ZIP Code 50478 - Thompson Iowa
Overview
ZIP Code 50478 is located in Thompson Iowa. Portions of 50478 are also in King Township and Eden Township (Winnebago County) and Newton Township (Winnebago County) and Linden Township and Forest Township. 50478 is entirely within Winnebago County. Regionally, 50478 is located in the Rochester-Mason City-Austin Area.
ZIP Code 50478 Quick Stats
| ZIP Code Name | Thompson |
| Primary County | Winnebago County |
| ZIP Code Type | Standard |
| Population (2022) | 788 |
| Area Code(s) | 641 |
| Current Time | CDT |
ZIP Code 50478 Map
50478 Demographics
50478 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 50478 is White. The current unemployment level in 50478 is 3.3%.
| Population | 788 |
| Population Growth Rate | -7.2% |
| Population Density | 10 People per Square Mile |
| Total Households | 434 |
| Percentage High Income Households | 2.1% |
| Median Household Income (2021) | $45,000 |
| Average Adjusted Gross Income (2021) | $176,360 |
| Current Unemployment Rate (May 2026) | 3.3% |
| Sales Tax Rate (2025) | 7% |
| Majority Race/Ethnicity | White - 94.14% |
50478 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 707 | 94.14% |
| Black | 0 | 0% |
| Hispanic | 44 | 5.86% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
50478 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 61 | 9.17% |
| Bachelor Degree | 126 | 18.95% |
| High School Diploma | 265 | 39.85% |
| No High School Diploma | 11 | 1.65% |
| GED or Alternate | 28 | 4.21% |
| 1 or More Years of College | 96 | 14.44% |
| Associates Degree | 54 | 8.12% |
| Masters Degree | 24 | 3.61% |
| Professional Degree | 0 | 0% |
| Doctorate Degree | 0 | 0% |
50478 Geography
| Coordinates | 43.40094376, -93.78125763 |
| Adjacent ZIP Codes | |
| Cities/Towns in 50478 | |
| Region | Rochester-Mason City-Austin Area |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 81 Square Miles |
50478 Weather and Climate Data
| Plant Hardiness Zone | Zone 5a: -20F to -15F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 1 - 10 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | May 1 - 10 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dfa - Humid Continental Hot Summers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 47b - Des Moines Lobe | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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