Lewis County's estimated 2026 population is 88,619 with a growth rate of 0.89% in the past year according to the most recent United States census data. Lewis County is the 15th largest county in Washington. The 2010 population was 75,503 and has seen a growth of 17.37% since that time.
Data after 2023 is projected based on recent change
The racial composition of Lewis County includes 83.59% White, and smaller percentages for other race, Asian, Native American, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
White (83.59%)
Two or more races (10.27%)
Other race (2.89%)
Asian (1.18%)
Native American (1.07%)
Black or African American (0.77%)
Native Hawaiian or Pacific Islander (0.23%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 70,150 | 83.59% |
| Two or more races | 8,621 | 10.27% |
| Other race | 2,427 | 2.89% |
| Asian | 993 | 1.18% |
| Native American | 897 | 1.07% |
| Black or African American | 648 | 0.77% |
| Native Hawaiian or Pacific Islander | 189 | 0.23% |
Married
Widowed
Divorced
Separated
Never Married
Lewis County's average per capita income is $46,699. Household income levels show a median of $69,690. The poverty rate stands at 12.99%.
Name | Median | Mean |
|---|---|---|
| Married Families | $95,356 | $111,625 |
| Families | $84,960 | $100,616 |
| Households | $69,690 | $86,552 |
| Non Families | $35,167 | $51,519 |
Average Income
Median Household Income
Poverty Rate