Lewiston, Idaho Population 2020

33,155
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Lewiston is a city located in Idaho. With a 2020 population of 33,155, it is the 10th largest city in Idaho and the 1182nd largest city in the United States. Lewiston is currently growing at a rate of 0.51% annually and its population has increased by 3.95% since the most recent census, which recorded a population of 31,894 in 2010. Spanning over 18 miles, Lewiston has a population density of 1,916 people per square mile.

The average household income in Lewiston is $64,421 with a poverty rate of 14.49%. The median rental costs in recent years comes to $720 per month, and the median house value is $178,500. The median age in Lewiston is 40.8 years, 39.2 years for males, and 42.4 years for females. For every 100 females there are 94.7 males.

Lewiston Demographics

According to the most recent ACS, the racial composition of Lewiston was:

  • White: 94.43%
  • Two or more races: 2.39%
  • Native American: 1.56%
  • Asian: 0.84%
  • Other race: 0.36%
  • Black or African American: 0.29%
  • Native Hawaiian or Pacific Islander: 0.13%
The current population of Lewiston, Idaho is 33,155, based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 32,817.The last official US Census in 2010 recorded the population at 31,894.

Lewiston, Idaho Population 2020

2019 and 2020 population is estimated by projecting the raw 2018 numbers.

Year Total Population Growth Annual Growth Rate
202063,2921370.22%
201963,1551370.22%
201863,0181370.22%
201762,8814460.71%
201662,4353330.53%
201562,102780.13%
201462,0241030.17%
201361,9215150.83%
201261,40660.01%
201161,4003600.59%
201061,0400.00%

Population by Race

Race Population Percentage
White30,78794.43%
Two or More Races7802.39%
American Indian and Alaska Native5071.56%
Asian2740.84%
Some Other Race1190.36%
Black or African American960.29%
Native Hawaiian and Other Pacific Islander410.13%
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Lewiston Population Pyramid 2020

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Lewiston Median Age

40.8


Total

39.2


Male

42.4


Female

Lewiston Adults

There are 25,664 adults, (6,409 of whom are seniors) in Lewiston.

Lewiston Age Dependency

69.3

Age Dependency Ratio

33.3

Old Age Dependency Ratio

36

Child Dependency Ratio

Lewiston Sex Ratio

Female

16,749

51.37%

Male

15,855

48.63%

Lewiston Households and Families

Lewiston Renter vs Owner Occupied by Household Type

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Lewiston Household Types

Type Owner Renter
Married88.6%11.4%
All69.1%30.9%
Non Family53%47%
Female50.4%49.6%
Male49.2%50.8%

69.1%

Rate of Home Ownership

Type Count Average Size Owned
All13,5642.3369.1
Married6,3342.9288.6
Non Family4,9811.2253
Female1,5243.1150.4
Male7253.149.2

2.84

Average Family Size

2.33

Average Household Size

7%

Unmarried (Opposite Sex)

0.4%

Unmarried (Same Sex)

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Lewiston Education

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Education Attained Count Percentage
Less Than 9th Grade4031.78%
9th to 12th Grade1,3806.08%
High School Graduate7,69433.92%
Some College6,01026.50%
Associates Degree2,2299.83%
Bachelors Degree3,76516.60%
Graduate Degree1,2025.30%
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Lewiston Educational Attainment by Race

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Name Total High School Bachelors
White21,26219,6404,722
Hispanic54543175
Native American33033045
Asian23621775
Multiple Races20720244
Other Race86386
Black7249
Islander2929

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

The highest rate of bachelors degrees is among asian people with a rate of 31.78%.

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Name Average Male Female
Overall$36,217$45,278$27,696
Less Than High School$26,953$38,363$13,781
High School Grad$30,081$37,090$21,581
Some College$36,363$49,314$27,818
Bachelors Degree$44,523$51,519$40,443
Graduate Degree$62,667$65,208$49,784

$36,217

Average Earnings

$45,278

Average Male

$27,696

Average Female

Lewiston Language

Lewiston Language by Age

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Lewiston Language

96.16% of Lewiston residents speak only English, while 3.84% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.78% of the population.

Lewiston Poverty

Lewiston Poverty by Race

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Name Total In Poverty Poverty Rate
White28,9003,67412.71%
Multiple74839152.27%
Hispanic1,13828925.40%
Native44013230.00%
Asian26511141.89%
Black913740.66%
Other1173630.77%

14.49%

Overall Poverty Rate

13.46%

Male Poverty Rate

15.47%

Female Poverty Rate

Poverty in Lewiston

The race most likely to be in poverty in Lewiston is Multiple, with 52.27% below the poverty level.

The race least likely to be in poverty in Lewiston is White, with 12.71% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.15%. Among those working part-time, it was 21.66%, and for those that did not work, the poverty rate was 18.69%.

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Name Poverty
Less Than High School28.54%
High School13.13%
Some College10.89%
Bachelors or Greater4.01%
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Name Poverty
Female Unemployed54.41%
Male Unemployed26.32%
Female Employed9.13%
Male Employed7.51%

Lewiston Income

Lewiston Income by Household Type

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Name Median Mean
Households$51,887$64,421
Families$68,171$77,147
Married Families$74,136-
Non Families$31,404$39,464
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Lewiston Marital Status

Lewiston Marital Status

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Marriage Rates

50.5%

Overall Marriage Rate

52.9%

Male Marriage Rate

48.2%

Female Marriage Rate

Lewiston Married by Age and Sex

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Lewiston 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 35-44.

Lewiston Marital Status by Race

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Lewiston Veterans

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2,544

Number of Veterans

2,426

Male Veterans

118

Female Veterans

War Veterans
Vietnam849
First Gulf War623
Second Gulf War283
Korea261
World War II105
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Age Group Veterans
75+657
65 to 74646
35 to 54597
55 to 64452
18 to 34192
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Name Veterans % of Total
White2,3999.78%
Indian8421.43%
Hispanic587.59%
Black3548.61%
2 or More268.75%

Lewiston Veterans by Education

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3.79%

Veteran Poverty Rate

32.22%

Veteran Disability Rate

Lewiston Employment Status

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62.1%

Labor Force Participation

59.4%

Employment Rate

4.4%

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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52.98%

Born in Idaho

98.25%

Native Born

1.75%

Foreign Born

0.61%

Non Citizen

1.14%

Naturalized

Place of Birth

98.25% of Lewiston residents were born in the United States, with 52.98% having been born in Idaho. 0.61% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Year Population Growth Annual Growth Rate
202033,1551690.51%
201932,9861690.51%
201832,81730.01%
201732,8141690.52%
201632,6451690.52%
201532,4761680.52%
201432,308550.17%
201332,2532440.76%
201232,009330.10%
201131,976540.17%
201031,9221,0180.32%
200030,9042,8220.96%
199028,082960.03%
198027,9861,9180.71%
197026,06813,3777.46%
196012,691-294-0.23%
195012,9852,4372.10%
194010,5481,1451.16%
19309,4032,8293.64%
19206,5745310.85%
19106,0435,14320.98%
19009000.00%