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
20213,85060.16%
20203,84460.16%
20193,83860.16%
20183,832-52-1.34%
20173,884380.99%
20163,846551.45%
20153,791-22-0.58%
20143,81380.21%
20133,805-15-0.39%
20123,820140.37%
20113,806-14-0.37%
20103,8203048.65%
19903,516-602-14.62%
19804,1182516.49%
19703,867-556-12.57%
19604,4232155.11%
19504,208-458-9.82%
19404,666-572-10.92%
19305,238-613-10.48%
19205,8510.00%
2021 Growth Rate
0.16%
County Website
State
Founded
March 3, 1911
County Seat
2010 Population
3,820
Growth Since 2010
0.79%
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Lewis County, Idaho Population Growth

Population by Race

Race Population Percentage
White3,32786.69%
American Indian and Alaska Native3218.36%
Two or More Races1062.76%
Asian531.38%
Some Other Race250.65%
Black or African American50.13%
Native Hawaiian and Other Pacific Islander10.03%
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Lewis County, Idaho Population by Race

Lewis County, Idaho Population Pyramid $2021

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Lewis County, Idaho Median Age

48.6


Total

47.1


Male

49.6


Female

Lewis County, Idaho Adults

There are 2,970 adults, (947 of whom are seniors) in Lewis County, Idaho.

Lewis County, Idaho Age Dependency

89.7

Age Dependency Ratio

46.8

Old Age Dependency Ratio

42.9

Child Dependency Ratio

Lewis County, Idaho Sex Ratio

Female

1,938

50.50%

Male

1,900

49.50%

Lewis County, Idaho Population by Age

Lewis County, Idaho Renter vs Owner Occupied by Household Type

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Lewis County, Idaho Household Types

Type Owner Renter
Married85.8%14.2%
All69.4%30.6%
Non Family56.8%43.2%
Male50.7%49.3%
Female50.5%49.5%

69.4%

Rate of Home Ownership

Lewis County, Idaho Households and Families

Type Count Average Size Owned
All1,6462.3169.4
Married7532.9985.8
Non Family7271.2356.8
Female954.1850.5
Male713.6650.7

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 Grade1063.90%
9th to 12th Grade2077.62%
High School Graduate80529.64%
Some College84130.96%
Associates Degree2719.98%
Bachelors Degree35413.03%
Graduate Degree1324.86%
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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
White2,3932,133447
Native American17414724
Hispanic7560
2+ Races513613
Asian3128
Other Race107
Black222

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

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Name Average Male Female
Overall$28,306$33,935$21,818
Less Than 9th Grade$$$
High School Graduate$25,900$32,014$16,339
Some College$26,285$31,063$22,167
Bachelors Degree$36,250$51,458$29,375
Graduate Degree$57,292$54,688$57,396

$28,306

Average Earnings

$33,935

Average Male

$21,818

Average Female

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
White3,19844513.91%
Native30413343.75%
Multiple1023130.39%
Hispanic1702212.94%
Asian5347.55%
Islander11100.00%

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

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Name Poverty
Less Than 9th Grade23.32%
High School14.36%
Some College13.53%
Bachelors or Greater6.38%

Lewis County, Idaho Poverty Rate by Education

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Rate Poverty
Male Unemployed38.46%
Female Unemployed37.50%
Female Employed8.80%
Male Employed5.70%

Lewis County, Idaho Poverty Rate by Employment Status and Sex

Lewis County, Idaho Income by Household Type

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Name Median Mean
Households$41,198$54,285
Families$55,208$67,466
Married Families$64,508-
Non Families$22,535$35,953
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Income by Household Type

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

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387

Number of Veterans

348

Male Veterans

39

Female Veterans

War Veterans
Vietnam185
Korea39
First Gulf War23
Second Gulf War22
World War II7

Lewis County, Idaho Veterans by War

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Age Group Veterans
75+121
65 to 74114
55 to 6493
35 to 5451
18 to 348

Lewis County, Idaho Veterans by Age

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Name Veterans % of Total
White37114.19%
Native American115.56%
Hispanic54.95%
Asian37.14%
Other Race216.67%

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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53.86%

Born in Lewis County, Idaho

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

  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