ZIP Code 50645 is located in Ionia Iowa. Portions of 50645 are also in Bassett and North Washington and Chickasaw Township and Richland Township (Chickasaw County) and Deerfield Township and Douglas Township (Bremer County) and Dayton Township (Chickasaw County) and Washington Township (Chickasaw County) and Niles Township. 50645 is primarily within Chickasaw County, with some portions in Bremer County and Floyd County. Regionally, 50645 is located in the Cedar Rapids-Waterloo-Iowa City and Dubuque Area.
| ZIP Code Name | Ionia |
| Primary County | Chickasaw County |
| ZIP Code Type | Standard |
| Population (2022) | 1,391 |
| Area Code(s) | 319 / 641 |
| Current Time | CDT |
50645 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 50645 is White. The current unemployment level in 50645 is 3.3%.
| Population | 1,391 |
| Population Growth Rate | 0.00% |
| Population Density | 17 People per Square Mile |
| Total Households | 416 |
| Percentage High Income Households | 5.3% |
| Median Household Income (2021) | $52,083 |
| Average Adjusted Gross Income (2021) | $368,370 |
| Current Unemployment Rate (May 2026) | 3.3% |
| Sales Tax Rate (2025) | 7.0% |
| Majority Race/Ethnicty | White - 98.80% |
| Race/Ethnicty | Total | Percentage |
|---|---|---|
| White | 1,237 | 98.8% |
| Black | 14 | 1.12% |
| Hispanic | 0 | 0% |
| Asian | 1 | 0.08% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
| Highest Education Level Attained | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 20 | 3.32% |
| Bachelor Degree | 29 | 4.82% |
| High School Diploma | 342 | 56.81% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 37 | 6.15% |
| 1 or More Years of College | 82 | 13.62% |
| Associates Degree | 61 | 10.13% |
| Masters Degree | 20 | 3.32% |
| Professional Degree | 11 | 1.83% |
| Doctorate Degree | 0 | 0% |
| Coordinates | 43.01770782,-92.44466400 |
| Adjacent ZIP Codes | |
| Cities/Towns in 50645 | |
| Regions | Cedar Rapids-Waterloo-Iowa City and Dubuque AreaRochester-Mason City-Austin Area |
| Metropolitan/Micropolitan Stat Area | Waterloo-Cedar Falls, IA |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 82 Square Miles |
| 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 | 47c - Iowan Surface | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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