St. John is a city located in Stafford County, Kansas. St. John has a 2026 population of 1,147. It is also the county seat of Stafford County. St. John is currently declining at a rate of -1.12% annually and its population has decreased by -6.29% since the most recent census, which recorded a population of 1,224 in 2020.
The median household income in St. John is $73,929 with a poverty rate of 12.05%. The median age in St. John is 38.7 years: 33 years for males, and 44.4 years for females. For every 100 females there are 98.0 males.
Data after 2023 is projected based on recent change
Overall: 38.7 years
Female: 44.4 years
Male: 33 years
There are 884 adults, (248 of whom are seniors) in St. John.
Female: 592 (50.5%)
Male: 580 (49.5%)
The racial composition of St. John includes 85.49% White, 4.35% other race, and smaller percentages for Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 1,002 | 85.49% |
| Two or more races | 102 | 8.7% |
| Other race | 51 | 4.35% |
| Native American | 17 | 1.45% |
St. John 's average per capita income is $45,978. Household income levels show a median of $73,929. The poverty rate stands at 12.05%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $106,250 | - |
| Families | $94,766 | $97,722 |
| Households | $73,929 | $80,706 |
| Non Families | $34,464 | $38,161 |
Average Income
Median Household Income
Poverty Rate