Columbia County, Washington

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Columbia County is a county located in the United States of Washington. The population of the county was 4064 as per the 2000 census data. As of July 2008, the estimated population of the county is 3990, giving it the second smallest population among Washington's county. The county has a total area of 873.53 sq mi (2262.43 sq km), of which, 868.81 square miles (2250.21 sq km) of it is land and 4.71 square miles (12.2 sq km) of it is water, it is the ninth smallest by area in the U.S. state of Washington.


According to 2000 Census Bureau, there were 4064 residents, 1687 households, and 1139 families in the county. The population density was 4.7 people per square mile (1.81/kmē), making it the fourth least densely populated county in Washington. There were 2018 housing units at an average density of 2.3 per square mile (0.89/kmē). The average household size was 2.36 people, and the average family size was 2.89 people. In the county the population was distributed as follows: 23.9% under the age of 18, 7% from 18 to 24, 22.8% from 25 to 44, 27.7% from 45 to 64, and 18.5% who were 65 or older. For every 100 females there were 95.2 males. For every 100 females age 18 and over, there were 94.8 males. Its population in July 2008 was estimated to be about 3990, The racial or ethnic makeup of the county was 95.36% White, 0.33% Black or African American, 1.25% American Indian, 0.83% Asian, 0.05% Native Hawaiian, and 2.18% from two or more races.

Population 2000-2008

School Enrollment 2000

GDP 2000

The median income for a household in the county was $33500, making it the eighth poorest county by median household income among the Washington. The median income for a family in the county was $44038, it is Washington's 23rd wealthiest county by median family income. The per capita income for the county was $17374, it is 23rd wealthiest county by per capita income in Washington.

In 2000, 918 pupils and students, of which 438 are male and 480 are female, 22.59% of the total population, are in the education system. Of which, total enrollment of student are in, 63 nursery or pri school, 37 kindergarten, 461 elementary school, 261 high school and 96 College graduate school.

Rank	City	County	Total Area mi2	Land Area mi2	Water Area mi2	Population	Density mi2	Per capita Income	House hold Income
1	Dayton City	Columbia County	1.47	1.47	0	2655	1803	15925	31409
2	Starbuck Town	Columbia County	0.2	0.2	0	130	639.6	14770	18125

Year	Population
April 2000 census	4064
April 2000 Estimate	4064
July 2000 Estimate	4071
July 2001 Estimate	4046
July 2002 Estimate	4018
July 2003 Estimate	4033
July 2004 Estimate	4067
July 2005 Estimate	4020
July 2006 Estimate	3950
July 2007 Estimate	3964
July 2008 Estimate	3990

School	Male	Female	Total
Nursery school	34	29	63
Kindergarten	21	16	37
Elementary school	232	229	461
High school	113	148	261
College or graduate school	38	58	96

Place	Median household income	Median family income	Per capita income
Columbia County, Washington	$33500	$44038	$17374
Washington, United States	$45776	$53760	$22973
United States	$41994	$50046	$21587