ZIP Code 52638 - Middletown Iowa
Overview
ZIP Code 52638 is located in Middletown Iowa. Portions of 52638 are also in Danville Township (Des Moines County) and Flint River Township. 52638 is entirely within Des Moines County. Regionally, 52638 is located in the Davenport-Rock Island-Moline Area.
ZIP Code 52638 Quick Stats
| ZIP Code Name | Middletown |
| Primary County | Des Moines County |
| ZIP Code Type | Standard |
| Population (2022) | 516 |
| Area Code(s) | 319 |
| Current Time | CDT |
ZIP Code 52638 Map
52638 Demographics
52638 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 52638 is White. The current unemployment level in 52638 is 3.3%.
| Population | 516 |
| Population Growth Rate | -9.12% |
| Population Density | 116 People per Square Mile |
| Total Households | 158 |
| Median Household Income (2021) | $64,318 |
| Average Adjusted Gross Income (2021) | $153,340 |
| Current Unemployment Rate (May 2026) | 3.3% |
| Sales Tax Rate (2025) | 7% |
| Majority Race/Ethnicity | White - 94.13% |
52638 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 513 | 94.13% |
| Black | 0 | 0% |
| Hispanic | 30 | 5.5% |
| Asian | 2 | 0.37% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
52638 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 16 | 4.86% |
| Bachelor Degree | 40 | 12.16% |
| High School Diploma | 154 | 46.81% |
| No High School Diploma | 6 | 1.82% |
| GED or Alternate | 7 | 2.13% |
| 1 or More Years of College | 42 | 12.77% |
| Associates Degree | 45 | 13.68% |
| Masters Degree | 13 | 3.95% |
| Professional Degree | 6 | 1.82% |
| Doctorate Degree | 0 | 0% |
52638 Geography
| Coordinates | 40.84552002, -91.2591629 |
| Adjacent ZIP Codes | |
| Cities/Towns in 52638 | |
| Region | Davenport-Rock Island-Moline Area |
| Metropolitan/Micropolitan Stat Area | Burlington, IA-IL |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 4 Square Miles |
52638 Weather and Climate Data
| Plant Hardiness Zone | Zone 5b: -15F to -10F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | April 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dfa - Humid Continental Hot Summers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 47f - Rolling Loess Prairies | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||