachelor's Deg. or More - % of Adults 25+ (2000)	14.3	1,613	Avg wage per job	$39,243	1192