ZIP Code 51565 - Portsmouth Iowa
Overview
ZIP Code 51565 is located in Portsmouth Iowa. Portions of 51565 are also in Cass Township (Shelby County) and Cass Township (Harrison County) and Lincoln Township (Shelby County). 51565 is primarily within Shelby County, with some portions in Harrison County. Regionally, 51565 is located in the Omaha Area.
ZIP Code 51565 Quick Stats
| ZIP Code Name | Portsmouth |
| Primary County | Shelby County |
| ZIP Code Type | Standard |
| Population (2022) | 530 |
| Area Code(s) | 712 |
| Current Time | CDT |
ZIP Code 51565 Map
51565 Demographics
51565 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 51565 is White. The current unemployment level in 51565 is 3.3%.
| Population | 530 |
| Population Growth Rate | -0.38% |
| Population Density | 10 People per Square Mile |
| Total Households | 233 |
| Percentage High Income Households | 0.4% |
| Median Household Income (2021) | $88,212 |
| Average Adjusted Gross Income (2021) | $175,070 |
| Current Unemployment Rate (May 2026) | 3.3% |
| Sales Tax Rate (2025) | 7% |
| Majority Race/Ethnicity | White - 96.93% |
51565 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 505 | 96.93% |
| Black | 0 | 0% |
| Hispanic | 16 | 3.07% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
51565 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 24 | 6.42% |
| Bachelor Degree | 15 | 4.01% |
| High School Diploma | 186 | 49.73% |
| No High School Diploma | 3 | 0.8% |
| GED or Alternate | 4 | 1.07% |
| 1 or More Years of College | 66 | 17.65% |
| Associates Degree | 69 | 18.45% |
| Masters Degree | 7 | 1.87% |
| Professional Degree | 0 | 0% |
| Doctorate Degree | 0 | 0% |
51565 Geography
| Coordinates | 41.64572144, -95.52601624 |
| Adjacent ZIP Codes | |
| Cities/Towns in 51565 | |
| Region | Omaha Area |
| Metropolitan/Micropolitan Stat Area | Omaha-Council Bluffs, NE-IA |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 53 Square Miles |
51565 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 | 47e - Steeply Rolling Loess Prairies | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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