51640 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in Iowa based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 51640 is White. The majority race/ethnicity attending public schools in 51640 is White. The current unemployment level in 51640 is 3.3%.
| Population | 1,503 |
| Population Growth Rate | 0% |
| Population Density | 16 People per Square Mile |
| Total Households | 721 |
| Percentage High Income Households | 1.5% |
| Median Household Income (2021) | $53,571 |
| Average Adjusted Gross Income (2021) | $498,730 |
| Current Unemployment Rate (May 2026) | 3.3% |
| Sales Tax Rate (2025) | 5.5% |
| Majority Race/Ethnicity | White - 97.61% |
| Public School Majority Race/Ethnicity | White - 90.37% |
51640 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|
| White | 1,510 | 97.61% |
| Black | 0 | 0% |
| Hispanic | 37 | 2.39% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
51640 Public School Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|
| White | 122 | 92.42% |
| Black | 0 | 0% |
| Hispanic | 9 | 6.82% |
| Asian | 0 | 0% |
| Native American | 1 | 0.76% |
| Hawaiian/Pac. Islander | 0 | 0% |
51640 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|
| Less Than 1 Year of College | 67 | 6.34% |
| Bachelor Degree | 153 | 14.47% |
| High School Diploma | 442 | 41.82% |
| No High School Diploma | 3 | 0.28% |
| GED or Alternate | 35 | 3.31% |
| 1 or More Years of College | 195 | 18.45% |
| Associates Degree | 108 | 10.22% |
| Masters Degree | 22 | 2.08% |
| Professional Degree | 20 | 1.89% |
| Doctorate Degree | 12 | 1.14% |
