ZIP Code 51040 - Onawa Iowa

ZIP Code 51040 is located in Onawa Iowa. Portions of 51040 are also in Turin and Ashton Township and Belvidere Township and Lincoln Township (Monona County) and Franklin Township (Monona County) and Sioux Township (Monona County). 51040 is entirely within Monona County. Regionally, it is located in the Sioux City Area.

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ZIP Code 51040 Quick Stats

ZIP Code NameOnawa
Primary CountyMonona County
ZIP Code TypeStandard
Population (2022)3,422
Area Code(s)712
Current Time
CDT

ZIP Code 51040 Map

51040 Demographics

51040 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 51040 is White. The majority race/ethnicity attending public schools in 51040 is White. The current unemployment level in 51040 is 3.2%.

Population3,422
Population Growth Rate0.00%
Population Density19 People per Square Mile
Total Households1,640
Percentage High Income Households0.6%
Median Houshold Income (2021)$51,036
Average Adjusted Gross Income (2020)$57,290
Current Unemployment Rate (February 2024)3.2%
Majority Race/EthnictyWhite - 96.50%
Public School Majority Race/EthnictyWhite - 83.54%

51040 Race/Ethnicty Breakdown

Race/EthnictyTotalPercentage
White3,30795.58%
Black20.06%
Hispanic802.31%
Asian00%
Native American381.1%
Hawaiian/Pac. Islander330.95%

51040 Public School Race/Ethnicty Breakdown

Race/EthnictyTotalPercentage
White53389.13%
Black91.51%
Hispanic172.84%
Asian40.67%
Native American355.85%
Hawaiian/Pac. Islander00%

51040 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College27110.46%
Bachelor Degree34913.47%
High School Diploma98137.88%
No High School Diploma461.78%
GED or Alternate1435.52%
1 or More Years of College43016.6%
Associates Degree31112.01%
Masters Degree451.74%
Professional Degree140.54%
Doctorate Degree00%

51040 Geography

Coordinates42.01718521,-96.06951141
Adjacent ZIP Codes
Cities/Towns in 51040
RegionSioux City Area
Time ZoneCentral Daylight Time
IANA TimezoneAmerica/Chicago
Area181 Square Miles

51040 Politics

US Congressional Districts in 51040
Iowa State Senate Districts in 51040
Iowa State House of Representatives Districts in 51040

51040 Weather and Climate Data

Plant Hardiness ZoneZone 5a: -20F to -15F
Average First Frost DateOctober 1 - 10
Average Last Frost DateApril 21 - 31
Koppen-Geiger Climate ZoneDfa - Humid Continental Hot Summers
Ecoregion47d - Missouri Alluvial Plain

51040 Annual Climate Data

JanFebMarAprMayJunJulAugSepOctNovDecAnnual
Avg Min Temp (°F)10162738505964625240261438
Avg Max Temp (°F)30374963748387847765463361
Avg Precip (In.).65.692.153.114.154.343.953.372.922.331.59.8430.1

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