Washington County, Idaho Population 2021

Washington County, Idaho's estimated population is 10,352 with a growth rate of 0.77% in the past year according to the most recent United States census data. Washington County, Idaho is the 30th largest county in Idaho. The 2010 Population was 10,177 and has seen a growth of 1.72% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Growth Rate
202110,352790.77%
202010,273790.77%
201910,194790.78%
201810,115640.64%
201710,051190.19%
201610,0321411.43%
20159,891-64-0.64%
20149,955390.39%
20139,916-114-1.14%
201210,030-106-1.05%
201110,136-41-0.40%
201010,1771,62719.03%
19908,550-253-2.87%
19808,8031,17015.33%
19707,633-745-8.89%
19608,378-198-2.31%
19508,576-277-3.13%
19408,85389111.19%
19307,962-1,462-15.51%
19209,424-1,677-15.11%
191011,1014,21961.30%
19006,8823,04679.41%
18903,8362,957336.41%
18808790.00%
2021 Growth Rate
0.77%
County Website
State
Founded
February 20, 1879
County Seat
2010 Population
10,177
Growth Since 2010
1.72%
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Washington County, Idaho Population Growth

Population by Race

Race Population Percentage
White8,83487.84%
Some Other Race7387.34%
Two or More Races3293.27%
American Indian and Alaska Native1000.99%
Asian370.37%
Black or African American190.19%
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Washington County, Idaho Population by Race

Washington County, Idaho Population Pyramid $2021

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Washington County, Idaho Median Age

45.4


Total

43.9


Male

46.6


Female

Washington County, Idaho Adults

There are 7,712 adults, (2,475 of whom are seniors) in Washington County, Idaho.

Washington County, Idaho Age Dependency

92

Age Dependency Ratio

47.3

Old Age Dependency Ratio

44.8

Child Dependency Ratio

Washington County, Idaho Sex Ratio

Female

5,133

51.04%

Male

4,924

48.96%

Washington County, Idaho Population by Age

Washington County, Idaho Renter vs Owner Occupied by Household Type

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Washington County, Idaho Household Types

Type Owner Renter
Married84.4%15.6%
Male79.9%20.1%
All72.5%27.5%
Non Family64.8%35.2%
Female42.6%57.4%

72.5%

Rate of Home Ownership

Washington County, Idaho Households and Families

Type Count Average Size Owned
All4,0352.4672.5
Married2,0493.0284.4
Non Family1,3271.1564.8
Female5053.2442.6
Male1543.6879.9

3.04

Average Family Size

2.46

Average Household Size

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Washington County, Idaho Households by Type

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Education Attained Count Percentage
Less Than 9th Grade4746.66%
9th to 12th Grade5928.31%
High School Graduate2,40633.79%
Some College1,91626.91%
Associates Degree5697.99%
Bachelors Degree72210.14%
Graduate Degree4426.21%
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Washington County, Idaho Educational Attainment by Sex (over 25)

Washington County, Idaho Educational Attainment by Race

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Race Total High School Bachelors
White5,8275,2131,075
Hispanic1,01165145
Other Race4512658
2+ Races19516525
Native American9844
Asian372919
Black22

The highest rate of high school graduation is among black people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 51.35%.

Washington County, Idaho Educational Attainment by Race

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Name Average Male Female
Overall$25,161$31,515$17,280
Less Than 9th Grade$16,092$15,444$16,913
High School Graduate$22,633$31,398$13,269
Some College$26,875$37,375$19,511
Bachelors Degree$31,198$48,125$20,556
Graduate Degree$47,446$51,563$46,750

$25,161

Average Earnings

$31,515

Average Male

$17,280

Average Female

Washington County, Idaho Earnings by Educational Attainment

Washington County, Idaho Language by Age

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Washington County, Idaho Language

88.51% of Washington County, Idaho residents speak only English, while 11.49% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 10.77% of the population.

Washington County, Idaho Language

Washington County, Idaho Poverty by Race

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Name Total In Poverty Poverty Rate
White7,8651,02112.98%
Hispanic1,70028016.47%
Other73814319.38%
Asian371335.14%
Native9688.33%
Multiple32761.83%

13.33%

Overall Poverty Rate

11.61%

Male Poverty Rate

14.96%

Female Poverty Rate

Poverty in Washington County, Idaho

The race most likely to be in poverty in Washington County, Idaho is Asian, with 35.14% below the poverty level.

The race least likely to be in poverty in Washington County, Idaho is Multiple, with 1.83% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.75%. Among those working part-time, it was 18.84%, and for those that did not work, the poverty rate was 11.05%.

Washington County, Idaho Poverty

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Name Poverty
High School17.22%
Less Than 9th Grade14.27%
Some College6.88%
Bachelors or Greater4.15%

Washington County, Idaho Poverty Rate by Education

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Rate Poverty
Female Unemployed37.76%
Male Unemployed14.29%
Female Employed9.07%
Male Employed6.32%

Washington County, Idaho Poverty Rate by Employment Status and Sex

Washington County, Idaho Income by Household Type

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Name Median Mean
Households$40,992$55,317
Families$48,767$63,509
Married Families$55,022-
Non Families$24,803$33,689
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Income by Household Type

Washington County, Idaho Marital Status

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Marriage Rates

53.9%

Overall Marriage Rate

52.2%

Male Marriage Rate

55.5%

Female Marriage Rate

Washington County, Idaho Married by Age and Sex

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Washington County, Idaho Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 55-64.

Washington County, Idaho Marital Status by Race

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Washington County, Idaho Marital Status

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706

Number of Veterans

626

Male Veterans

80

Female Veterans

War Veterans
Vietnam267
Second Gulf War157
First Gulf War118
Korea67
World War II19

Washington County, Idaho Veterans by War

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Age Group Veterans
75+223
65 to 74189
55 to 64132
35 to 5487
18 to 3475

Washington County, Idaho Veterans by Age

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Name Veterans % of Total
White6459.37%
Hispanic343.06%
Native American3232.00%
2+ Races2914.65%

Washington County, Idaho Veterans by Race

Washington County, Idaho Veterans by Education

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4.72%

Veteran Poverty Rate

45.64%

Veteran Disability Rate

Washington County, Idaho Veterans by Education

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54.1%

Labor Force Participation

51.8%

Employment Rate

4.2%

Unemployment Rate

Washington County, Idaho Employment by Age

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Washington County, Idaho Employment by Race

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Washington County, Idaho Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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41.59%

Born in Washington County, Idaho

93.71%

Native Born

6.29%

Foreign Born

4.69%

Non Citizen

1.60%

Naturalized

Place of Birth

93.71% of Washington County, Idaho residents were born in the United States, with 41.59% having been born in Idaho. 4.69% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Washington County, Idaho Place of Birth

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990

Sources