51103 ZIP Code
Sioux City, Iowa
December 13, 2025
| ZIP Code: | 51103 |
| City/Town: | Sioux City |
| County: | Woodbury |
| State: | Iowa |
| ZIP Type: | Standard |
| Population: | 17,005 |
| Median Household Income: | $55,284 |
| Per Capita Income: | $33,863 |
| Total Housing Units: | 6,801 |
| Median Home Value: | $118,000 |
| Land Area: | 12.1 sq miles
31.2 sq km |
| Water Area: | 0.2 sq miles
0.5 sq km |
| Coordinates: | 42.5197, -96.4493 |
Population Information (51103 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total Population: | 17,005 | -- | -- |
| Male: | 8,229 | 48.4% | 49.6% |
| Female: | 8,776 | 51.6% | 50.4% |
| Median Age: | 35.0 yrs | -- | 38.5 yrs |
| Under 5 years: | 1,081 | 6.4% | 5.7% |
| 5 to 9 years: | 1,297 | 7.6% | 6.0% |
| 10 to 14 years: | 1,570 | 9.2% | 6.5% |
| 15 to 19 years: | 1,303 | 7.7% | 6.6% |
| 20 to 24 years: | 1,139 | 6.7% | 6.7% |
| 25 to 34 years: | 2,118 | 12.5% | 13.7% |
| 35 to 44 years: | 1,821 | 10.7% | 12.9% |
| 45 to 54 years: | 2,015 | 11.8% | 12.4% |
| 55 to 59 years: | 1,068 | 6.3% | 6.5% |
| 60 to 64 years: | 1,010 | 5.9% | 6.4% |
| 65 to 74 years: | 1,716 | 10.1% | 9.7% |
| 75 to 84 years: | 557 | 3.3% | 4.8% |
| 85 years and over: | 310 | 1.8% | 2.0% |
Housing Information (51103 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Median home value: | $118,000 | -- | $281,900 |
| Median rooms: | 5.7 | -- | 5.5 |
| Median rent: | $883 / mo. | -- | $1,268 / mo. |
| Total housing units: | 6,801 | -- | -- |
| Occupied housing units: | 6,431 | 94.6% | 38.0% |
| Vacant housing units: | 370 | 5.4% | 4.6% |
| Housing tenure: | -- | -- | -- |
| Owner-occupied: | 4,017 | 62.5% | 64.8% |
| Renter-occupied: | 2,414 | 37.5% | 35.2% |
Educational Attainment (51103 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Population 25 years and over: | 10,615 | -- | -- |
| Less than 9th grade: | 1,281 | 12.1% | 4.7% |
| 9th to 12th grade, no diploma: | 1,112 | 10.5% | 6.1% |
| High school graduate: | 3,588 | 33.8% | 26.4% |
| Some college, no degree: | 2,073 | 19.5% | 19.7% |
| Associate degree: | 893 | 8.4% | 8.7% |
| Bachelor's degree: | 1,188 | 11.2% | 20.9% |
| Graduate or professional degree: | 480 | 4.5% | 13.7% |
| Percent high school graduate or higher: | -- | 77.5% | 89.1% |
| Percent bachelor's degree or higher: | -- | 15.7% | 34.3% |
Income Information (51103 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median household income: | $55,284 / yr. | $75,149 / yr. |
| Mean household income: | $68,104 / yr. | $105,833 / yr. |
| Median family income: | $63,125 / yr. | $92,646 / yr. |
| Per capita income: | $33,863 / yr. | $41,261 / yr. |
Employment (51103 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| In labor force: | 8,164 | -- | 63.5% |
| Employed: | 7,796 | 95.5% | 96.4% |
| Unemployed: | 368 | 4.5% | 5.3% |
| Not in labor force: | 4,532 | -- | -- |
| Class of Worker: | -- | -- | -- |
| Private wage and salary: | 6,658 | 85.4% | 79.7% |
| Government workers: | 639 | 8.2% | 14.2% |
| Self-employed: | 494 | 6.3% | 5.9% |
| Unpaid family workers: | 5 | 0.1% | 0.1% |
Race & Ethnicity (51103 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Race (one race): | -- | -- | -- |
| White: | 10,881 | 64.0% | 61.6% |
| Black or African American: | 499 | 2.9% | 12.4% |
| American Indian/Alaska Native: | 780 | 4.6% | 1.1% |
| Asian: | 698 | 4.1% | 6.0% |
| Native Hawaiian/Pacific Islander: | 0 | 0.0% | 0.2% |
| Some other race: | 1,498 | 8.8% | 8.4% |
| Two or more races: | 2,649 | 15.6% | 10.2% |
| Hispanic or Latino (any race): | 3,311 | 19.5% | 18.7% |
| Mexican: | 5,259 | 30.9% | 11.2% |
| Puerto Rican: | 3,474 | 20.4% | 1.8% |
| Cuban: | 75 | 0.4% | 0.7% |
| Other Hispanic or Latino: | 0 | 0.0% | 5.0% |
| Not Hispanic or Latino: | 1,710 | 10.1% | 81.1% |
Income Distribution (51103 zip code)
| Household Income | Households | Percent% | US AvgUS |
|---|---|---|---|
| Less than $10,000: | 279 | 4.3% | 4.9% |
| $10,000 to $14,999: | 619 | 9.6% | 3.8% |
| $15,000 to $24,999: | 699 | 10.9% | 7.0% |
| $25,000 to $34,999: | 505 | 7.9% | 7.4% |
| $35,000 to $49,999: | 741 | 11.5% | 10.7% |
| $50,000 to $74,999: | 1,455 | 22.6% | 16.1% |
| $75,000 to $99,999: | 734 | 11.4% | 12.8% |
| $100,000 to $149,999: | 1,078 | 16.8% | 17.1% |
| $150,000 to $199,999: | 189 | 2.9% | 8.8% |
| $200,000 or more: | 132 | 2.1% | 11.4% |
Commute to Work (51103 zip code)
| Commute Method | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Drove alone: | 5,942 | 76.2% | 67.8% |
| Carpooled: | 816 | 10.5% | 8.7% |
| Public transportation: | 191 | 2.4% | 4.2% |
| Walked: | 99 | 1.3% | 2.5% |
| Other means: | 48 | 0.6% | 0.9% |
| Worked from home: | 401 | 5.1% | 13.8% |
| Mean travel time to work: | 16.8 min | -- | 26.7 min |
Industry (51103 zip code)
| Industry Sector | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Agriculture, forestry, fishing, mining: | 143 | 1.8% | 1.6% |
| Construction: | 738 | 9.5% | 6.9% |
| Manufacturing: | 1,672 | 21.4% | 10.0% |
| Wholesale trade: | 238 | 3.1% | 2.4% |
| Retail trade: | 915 | 11.7% | 11.0% |
| Transportation, warehousing, utilities: | 222 | 2.8% | 5.8% |
| Information: | 98 | 1.3% | 1.9% |
| Finance, insurance, real estate: | 317 | 4.1% | 6.7% |
| Professional, scientific, management: | 411 | 5.3% | 12.1% |
| Education, health care, social services: | 1,752 | 22.5% | 23.3% |
| Arts, entertainment, food services: | 850 | 10.9% | 9.0% |
| Other services: | 305 | 3.9% | 4.7% |
| Public administration: | 135 | 1.7% | 4.7% |
Poverty Status (51103 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Poverty Rate: | -- | 20.9% | 8.8% |
| All people below poverty level: | -- | -- | -- |
| Under 18 years: | -- | -- | 16.3% |
| 18 to 64 years: | -- | -- | 11.0% |
| 65 years and over: | -- | -- | 10.3% |
Health Insurance (51103 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| With health insurance: | 15,295 | 89.9% | 91.3% |
| Private health insurance: | 8,741 | 51.4% | 67.6% |
| Public health coverage: | 8,468 | 49.8% | 35.9% |
| Without health insurance: | 1,390 | 8.2% | 8.7% |
Benefits & Assistance (51103 zip code)
| Households with: | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Earnings: | 5,064 | 78.7% | 77.4% |
| Social Security income: | 2,173 | 33.8% | 31.0% |
| Retirement income: | 1,259 | 19.6% | 21.8% |
| Supplemental Security Income (SSI): | 549 | 8.5% | 4.5% |
| Cash public assistance income: | 246 | 3.8% | 1.8% |
| SNAP (food stamps) benefits: | 1,432 | 22.3% | 11.4% |
Housing Types (51103 zip code)
| Structure Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| 1-unit, detached: | 5,158 | 75.8% | 61.4% |
| 1-unit, attached: | 108 | 1.6% | 6.1% |
| 2 units: | 379 | 5.6% | 3.4% |
| 3 or 4 units: | 234 | 3.4% | 4.3% |
| 5 to 9 units: | 289 | 4.2% | 4.6% |
| 10 to 19 units: | 110 | 1.6% | 4.3% |
| 20 or more units: | 352 | 5.2% | 9.9% |
| Mobile home: | 171 | 2.5% | 5.8% |
| Boat, RV, van, etc.: | 0 | 0.0% | 0.1% |
Year Structure Built (51103 zip code)
| Year Built | Units | Percent% | US AvgUS |
|---|---|---|---|
| Built 2020 or later: | 0 | 0.0% | 0.6% |
| Built 2010 to 2019: | 204 | 3.0% | 8.2% |
| Built 2000 to 2009: | 335 | 4.9% | 13.5% |
| Built 1990 to 1999: | 391 | 5.7% | 13.2% |
| Built 1980 to 1989: | 160 | 2.4% | 13.2% |
| Built 1970 to 1979: | 602 | 8.9% | 14.6% |
| Built 1960 to 1969: | 644 | 9.5% | 10.2% |
| Built 1950 to 1959: | 823 | 12.1% | 9.9% |
| Built 1940 to 1949: | 1,033 | 15.2% | 4.6% |
| Built 1939 or earlier: | 2,609 | 38.4% | 12.0% |
Bedrooms (51103 zip code)
| Number of Bedrooms | Units | Percent% | US AvgUS |
|---|---|---|---|
| No bedroom (studio): | 186 | 2.7% | 2.4% |
| 1 bedroom: | 721 | 10.6% | 3.0% |
| 2 bedrooms: | 1,994 | 29.3% | 9.1% |
| 3 bedrooms: | 2,490 | 36.6% | 15.9% |
| 4 bedrooms: | 1,146 | 16.9% | 18.8% |
| 5 or more bedrooms: | 264 | 3.9% | 17.6% |
Heating Fuel (51103 zip code)
| Fuel Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| Utility gas: | 4,442 | 69.1% | 47.1% |
| Bottled, tank, or LP gas: | 152 | 2.4% | 4.9% |
| Electricity: | 1,689 | 26.3% | 40.2% |
| Fuel oil, kerosene, etc.: | 0 | 0.0% | 4.2% |
| Coal or coke: | 0 | 0.0% | 0.1% |
| Wood: | 0 | 0.0% | 1.5% |
| Solar energy: | 0 | 0.0% | 0.1% |
| Other fuel: | 4 | 0.1% | 0.5% |
| No fuel used: | 144 | 2.2% | 0.2% |
Vehicles Available (51103 zip code)
| Vehicles | Households | Percent% | US AvgUS |
|---|---|---|---|
| No vehicle available: | 665 | 10.3% | 8.3% |
| 1 vehicle available: | 2,027 | 31.5% | 32.6% |
| 2 vehicles available: | 2,361 | 36.7% | 37.0% |
| 3 or more vehicles available: | 1,378 | 21.4% | 22.1% |
Home Value Distribution (51103 zip code)
| Value Range | Owner Units | Percent% | US AvgUS |
|---|---|---|---|
| Less than $50,000: | 347 | 8.6% | 5.7% |
| $50,000 to $99,999: | 1,201 | 29.9% | 7.8% |
| $100,000 to $149,999: | 1,300 | 32.4% | 9.2% |
| $150,000 to $199,999: | 507 | 12.6% | 10.8% |
| $200,000 to $299,999: | 421 | 10.5% | 19.9% |
| $300,000 to $499,999: | 152 | 3.8% | 24.1% |
| $500,000 to $999,999: | 80 | 2.0% | 17.0% |
| $1,000,000 or more: | 9 | 0.2% | 5.6% |
Housing Costs (51103 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median owner costs (with mortgage): | $1,123 / mo. | $1,828 / mo. |
| Median owner costs (no mortgage): | $465 / mo. | $584 / mo. |
| Median gross rent: | $883 / mo. | $1,268 / mo. |
| Average household size (owner-occupied): | 2.45 | 2.53 |
| Average household size (renter-occupied): | 2.78 | 2.38 |
Households (51103 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total households: | 6,431 | -- | -- |
| Married-couple households: | 2,318 | 36.0% | 47.5% |
| Cohabiting couple households: | 965 | 15.0% | 7.0% |
| Male householder, no spouse: | 1,250 | 19.4% | 5.4% |
| Female householder, no spouse: | 2,203 | 34.3% | 12.7% |
| Householder living alone: | 2,263 | 35.2% | 28.6% |
| 65 years and over living alone: | 2,010 | 31.3% | 11.8% |
| Average household size: | 2.57 | -- | 2.53 |
| Average family size: | 3.22 | -- | -- |
Marital Status (51103 zip code)
| Population 15 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 6,227 | -- | -- |
| Never married: | 2,515 | 40.4% | 37.0% |
| Now married: | 2,636 | 42.3% | 49.5% |
| Separated: | 227 | 3.6% | 1.5% |
| Widowed: | 710 | 11.4% | 2.6% |
| Divorced: | 2,440 | 39.2% | 9.3% |
School Enrollment (51103 zip code)
| Population 3 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Enrolled in school: | 4,421 | -- | -- |
| Nursery school, preschool: | 173 | 3.9% | 5.8% |
| Kindergarten: | 216 | 4.9% | 5.0% |
| Elementary school (grades 1-8): | 2,432 | 55.0% | 40.5% |
| High school (grades 9-12): | 1,108 | 25.1% | 21.4% |
| College or graduate school: | 492 | 11.1% | 27.3% |
Veterans & Disability (51103 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Civilian population 18 years and over: | 12,277 | -- | -- |
| Veterans: | 689 | 5.6% | 6.3% |
| Civilian noninstitutionalized population: | 16,685 | -- | -- |
| With a disability: | 2,841 | 17.0% | 13.4% |
| Under 18 with disability: | 285 | 10.0% | 5.8% |
| 18 to 64 with disability: | 1,608 | 56.6% | 10.4% |
| 65 and over with disability: | 948 | 33.4% | 33.4% |
Mobility (Residence 1 Year Ago) (51103 zip code)
| Population 1 year and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Same house: | 15,340 | 90.2% | 86.9% |
| Different house: | 1,457 | 8.6% | 13.1% |
| Same county: | 692 | 47.5% | 7.0% |
| Different county: | 734 | 50.4% | 3.2% |
| Different state: | 369 | 25.3% | 2.5% |
| Abroad: | 31 | 2.1% | 0.4% |
Place of Birth (51103 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Native born: | 14,525 | 85.4% | 86.2% |
| Foreign born: | 337 | 2.0% | 13.9% |
| Naturalized citizen: | 2,480 | 735.9% | 52.7% |
| Not a citizen: | 2,480 | 735.9% | 47.3% |
| Foreign-born by region: | -- | -- | -- |
| Europe: | 2,480 | 735.9% | 10.5% |
| Asia: | 17 | 5.0% | 31.3% |
| Africa: | 166 | 49.3% | 5.5% |
| Oceania: | 0 | 0.0% | 0.5% |
| Latin America: | 1,747 | 518.4% | 50.0% |
| Northern America: | 0 | 0.0% | 2.2% |
Language Spoken at Home (51103 zip code)
| Population 5 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 15,924 | -- | -- |
| English only: | 10,975 | 68.9% | 78.3% |
| Language other than English: | 4,949 | 31.1% | 21.5% |
| By language: | -- | -- | -- |
| Spanish: | 3,965 | 24.9% | 13.3% |
| Other Indo-European languages: | 225 | 1.4% | 3.5% |
| Asian/Pacific Island languages: | 619 | 3.9% | 3.5% |
| Other languages: | 140 | 0.9% | 1.0% |
Computers & Internet (51103 zip code)
| Households | Percent% | US AvgUS | |
|---|---|---|---|
| Households with a computer: | 6,431 | 100.0% | 93.1% |
| Households with broadband internet: | 5,616 | 87.3% | 89.4% |
Sioux City, IA51103