Union County is one of about 3,141 counties and county equivalents in the United States. It has 240.3 sq. miles in land area and a population density of 63.0 per square mile. In the last three decades of the 1900s its population grew by 65.7%. On the 2000 census form, 98.5% of the population reported only one race, with 22.8% of these reporting African-American. The population of this county is 3.5% Hispanic (of any race). The average household size is 2.76 persons compared to an average family size of 3.13 persons. In 2008 transportation and warehousing was the largest of 20 major sectors. It had an average wage per job of $31,384. Per capita income grew by 11.3% 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)	15,141	2088	Covered Employment	4,071	2155
Growth (%) since 1990	47.7%	326	Avg wage per job	$31,992	1460
Households (2000)	3,367	2544	Manufacturing - % all jobs in County	4.4%	2324
Labor Force (persons) (2008)	5,243	2349	Avg wage per job	$30,209	2304
Unemployment Rate (2008)	4.8	2005	Transportation & Warehousing - % all jobs in County	8.4%	125
Per Capita Personal Income (2007)	$17,297	3089	Avg wage per job	$31,384	2727
Median Household Income (2007)	$41,124	1531	Health Care, Social Assist. - % all jobs in County	D	N/A
Poverty Rate (2007)	21.5	436	Avg wage per job	D	N/A
H.S. Diploma or More - % of Adults 25+ (2000)	72.5	2,241	Finance and Insurance - % all jobs in County	0.4%	2749
Bachelor's Deg. or More - % of Adults 25+ (2000)	7.5	3,049	Avg wage per job	$28,824	2577