ZIP Code 51033 - Linn Grove Iowa
Overview
ZIP Code 51033 is located in Linn Grove Iowa. Portions of 51033 are also in Barnes Township and Brooke Township and Douglas Township (Clay County) and Peterson Township and Lincoln Township (Clay County). 51033 is primarily within Buena Vista County, with some portions in Clay County. Regionally, 51033 is located in the Sioux City Area.
ZIP Code 51033 Quick Stats
| ZIP Code Name | Linn Grove |
| Primary County | Buena Vista County |
| ZIP Code Type | Standard |
| Population (2022) | 460 |
| Area Code(s) | 712 |
| Current Time | CDT |
ZIP Code 51033 Map
51033 Demographics
51033 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 51033 is White. The current unemployment level in 51033 is 3.3%.
| Population | 460 |
| Population Growth Rate | 0% |
| Population Density | 7 People per Square Mile |
| Total Households | 215 |
| Percentage High Income Households | 7.9% |
| Median Household Income (2021) | $45,583 |
| Average Adjusted Gross Income (2021) | $200,950 |
| Current Unemployment Rate (May 2026) | 3.3% |
| Sales Tax Rate (2025) | 7% |
| Majority Race/Ethnicity | White - 85.29% |
51033 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 377 | 85.29% |
| Black | 0 | 0% |
| Hispanic | 58 | 13.12% |
| Asian | 0 | 0% |
| Native American | 7 | 1.58% |
| Hawaiian/Pac. Islander | 0 | 0% |
51033 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 31 | 10.88% |
| Bachelor Degree | 54 | 18.95% |
| High School Diploma | 99 | 34.74% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 2 | 0.7% |
| 1 or More Years of College | 63 | 22.11% |
| Associates Degree | 22 | 7.72% |
| Masters Degree | 12 | 4.21% |
| Professional Degree | 2 | 0.7% |
| Doctorate Degree | 0 | 0% |
51033 Geography
| Coordinates | 42.89230728, -95.25237274 |
| Adjacent ZIP Codes | |
| Cities/Towns in 51033 | |
| Region | Sioux City Area |
| Metropolitan/Micropolitan Stat Areas | Storm Lake, IA Spencer, IA |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 63 Square Miles |
51033 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 | 47a - Loess Prairies | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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