ZIP Code 50565 - Marathon Iowa
Overview
ZIP Code 50565 is located in Marathon Iowa. Portions of 50565 are also in Poland Township and Lee Township (Buena Vista County) and Lincoln Township (Buena Vista County). 50565 is entirely within Buena Vista County. Regionally, 50565 is located in the Sioux City Area.
ZIP Code 50565 Quick Stats
| ZIP Code Name | Marathon |
| Primary County | Buena Vista County |
| ZIP Code Type | Standard |
| Population (2022) | 381 |
| Area Code(s) | 712 |
| Current Time | CDT |
ZIP Code 50565 Map
50565 Demographics
50565 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 50565 is White. The current unemployment level in 50565 is 3.3%.
| Population | 381 |
| Population Growth Rate | -16.51% |
| Population Density | 9 People per Square Mile |
| Total Households | 250 |
| Median Household Income (2021) | $60,313 |
| Average Adjusted Gross Income (2021) | $148,370 |
| Current Unemployment Rate (May 2026) | 3.3% |
| Sales Tax Rate (2025) | 7% |
| Majority Race/Ethnicity | White - 96.63% |
50565 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 344 | 96.63% |
| Black | 0 | 0% |
| Hispanic | 12 | 3.37% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
50565 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 30 | 8.04% |
| Bachelor Degree | 59 | 15.82% |
| High School Diploma | 132 | 35.39% |
| No High School Diploma | 5 | 1.34% |
| GED or Alternate | 16 | 4.29% |
| 1 or More Years of College | 64 | 17.16% |
| Associates Degree | 64 | 17.16% |
| Masters Degree | 3 | 0.8% |
| Professional Degree | 0 | 0% |
| Doctorate Degree | 0 | 0% |
50565 Geography
| Coordinates | 42.86150742, -94.99960327 |
| Adjacent ZIP Codes | |
| Cities/Towns in 50565 | |
| Region | Sioux City Area |
| Metropolitan/Micropolitan Stat Area | Storm Lake, IA |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 45 Square Miles |
50565 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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