ZIP Code 51044 in Oto, IA

Data Last Updated: October 1, 2025
City:Oto, Iowa
County:Woodbury County
Timezone:Central (GMT -06:00)
Local Time:7:18:48 PM
Population:209 [See All]
Area Code:712
Classification:Standard [Normal Street Delivery]
Coordinates:42.2876, -95.9032
Land Area:33.676 sq mi
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Population & Demographics


ZIP Code 51044 has 209 residents and 94 households (average 2.22 persons per household). The median age is 45.8 years, significantly older than the state (38.6) and significantly older than the nation (38.8). The gender split is 50.7% male and 49.3% female, which is slightly higher than the national male share (49.1%), making this a male-majority area. Largest groups are White (93.3%, much higher than the state average of 84.5% and well above the national average of 61.6%) and Hispanic or Latino (3.8%); Hispanic or Latino residents make up 3.8%, which is much lower than the national average (18.7%).

Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship

Source: U.S. Census 2020 Demographics & Housing Characteristics (DHC) and U.S. Census 2011-2023 American Community Survey (ACS) 5-Year Estimates.
2020 Population:209Source: Census DHC
2023 ACS Population Estimate:173Source: Census ACS
2025 ZC Population Estimate:199Source: ZIP-Codes.com
Population Density:6.2 people per sq mile
Average Income:$88,750Source: Census ACS
Households:94Source: Census DHC
Average House Value:$84,100Source: Census ACS
Persons Per Household:2.22Source: Census DHC
Average Family Size:2.69Source: Census ACS

Population Over Time (with 2010 & 2020 Census Benchmarks)


Group20102011210220132014201520162017201820192020202120222023
Census ACS Population Estimate--229210214179208203227232258332232216173
Decennial Census253------------------209------
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP05. DEMOGRAPHIC AND HOUSING ESTIMATES

Population by Age & Gender (Total, Male, Female)


Median Age: 45.8

Male Median Age: 45

Female Median Age: 46.2

Group< 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485+
Male10838541772310995384
Female74752331179511576551
Total171210137741814118211416118135
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Population by Race


White:19594.20%
Black:00%
Hispanic:*83.86%
Asian:00%
American Indian:10.48%
Hawaiian:00%
Other:31.45%
Total:207100%
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)
* NOTE: Hispanic or Latino is an ethnicity, not a race. This means individuals who identify as Hispanic will also be included in one of the race categories (such as White or Black). As a result, the totals shown here may exceed 100% when Hispanic is displayed alongside racial groups.

Gender Breakdown


GenderCount%Median Age
Males:10650.72%45.0 years
Females:10349.28%46.2 years
Total:209100%45.8 years
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Nativity & Citizenship


Native, born in the United States:14181.50%
Native, born in PR, Island Areas, or abroad:00.00%
Foreign born, naturalized U.S. citizen:21.16%
Foreign born, not a U.S. citizen:3018.50%
Total Population:173100%
Total Native Population:14181.50%
Total Foreign-born Population:3218.50%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS
Note: Nativity and Citizenship derived from American Community Survey (ACS) 5-year estimates. Total Population listed here will not match official ZIP Code population totals, which are based on the Decennial Census.

Income & Employment


In 2023, the Median household income is $88,750, which is considerably higher than the state median ($73,147), is up $44,583 (100.9%) since 2011 and above its 2019 pre-pandemic level by $88,750. Family households earn a median of $90,625 versus $0 for nonfamily households (a difference of $90,625). By gender, male median income is $116,500 and female is $0, which is well under the state female median ($49,410), with a current gap of $116,500 that has widened from 2011 to 2023. The labor-force participation rate is 25.9%, which is much lower than the state rate (66.5%). The unemployment rate is 21.4%, which is considerably above the state rate (3.6%). The largest occupation group is Management (64.3%).

Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. Using data from Tables DP02, DP03, DP04 and DP05.

Median Income Over Time (Household, Family, Nonfamily, Male, Female)


Income Type2011201220132014201520162017201820192020202120222023
Median Household Income$44,167$45,625$54,583$46,250$46,042$47,500$37,371$37,212$0$71,750$65,625$83,750$88,750
Median Family Income$48,750$55,625$59,063$50,000$54,167$53,750$37,269$0$70,833$107,974$80,435$85,766$90,625
Median NonFamily Income$31,250$37,500$41,250$41,250$39,688$42,083$40,500$0$0$0$0$0$0
Median Male Income$41,250$48,750$53,438$52,679$0$48,438$50,500$50,417$0$37,315$73,125$113,750$116,500
Median Female Income$37,500$30,625$31,719$38,750$0$38,750$40,250$41,500$42,188$41,336$0$0$0
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Average Household Income


Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment Status


Employed:2817.28%
Unemployed:95.56%
Not In Labor Force:12577.16%
Total:162100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment by Occupation (Civilian Employed Population, 16 and Over)


Management, business, science, and arts:1864.29%
Service:517.86%
Sales and Office:414.29%
Natural resources, construction, and maintenance:13.57%
Production, transportation, and material moving:00.00%
Total Civilian Employed Population:28100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS.

Housing & Affordability


In 2023, the median home value is $84,100, which is much lower than the national median ($303,400), is up $27,400 (48.32%) since 2011 and below its 2019 pre-pandemic level by $23,200. The median gross rent is $0, which is far less than the state median ($949), is down $475 (100.00%) since 2011 and below its 2019 pre-pandemic level by $575. Of occupied housing, owners make up 94.59% (5.71% with a mortgage, 94.29% free-and-clear) and renters 5.41% - making this ZIP Code more home ownership than the state and under national rental averages. The vacancy rate is 40.80%, which is far higher than the state rate (8.65%).

Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. Using data from Table DP03, SELECTED ECONOMIC CHARACTERISTICS.

Median Home Value (Comparison)


Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Home Value Over Time


Group2011210220132014201520162017201820192020202120222023
Median Home Value$56,700$64,200$114,600$100,000$93,300$90,800$106,300$105,800$107,300$76,100$76,500$83,300$84,100
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Gross Rent Paid


Less than $500:00.00%
$500 to $999:250.00%
$1,000 to $1,499:00.00%
$1,500 to $1,999:00.00%
$2,000 to $2,499:00.00%
$2,500 to $2,999:00.00%
$3,000 or more:00.00%
No Rent:250.00%
Total:4100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Gross Rent Over Time


Group2011210220132014201520162017201820192020202120222023
Median Rent$475$525$517$535$533$556$538$600$575$500$525$542$0
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Housing Occupancy


Owner Occupied (with mortgage):45.41%
Owner Occupied (free and clear, no mortgage):6689.19%
Renter Occupied:45.41%
Total Occupied Housing Units:74100%

Occupied Housing Units:7459.20%
Vacant Housing Units (not graphed):5140.80%
Total Housing Units:125100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Housing Type (Single-Family, Multi-Family, Other)


Single-Family Units:8668.80%
Multi-Family Units:21.60%
Other Units:3729.60%
Total Housing Units:125100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Education, Health & Community


In 2023, 32.20% of adults (25+) have a bachelor's degree or higher, which is comparable to the national rate (35.00%). High school or higher is 97.20%, which is far higher than the national rate (89.40%). The uninsured rate is 0.00%, which is comparable to the national rate (8.60%). Private coverage is 50.00%, which is generally lower than the state rate (72.90%). Public coverage is 76.80%, which is far higher than the national rate (36.30%). The share of people in poverty is 3.60%, which is comparable to the national rate (8.70%), down 0.60 percentage points since 2011 and below its 2019 pre-pandemic level by 6.40 percentage points. Poverty has been broadly stable, which may reflect structural barriers or offsetting gains and setbacks. Among residents ages 3+, the largest enrollment group is high school (43.48%). College enrollment is 43.48%, which is on par with the state rate (25.40%), meaning the community mirrors broader higher-education participation.

Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. Using data from Tables DP02 and DP03.

Educational Attainment of Adults (25 and Older)


Less than 9th grade:00.00%
9th to 12th grade, no diploma:42.80%
High school graduate (includes equivalency):6746.85%
Some college, no degree:2517.48%
Associate's degree:10.70%
Bachelor's degree:3826.57%
Graduate or professional degree:85.59%
Total:143100%
High school or higher:13997.20%
Bachelor's degree or higher:4632.17%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Health Insurance Coverage by Type (Private, Public, Uninsured)


Private Insurance:8439.44%
Public Insurance:12960.56%
No Insurance:00.00%
Total:213100%
Has Health Insurance:213100.00%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Percentage of People in Poverty Over Time (2011-2023)


Group2011210220132014201520162017201820192020202120222023
% of People in Poverty4.2%7.0%1.8%11.5%16.1%20.4%11.7%13.9%10.0%3.8%4.4%4.6%3.6%
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.

School Enrollment by Education Level (Ages 3 and Older)


Nursery School, Preschool:00.00%
Kindergarten:00.00%
Elementary school (grades 1-8):313.04%
High school (grades 9-12):1043.48%
College or graduate school:1043.48%
Total:23100%
Early Childhood:00.00%
K-12 (Primary & Secondary School):1356.52%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Business & Employment Statistics


ZIP Code 51044 supports both business and residential activity. According to the Business Census (2023), there are 5 business establishments, employing about 15 people with an annual payroll of $635,000. USPS data shows 90 residential mailboxes and 1 business mailboxes, reflecting local delivery coverage.

# Residential Mailboxes:90Source: USPS
# Business Mailboxes:1Source: USPS
Total Delivery Receptacles:429Source: USPS
Single Family Delivery Units:90Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:5Source: CBP
1st Quarter Payroll:$124,000Source: CBP
Annual Payroll:$635,000Source: CBP
# of Employees:15Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 51044 is located in Woodbury County, Iowa, within the Sioux City, IA-NE-SD Metropolitan Statistical Area (CBSA 43580) and Iowa's 4th Congressional District. This Metro area has a population of 144,007 people, about 0.15% of whom live in ZIP Code 51044. It covers 33.676 sq mi of land and a water area of 0.063 sq mi.

CBSA Name:Sioux City, IA-NE-SDSource: Census
CBSA Number:43580Source: Census
CBSA Type:MetroSource: Census
CBSA Division:--Source: Census
CBSA Population:144,007Source: Census
MSA:Sioux City, IA-NE MSASource: Census
Land Area:33.676 sq miSource: Census
Water Area:0.063 sq miSource: Census
Congressional District:04Source: USPS
Congressional Land Area:22756.75 sq miSource: Census
PMSA:--Source: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:1960240Source: Census
Place Name:Oto city; IowaSource: Census

Adjacent & Nearby ZIP Codes


51045 | | 51041

Schools in ZIP Code 51044


We could not locate which school district 51044 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.

Mvao Middle School 110 W Division
Anthon, IA 51004
District: Maple Valley-Anthon Oto Community School DistrictNearby
Anthon Elementary 110 W Division
Anthon, IA 51004
District: Maple Valley-Anthon Oto Community School DistrictNearby
River Valley Junior- Senior High School 916 Hackberry St
Correctionville, IA 51016
District: River Valley Community School DistrictNearby
Moville Elementary School 408 South 4th Street
Moville, IA 51039
District: Woodbury Central Community School DistrictNearby
Woodbury Central Middle School 408 S 4th St
Moville, IA 51039
District: Woodbury Central Community School DistrictNearby
Danbury Catholic School 602 Peach St
Danbury, IA 51019
District: Private SchoolNearby
Souixland Christian School 6000 Gordon Dr
Sioux City, IA 51106
District: Private SchoolNearby
Mater Dei School Nativity Center 4243 Natalia Way
Sioux City, IA 51106
District: Private SchoolNearby

Colleges & Post Secondary Schools near ZIP Code 51044


Nebraska Indian Community College 1111 Hwy 75
Macy, NE 68039-0428
Type: Post Secondary
Iowa School Of Beauty-Sioux City 3320 Line Drive
Sioux City, IA 51106
Type: Post Secondary
Western Iowa Tech Community College 4647 Stone Ave
Sioux City, IA 51102-5199
Type: Post Secondary
Morningside University 1501 Morningside Ave
Sioux City, IA 51106-1751
Type: Post Secondary
Little Priest Tribal College 601 E. College Drive
Winnebago, NE 68071-0270
Type: Post Secondary
Little Priest Tribal College - Ho Chunk Centre 600 Fourth Street, Suite 229
Sioux City, IA 51102-0600
Type: Post Secondary

Sources & References


Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on October 1, 2025.

  1. U.S. Postal Service [Last Updated: 10/1/2025], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 10/1/2025], https://www.zip-codes.com
  3. U.S. Census [Updated: Varies], https://www.census.gov
    • U.S. Census Office of Management and Budget [Updated: As Released]
    • U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
    • U.S. Census 2011-2023 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
    • U.S. Census Business Patterns (CBD) [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 10/1/2025], https://nces.ed.gov