ZIP Code 52309 - Monmouth Iowa
Overview
ZIP Code 52309 is located in Monmouth Iowa. Portions of 52309 are also in Brandon Township and Monmouth Township and Clay Township (Jones County) and Wyoming Township. 52309 is primarily within Jackson County, with some portions in Jones County. Regionally, 52309 is located in the Davenport-Rock Island-Moline Area.
ZIP Code 52309 Quick Stats
| ZIP Code Name | Monmouth |
| Primary County | Jackson County |
| ZIP Code Type | Standard |
| Population (2022) | 556 |
| Area Code(s) | 563 |
| Current Time | CDT |
ZIP Code 52309 Map
52309 Demographics
52309 can be classified socioeconomically as 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 52309 is White. The current unemployment level in 52309 is 3.3%.
| Population | 556 |
| Population Growth Rate | 0% |
| Population Density | 17 People per Square Mile |
| Total Households | 201 |
| Median Household Income (2021) | $75,938 |
| Average Adjusted Gross Income (2021) | $124,030 |
| Current Unemployment Rate (May 2026) | 3.3% |
| Sales Tax Rate (2025) | 7% |
| Majority Race/Ethnicity | White - 97.6% |
52309 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 529 | 97.6% |
| Black | 0 | 0% |
| Hispanic | 0 | 0% |
| Asian | 13 | 2.4% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
52309 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 44 | 14.81% |
| Bachelor Degree | 28 | 9.43% |
| High School Diploma | 142 | 47.81% |
| No High School Diploma | 1 | 0.34% |
| GED or Alternate | 37 | 12.46% |
| 1 or More Years of College | 33 | 11.11% |
| Associates Degree | 0 | 0% |
| Masters Degree | 11 | 3.7% |
| Professional Degree | 1 | 0.34% |
| Doctorate Degree | 0 | 0% |
52309 Geography
| Coordinates | 42.12224579, -90.88119507 |
| Adjacent ZIP Codes | |
| Cities/Towns in 52309 | |
| Regions | Davenport-Rock Island-Moline Area Cedar Rapids-Waterloo-Iowa City and Dubuque Area |
| Metropolitan/Micropolitan Stat Area | Cedar Rapids, IA |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 32 Square Miles |
52309 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 | 47f - Rolling Loess Prairies | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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