66604 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in Kansas based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 66604 is White. The majority race/ethnicity attending public schools in 66604 is White. The current unemployment level in 66604 is 4.4%.
| Population | 22,933 |
| Population Growth Rate | 3.90% |
| Population Density | 3,790 People per Square Mile |
| Total Households | 10,206 |
| Percentage High Income Households | 1.2% |
| Median Household Income (2021) | $54,102 |
| Average Adjusted Gross Income (2021) | $580,180 |
| Current Unemployment Rate (September 2025) | 4.4% |
| Sales Tax Rate (2025) | 10.3% |
| Majority Race/Ethnicty | White - 77.96% |
| Public School Majority Race/Ethnicty | White - 45.47% |
66604 Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
|---|
| White | 18,709 | 77.96% |
| Black | 1,630 | 6.79% |
| Hispanic | 2,893 | 12.05% |
| Asian | 541 | 2.25% |
| Native American | 226 | 0.94% |
| Hawaiian/Pac. Islander | 0 | 0% |
66604 Public School Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
|---|
| White | 1,304 | 52.45% |
| Black | 433 | 17.42% |
| Hispanic | 709 | 28.52% |
| Asian | 14 | 0.56% |
| Native American | 14 | 0.56% |
| Hawaiian/Pac. Islander | 12 | 0.48% |
66604 Educational Attainment Levels
| Highest Education Level Attained | Total | Percentage |
|---|
| Less Than 1 Year of College | 1,057 | 7.8% |
| Bachelor Degree | 3,047 | 22.48% |
| High School Diploma | 3,339 | 24.63% |
| No High School Diploma | 165 | 1.22% |
| GED or Alternate | 894 | 6.6% |
| 1 or More Years of College | 2,575 | 19% |
| Associates Degree | 817 | 6.03% |
| Masters Degree | 1,064 | 7.85% |
| Professional Degree | 434 | 3.2% |
| Doctorate Degree | 162 | 1.2% |