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World Population Review
Lewis County, Idaho Population 2021
Lewis County, Idaho's estimated population is 3,850 with a growth rate of 0.16% in the past year according to the most recent United States census data. Lewis County, Idaho is the 42nd largest county in Idaho. The 2010 Population was 3,820 and has seen a growth of 0.79% since this time.
Note: 2020 and 2021 data is projected
| Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2021 | 3,850 | 6 | 0.16% |
| 2020 | 3,844 | 6 | 0.16% |
| 2019 | 3,838 | 6 | 0.16% |
| 2018 | 3,832 | -52 | -1.34% |
| 2017 | 3,884 | 38 | 0.99% |
| 2016 | 3,846 | 55 | 1.45% |
| 2015 | 3,791 | -22 | -0.58% |
| 2014 | 3,813 | 8 | 0.21% |
| 2013 | 3,805 | -15 | -0.39% |
| 2012 | 3,820 | 14 | 0.37% |
| 2011 | 3,806 | -14 | -0.37% |
| 2010 | 3,820 | 304 | 8.65% |
| 1990 | 3,516 | -602 | -14.62% |
| 1980 | 4,118 | 251 | 6.49% |
| 1970 | 3,867 | -556 | -12.57% |
| 1960 | 4,423 | 215 | 5.11% |
| 1950 | 4,208 | -458 | -9.82% |
| 1940 | 4,666 | -572 | -10.92% |
| 1930 | 5,238 | -613 | -10.48% |
| 1920 | 5,851 | 0.00% |
2021 Growth Rate
0.16%
County Website
State
Founded
March 3, 1911
County Seat
Lat./Long.
2010 Population
3,820
Growth Since 2010
0.79%
Lewis County, Idaho Population Growth
| Race | Population | Percentage |
|---|---|---|
| White | 3,327 | 86.69% |
| American Indian and Alaska Native | 321 | 8.36% |
| Two or More Races | 106 | 2.76% |
| Asian | 53 | 1.38% |
| Some Other Race | 25 | 0.65% |
| Black or African American | 5 | 0.13% |
| Native Hawaiian and Other Pacific Islander | 1 | 0.03% |
Lewis County, Idaho Population by Race
Lewis County, Idaho Population Pyramid $2021
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Lewis County, Idaho Population by Age
Lewis County, Idaho Households and Families
| Type | Count | Average Size | Owned |
|---|---|---|---|
| All | 1,646 | 2.31 | 69.4 |
| Married | 753 | 2.99 | 85.8 |
| Non Family | 727 | 1.23 | 56.8 |
| Female | 95 | 4.18 | 50.5 |
| Male | 71 | 3.66 | 50.7 |
3.07
Average Family Size
2.31
Average Household Size
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Lewis County, Idaho Households by Type
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| Education Attained | Count | Percentage |
|---|---|---|
| Less Than 9th Grade | 106 | 3.90% |
| 9th to 12th Grade | 207 | 7.62% |
| High School Graduate | 805 | 29.64% |
| Some College | 841 | 30.96% |
| Associates Degree | 271 | 9.98% |
| Bachelors Degree | 354 | 13.03% |
| Graduate Degree | 132 | 4.86% |
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Lewis County, Idaho Educational Attainment by Sex (over 25)
Lewis County, Idaho Educational Attainment by Race
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| Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 2,393 | 2,133 | 447 |
| Native American | 174 | 147 | 24 |
| Hispanic | 75 | 60 | |
| 2+ Races | 51 | 36 | 13 |
| Asian | 31 | 28 | |
| Other Race | 10 | 7 | |
| Black | 2 | 2 | 2 |
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 black people with a rate of 100.00%.
Lewis County, Idaho Educational Attainment by Race
Lewis County, Idaho Earnings by Educational Attainment
Lewis County, Idaho Language by Age
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Lewis County, Idaho Language
96.17% of Lewis County, Idaho residents speak only English, while 3.83% speak other languages. The non-English language spoken by the largest group is Other languages, which is spoken by 1.46% of the population.
Lewis County, Idaho Language
Lewis County, Idaho Poverty by Race
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| Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| White | 3,198 | 445 | 13.91% |
| Native | 304 | 133 | 43.75% |
| Multiple | 102 | 31 | 30.39% |
| Hispanic | 170 | 22 | 12.94% |
| Asian | 53 | 4 | 7.55% |
| Islander | 1 | 1 | 100.00% |
16.19%
Overall Poverty Rate
14.80%
Male Poverty Rate
17.53%
Female Poverty Rate
Poverty in Lewis County, Idaho
The race most likely to be in poverty in Lewis County, Idaho is Islander, with 100.00% below the poverty level.
The race least likely to be in poverty in Lewis County, Idaho is Asian, with 7.55% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 2.73%. Among those working part-time, it was 20.00%, and for those that did not work, the poverty rate was 21.02%.
Lewis County, Idaho Poverty
Lewis County, Idaho Poverty Rate by Education
Lewis County, Idaho Marital Status
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Marriage Rates
50.9%
Overall Marriage Rate
49.8%
Male Marriage Rate
51.8%
Female Marriage Rate
Lewis County, Idaho Married by Age and Sex
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Lewis 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.
Lewis County, Idaho Marital Status by Race
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Lewis County, Idaho Marital Status
Lewis County, Idaho Veterans by War
Lewis County, Idaho Veterans by Age
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| Name | Veterans | % of Total |
|---|---|---|
| White | 371 | 14.19% |
| Native American | 11 | 5.56% |
| Hispanic | 5 | 4.95% |
| Asian | 3 | 7.14% |
| Other Race | 2 | 16.67% |
Lewis County, Idaho Veterans by Race
Lewis County, Idaho Veterans by Education
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11.37%
Veteran Poverty Rate
52.20%
Veteran Disability Rate
Lewis County, Idaho Veterans by Education
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50.2%
Labor Force Participation
47.2%
Employment Rate
6%
Unemployment Rate
Lewis County, Idaho Employment by Age
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Lewis County, Idaho Employment by Race
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Lewis 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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97.81%
Native Born
2.19%
Foreign Born
0.94%
Non Citizen
1.25%
Naturalized
Place of Birth
97.81% of Lewis County, Idaho residents were born in the United States, with 53.86% having been born in Idaho. 0.94% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.
Lewis County, Idaho Place of Birth
- US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
- Population of States and Counties of the United States: 1790 - 1990