ZIP Code 51109 - Sioux City Iowa

ZIP Code 51109 is located in Sioux City Iowa. Portions of 51109 are also in Hancock Township and Perry Township (Plymouth County) and Jefferson Township (Union County). 51109 is primarily within Plymouth County, with some portions in Woodbury County and Union County. Regionally, 51109 is located in the Sioux City Area.

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ZIP Code 51109 Quick Stats

ZIP Code NameSioux City
Primary CountyPlymouth County
ZIP Code TypeStandard
Population (2022)3,619
Area Code(s)712
Current Time

ZIP Code 51109 Map

51109 Demographics

51109 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 51109 is White. The majority race/ethnicity attending public schools in 51109 is White. The current unemployment level in 51109 is 2.2%.

Population Growth Rate14.07%
Population Density192 People per Square Mile
Total Households1,270
Percentage High Income Households1.5%
Median Household Income (2021)$61,786
Average Adjusted Gross Income (2021)$155,740
Current Unemployment Rate (June 2024)2.2%
Majority Race/EthnictyWhite - 84.16%
Public School Majority Race/EthnictyWhite - 60.54%

51109 Race/Ethnicty Breakdown

Native American140.39%
Hawaiian/Pac. Islander00%

51109 Public School Race/Ethnicty Breakdown

Native American83.32%
Hawaiian/Pac. Islander00%

51109 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College1809.97%
Bachelor Degree1357.48%
High School Diploma85747.48%
No High School Diploma472.6%
GED or Alternate1719.47%
1 or More Years of College22312.35%
Associates Degree1226.76%
Masters Degree321.77%
Professional Degree382.11%
Doctorate Degree00%

51109 Geography

Adjacent ZIP Codes
Cities/Towns in 51109
RegionSioux City Area
Metropolitan/Micropolitan Stat AreaSioux City, IA-NE-SD
Time ZoneCentral Daylight Time
IANA TimezoneAmerica/Chicago
Area19 Square Miles

51109 Politics

US Congressional Districts in 51109
Iowa State Senate Districts in 51109
Iowa State House of Representatives Districts in 51109

51109 Weather and Climate Data

Plant Hardiness ZoneZone 5a: -20F to -15F
Average First Frost DateOctober 1 - 10
Average Last Frost DateMay 1 - 10
Koppen-Geiger Climate ZoneDfa - Humid Continental Hot Summers
Ecoregion47d - Missouri Alluvial Plain

51109 Annual Climate Data

Avg Min Temp (°F)9152637505964615139251337
Avg Max Temp (°F)29354762738286847664453260
Avg Precip (In.).62.662.122.9343.853.5132.562.111.55.827.7

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