Census 2010: Washington › Lewis County

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(Mapping 100 largest census tracts, by 2010 population.)

Lewis County

Square miles: 2,436.3 Population per sq. mile: 31.4

  • 2010 population: 75,455
  • 2000 population: 68,600
  • Total change: 6,855 (10.0%)

See all Washington counties

2010 population by race/ethnicity

Diversity Index: 26.3%
The USA TODAY Diversity Index represents the probability that two people from this area will have different ethnic backgrounds. A higher number reflects a more ethnically diverse population.

Age breakdown Median: 41.5 years old

Lewis County population

Race/ethnicity2010 population2010 percentage2000 population2000 percentage2000-2010 change
American Indian/Alaska Native1,0731.4%8401.2%27.7%
Native Hawaiian/Pacific Islander1170.2%1220.2%-4.1%
Other race3,0474.0%1,7512.6%74.0%
Two or more races2,4373.2%1,3812.0%76.5%
*Hispanic origin6,5278.7%3,6845.4%77.2%

*Residents of Hispanic origin can be of any race.

Ages 0-17

Population: 17,460 (23.1%)

Diversity Index: 49.9%

Ages 18+

Population: 57,995 (76.9%)

Diversity Index: 25.5%

Race/ethnicityAges 0-17% of 0-17 totalAges 18+% of 18+ total
American Indian/Alaska Native2651.5%8081.4%
Native Hawaiian/Pacific Islander320.2%850.1%
Other race1,1876.8%1,8603.2%
Two or more races1,1816.8%1,2562.2%
*Hispanic origin2,93116.8%3,5966.2%

*Residents of Hispanic origin can be of any race.

Population37,750 (50.0%)
Median age40.4
Population37,705 (50.0%)
Median age42.7
Age breakdown by gender
AgePopulation% of totalMale% of male totalFemale% of female total
Under 109,12412.1%4,71012.5%4,41411.7%
10 to 19 years10,40513.8%5,47514.5%4,93013.1%
20 to 29 years8,51111.3%4,37311.6%4,13811.0%
30 to 39 years8,32111.0%4,15011.0%4,17111.1%
40 to 49 years9,76512.9%4,86812.9%4,89713.0%
50 to 59 years11,13714.8%5,50914.6%5,62814.9%
60 to 69 years9,28512.3%4,62712.3%4,65812.4%
70 to 79 years5,4127.2%2,6277.0%2,7857.4%
80 and older3,4954.6%1,4113.7%2,0845.5%

*Residents of Hispanic origin can be of any race.

Household types
Families 2010
Avg. size 3.0
Households 20,104 (67.6%)
Non-families 2010
Avg. size 2.5
Households 9,639 (32.4%)
Family composition
Households ‡ 2010 % of households % of families
Husband-wife family, without children 10,113 34.0% ...
Husband-wife family, with children under 18 years 5,128 17.2% ...
Single male, no children (with other family) 737 2.5% ...
Single male, with children under 18 years 892 3.0% ...
Single female, no children (with other family) 1,383 4.6% ...
Single female, with children under 18 years 1,851 6.2% ...
Single male living alone 3,616 12.2% n/a
Single female living alone 4,028 13.5% n/a
Other non-family households (ex.: roommates) 1,995 6.7% n/a
Total 29,743 100% n/a
Family households 20,104 67.6% 100%
Families with children under 18 years 7,871 26.5% ...
Non-family households 9,639 32.4% n/a
All households with individuals 65 years and over 9,313 31.3% n/a

‡ United States Census Bureau definitions:

Household — A household includes all of the people who occupy a housing unit. People not living in households are classified as living in group quarters. (Ex: college residence halls, skilled-nursing facilities, military barracks, …)
Family — A family includes a householder and one or more people living in the same household who are related to the householder by birth, marriage, or adoption.
Non-family Household — A householder living alone or with nonrelatives only.

Note: Family households and husband-wife-couple families do not include same-sex married couples even if the marriage was performed in a state issuing marriage certificates for same-sex couples. Same-sex-couple households are included in the family households category if there is at least one additional person related to the householder by birth or adoption. Same-sex-couple households with no relatives of the householder present are tabulated in nonfamily households.

Housing Units
Avg. household size2.5
Avg. household size2.5
Vacancy Rate2010
Owner-occupied properties2.7%
Renter-occupied properties7.4%
Overall vacancy rate12.6%
Housing Units2010% of total
Vacant4,307 12.6%
For rent7152.1%
Rented, but unoccupied450.1%
For sale5891.7%
Sold, but unoccupied1000.3%
Seasonal use only1,9185.6%
Other vacant units9402.8%

Credits: Ryan Pitts, Mike Tigas Special thanks: USA Today Census team