Washington County, Idaho Population 2020

Washington County, Idaho's estimated population is 10,361 with a growth rate of 0.97% in the past year according to the most recent United States census data. Washington County, Idaho is the 29th largest county in Idaho.

Year Population Growth Growth Rate
202010,3611000.97%
201910,2611000.98%
201810,1611000.99%
201710,061170.17%
201610,0441451.46%
20159,899-59-0.59%
20149,958390.39%
20139,919-111-1.11%
201210,030-105-1.04%
201110,135-42-0.41%
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%
2020 Growth Rate
0.97%
County Website
State
Founded
February 20, 1879
County Seat
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Washington County, Idaho Population Growth

Population by Race

Race Population Percentage
White8,69386.71%
Some Other Race8408.38%
Two or More Races3323.31%
American Indian and Alaska Native960.96%
Asian470.47%
Black or African American170.17%
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Washington County, Idaho Population Pyramid 2020

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Washington County, Idaho Median Age

45.4


Total

43.9


Male

46.8


Female

Washington County, Idaho Adults

There are 7,680 adults, (2,411 of whom are seniors) in Washington County, Idaho.

Washington County, Idaho Age Dependency

90.3

Age Dependency Ratio

45.8

Old Age Dependency Ratio

44.5

Child Dependency Ratio

Washington County, Idaho Sex Ratio

Female

5,059

50.46%

Male

4,966

49.54%

Washington County, Idaho Households and Families

Washington County, Idaho Renter vs Owner Occupied by Household Type

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Washington County, Idaho Household Types

Type Owner Renter
Married83.3%16.7%
All70.3%29.7%
Non Family64.5%35.5%
Male54.4%45.6%
Female40.1%59.9%

70.3%

Rate of Home Ownership

Type Count Average Size Owned
All4,0182.4670.3
Married1,9693.0983.3
Non Family1,3791.1464.5
Female4993.3440.1
Male1713.2854.4

3.09

Average Family Size

2.46

Average Household Size

5.6%

Unmarried (Opposite Sex)

0%

Unmarried (Same Sex)

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Washington County, Idaho Education

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Education Attained Count Percentage
Less Than 9th Grade4556.45%
9th to 12th Grade5437.69%
High School Graduate2,57636.49%
Some College2,01528.55%
Associates Degree4276.05%
Bachelors Degree6819.65%
Graduate Degree3625.13%
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Washington County, Idaho Educational Attainment by Race

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Name Total High School Bachelors
White5,7995,276977
Hispanic98862044
Other Race47831112
Multiple Races1821278
Native American7639
Asian473214
Black44

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 29.79%.

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Name Average Male Female
Overall$25,186$31,377$17,338
Less Than High School$16,207$15,172$16,716
High School Grad$23,201$30,612$14,013
Some College$27,009$32,572$22,969
Bachelors Degree$31,862$48,750$24,479
Graduate Degree$55,417$66,250$39,750

$25,186

Average Earnings

$31,377

Average Male

$17,338

Average Female

Washington County, Idaho Language

Washington County, Idaho Language by Age

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Washington County, Idaho Language

86.74% of Washington County, Idaho residents speak only English, while 13.26% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 12.64% of the population.

Washington County, Idaho Poverty

Washington County, Idaho Poverty by Race

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Name Total In Poverty Poverty Rate
White7,8651,12514.30%
Hispanic1,68733319.74%
Other84013015.48%
Multiple3298726.44%
Native902730.00%
Asian471021.28%

15.73%

Overall Poverty Rate

14.42%

Male Poverty Rate

17.01%

Female Poverty Rate

Poverty in Washington County, Idaho

The race most likely to be in poverty in Washington County, Idaho is Native, with 30.00% below the poverty level.

The race least likely to be in poverty in Washington County, Idaho is White, with 14.30% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 5.05%. Among those working part-time, it was 18.11%, and for those that did not work, the poverty rate was 15.53%.

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Name Poverty
Less Than High School18.78%
High School17.96%
Some College7.66%
Bachelors or Greater4.81%
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Name Poverty
Female Unemployed41.50%
Male Unemployed37.35%
Female Employed11.00%
Male Employed6.52%

Washington County, Idaho Income

Washington County, Idaho Income by Household Type

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Name Median Mean
Households$37,206$51,952
Families$46,809$60,964
Married Families$52,058-
Non Families$23,549$32,054
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Washington County, Idaho Marital Status

Washington County, Idaho Marital Status

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Marriage Rates

52.1%

Overall Marriage Rate

50.8%

Male Marriage Rate

53.4%

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 55-64, 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 Veterans

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732

Number of Veterans

676

Male Veterans

56

Female Veterans

War Veterans
Vietnam319
First Gulf War141
Second Gulf War139
Korea64
World War II28
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Age Group Veterans
65 to 74217
75+209
55 to 64136
18 to 3490
35 to 5480
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Name Veterans % of Total
White6559.58%
2 or More5026.60%
Hispanic353.17%
Indian2735.53%

Washington County, Idaho Veterans by Education

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10.44%

Veteran Poverty Rate

43.96%

Veteran Disability Rate

Washington County, Idaho Employment Status

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53.8%

Labor Force Participation

50.8%

Employment Rate

5.4%

Unemployment Rate

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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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43.14%

Born in Idaho

93.63%

Native Born

6.37%

Foreign Born

5.15%

Non Citizen

1.23%

Naturalized

Place of Birth

93.63% of Washington County, Idaho residents were born in the United States, with 43.14% having been born in Idaho. 5.15% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

  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