ZIP Code 52140 - Dorchester Iowa
Overview
ZIP Code 52140 is located in Dorchester Iowa. Portions of 52140 are also in Waterloo Township and Hanover Township (Allamakee County) and Union City Township and French Creek Township and Highland Township (Winneshiek County). 52140 is primarily within Allamakee County, with some portions in Winneshiek County. Regionally, 52140 is located in the Cedar Rapids-Waterloo-Iowa City and Dubuque Area.
ZIP Code 52140 Quick Stats
| ZIP Code Name | Dorchester |
| Primary County | Allamakee County |
| ZIP Code Type | Standard |
| Population (2022) | 453 |
| Area Code(s) | 563 |
| Current Time | CDT |
ZIP Code 52140 Map
52140 Demographics
The majority race/ethnicity residing in 52140 is White. The current unemployment level in 52140 is 3.3%.
| Population | 453 |
| Population Growth Rate | 0% |
| Population Density | 6 People per Square Mile |
| Total Households | 277 |
| Percentage High Income Households | 1.4% |
| Average Adjusted Gross Income (2021) | $140,660 |
| Current Unemployment Rate (May 2026) | 3.3% |
| Sales Tax Rate (2025) | 7% |
| Majority Race/Ethnicity | White - 100% |
52140 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 436 | 100% |
| Black | 0 | 0% |
| Hispanic | 0 | 0% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
52140 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 25 | 6.94% |
| Bachelor Degree | 52 | 14.44% |
| High School Diploma | 175 | 48.61% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 11 | 3.06% |
| 1 or More Years of College | 61 | 16.94% |
| Associates Degree | 26 | 7.22% |
| Masters Degree | 10 | 2.78% |
| Professional Degree | 0 | 0% |
| Doctorate Degree | 0 | 0% |
52140 Geography
| Coordinates | 43.44166565, -91.52584076 |
| Adjacent ZIP Codes | |
| Cities/Towns in 52140 | |
| Region | Cedar Rapids-Waterloo-Iowa City and Dubuque Area |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 77 Square Miles |
52140 Weather and Climate Data
| Plant Hardiness Zone | Zone 4b: -25F to -20F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 1 - 10 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | May 1 - 10 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dfa - Humid Continental Hot Summers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 52b - Paleozoic Plateau/Coulee Section | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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