ZIP Code 51022 - Granville Iowa
Overview
ZIP Code 51022 is located in Granville Iowa. Portions of 51022 are also in East Orange Township and Baker Township (Obrien County) and Caledonia Township and Floyd Township (Sioux County) and Dale Township (Obrien County). 51022 is primarily within Obrien County, with some portions in Sioux County. Regionally, 51022 is located in the Sioux City Area.
ZIP Code 51022 Quick Stats
| ZIP Code Name | Granville |
| Primary County | Obrien County |
| ZIP Code Type | Standard |
| Population (2022) | 993 |
| Area Code(s) | 712 |
| Current Time | CDT |
ZIP Code 51022 Map
51022 Demographics
51022 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 51022 is White. The current unemployment level in 51022 is 3.3%.
| Population | 993 |
| Population Growth Rate | 3.54% |
| Population Density | 14 People per Square Mile |
| Total Households | 345 |
| Median Household Income (2021) | $80,575 |
| Average Adjusted Gross Income (2021) | $385,200 |
| Current Unemployment Rate (May 2026) | 3.3% |
| Sales Tax Rate (2025) | 7% |
| Majority Race/Ethnicity | White - 95.18% |
51022 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 809 | 95.18% |
| Black | 0 | 0% |
| Hispanic | 40 | 4.71% |
| Asian | 0 | 0% |
| Native American | 1 | 0.12% |
| Hawaiian/Pac. Islander | 0 | 0% |
51022 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 45 | 8.2% |
| Bachelor Degree | 70 | 12.75% |
| High School Diploma | 208 | 37.89% |
| No High School Diploma | 3 | 0.55% |
| GED or Alternate | 28 | 5.1% |
| 1 or More Years of College | 92 | 16.76% |
| Associates Degree | 96 | 17.49% |
| Masters Degree | 7 | 1.28% |
| Professional Degree | 0 | 0% |
| Doctorate Degree | 0 | 0% |
51022 Geography
| Coordinates | 42.98089218, -95.85197449 |
| Adjacent ZIP Codes | |
| Cities/Towns in 51022 | |
| Region | Sioux City Area |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 71 Square Miles |
51022 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 | 47a - Loess Prairies | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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