Lewis County's estimated 2026 population is 88,993 with a growth rate of 1.06% 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 17.87% since that time.
Data after 2023 is projected based on recent change
Overall: 42.2 years
Female: 43 years
Male: 40.9 years
There are 66,731 adults, (18,211 of whom are seniors) in Lewis County.
Female: 42,315 (49.7%)
Male: 42,839 (50.3%)
The racial composition of Lewis County includes 82.22% White, 3.24% other race, and smaller percentages for Native American, Asian, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 70,016 | 82.22% |
| Two or more races | 9,250 | 10.86% |
| Other race | 2,762 | 3.24% |
| Native American | 1,203 | 1.41% |
| Asian | 1,011 | 1.19% |
| Black or African American | 713 | 0.84% |
| Native Hawaiian or Pacific Islander | 199 | 0.23% |
Lewis County's average per capita income is $49,424. Household income levels show a median of $74,796. The poverty rate stands at 12.22%.
Name | Median | Mean |
|---|---|---|
| Married Families | $101,832 | $118,480 |
| Families | $90,311 | $107,567 |
| Households | $74,796 | $92,194 |
| Non Families | $36,151 | $52,588 |
Average Income
Median Household Income
Poverty Rate