St. John is a town located in Whitman County, Washington. St. John has a 2025 population of 588 . St. John is currently declining at a rate of -0.34% annually and its population has decreased by -1.51% since the most recent census, which recorded a population of 597 in 2020.
The average household income in St. John is $67,693 with a poverty rate of 14.31%. The median age in St. John is 55.1 years: 49 years for males, and 55.3 years for females. For every 100 females there are 80.7 males.
Data after 2023 is projected based on recent change
The racial composition of St. John includes 87.74% White, 7.45% Black or African American, and smaller percentages for Native American, Asian and multiracial populations.
White (87.74%)
Black or African American (7.45%)
Two or more races (3.94%)
Native American (0.44%)
Asian (0.44%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 601 | 87.74% |
| Black or African American | 51 | 7.45% |
| Two or more races | 27 | 3.94% |
| Native American | 3 | 0.44% |
| Asian | 3 | 0.44% |
Married
Widowed
Divorced
Separated
Never Married
St. John's average per capita income is $39,375. Household income levels show a median of $61,000. The poverty rate stands at 14.31%.
Name | Median | Mean |
|---|---|---|
| Married Families | $93,125 | - |
| Families | $85,938 | $93,173 |
| Households | $61,000 | $67,693 |
| Non Families | $24,792 | $34,810 |
Average Income
Median Household Income
Poverty Rate