ZIP Code 52040 has segments in 2 Counties (Delaware, Dubuque).
The ZIP Code maps and database are updated 4 times per year.
Database updated: October 1, 2025, Maps updated: May 1, 2024.
POPULATION | |
|---|---|
| Total Population | 6,168 (100%) |
| Population in Households | 6,084 (98.6%) |
| Population in Families | 4,980 (80.7%) |
| Population in Group Quarters1 | 84 ( 1.4%) |
| Population Density | 94 |
| Diversity Index2 | 19 |
INCOME | |
| Median Household Income | $75,882 |
| Average Household Income | $94,791 |
| % of Income for Mortgage4 | 23% |
| Per Capita Income | $38,577 |
| Wealth Index5 | 81 |
| Socioeconomic Status Index6 | Moderate (62.8) |
HOUSING | |
|---|---|
| Total HU (Housing Units) | 2,672 (100%) |
| Owner Occupied HU | 2,064 (77.2%) |
| Renter Occupied HU | 443 (16.6%) |
| Vacant Housing Units | 165 ( 6.2%) |
| Median Home Value | $283,427 |
| Average Home Value | $306,472 |
| Housing Affordability Index3 | 95 |
HOUSEHOLDS | |
| Total Households | 2,507 |
| Average Household Size | 2.43 |
| Family Households | 1,653 |
| Average Family Size | 3.00 |
GROWTH RATE / YEAR |
2020-2025 | 2025-2030 |
|---|---|---|
| Population | 0.92% | 0.53% |
| Households | 1.10% | 0.63% |
| Families | 0.62% | |
| Median Household Income | 1.86% | |
| Per Capita Income | 2.21% | |
| Owner Occupied HU | 0.90% |
The table below compares 52040 to the other 964 ZIP Codes in Iowa by rank and percentile using July 1, 2025 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.
| Variable Description | Rank | Percentile |
|---|---|---|
| Total Population | # 125 | 87th |
| Population Density | # 210 | 78th |
| Median Household Income | # 490 | 49th |
| Housing Affordability Index | # 178 | 18th |
| Per Capita Income | # 532 | 45th |
| Diversity Index | # 365 | 63rd |
Additional comparisons and rankings can be made with a VERY EASY TO USE Iowa Census Data Comparison Tool.