50138 ZIP Code
Knoxville, Iowa
December 14, 2025
| ZIP Code: | 50138 |
| City/Town: | Knoxville |
| County: | Marion |
| State: | Iowa |
| ZIP Type: | Standard |
| Population: | 12,086 |
| Median Household Income: | $65,341 |
| Per Capita Income: | $44,841 |
| Total Housing Units: | 5,544 |
| Median Home Value: | $153,600 |
| Land Area: | 168.2 sq miles
435.5 sq km |
| Water Area: | 7.6 sq miles
19.8 sq km |
| Coordinates: | 41.3029, -93.1077 |
Population Information (50138 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total Population: | 12,086 | -- | -- |
| Male: | 5,688 | 47.1% | 49.6% |
| Female: | 6,398 | 52.9% | 50.4% |
| Median Age: | 42.3 yrs | -- | 38.5 yrs |
| Under 5 years: | 486 | 4.0% | 5.7% |
| 5 to 9 years: | 692 | 5.7% | 6.0% |
| 10 to 14 years: | 822 | 6.8% | 6.5% |
| 15 to 19 years: | 781 | 6.5% | 6.6% |
| 20 to 24 years: | 815 | 6.7% | 6.7% |
| 25 to 34 years: | 1,504 | 12.4% | 13.7% |
| 35 to 44 years: | 1,227 | 10.2% | 12.9% |
| 45 to 54 years: | 1,415 | 11.7% | 12.4% |
| 55 to 59 years: | 919 | 7.6% | 6.5% |
| 60 to 64 years: | 801 | 6.6% | 6.4% |
| 65 to 74 years: | 1,513 | 12.5% | 9.7% |
| 75 to 84 years: | 578 | 4.8% | 4.8% |
| 85 years and over: | 533 | 4.4% | 2.0% |
Housing Information (50138 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Median home value: | $153,600 | -- | $281,900 |
| Median rooms: | 5.7 | -- | 5.5 |
| Median rent: | $790 / mo. | -- | $1,268 / mo. |
| Total housing units: | 5,544 | -- | -- |
| Occupied housing units: | 5,126 | 92.5% | 38.0% |
| Vacant housing units: | 418 | 7.5% | 4.6% |
| Housing tenure: | -- | -- | -- |
| Owner-occupied: | 3,878 | 75.7% | 64.8% |
| Renter-occupied: | 1,248 | 24.3% | 35.2% |
Educational Attainment (50138 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Population 25 years and over: | 8,490 | -- | -- |
| Less than 9th grade: | 113 | 1.3% | 4.7% |
| 9th to 12th grade, no diploma: | 431 | 5.1% | 6.1% |
| High school graduate: | 3,166 | 37.3% | 26.4% |
| Some college, no degree: | 1,806 | 21.3% | 19.7% |
| Associate degree: | 935 | 11.0% | 8.7% |
| Bachelor's degree: | 1,483 | 17.5% | 20.9% |
| Graduate or professional degree: | 556 | 6.5% | 13.7% |
| Percent high school graduate or higher: | -- | 93.6% | 89.1% |
| Percent bachelor's degree or higher: | -- | 24.0% | 34.3% |
Income Information (50138 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median household income: | $65,341 / yr. | $75,149 / yr. |
| Mean household income: | $85,116 / yr. | $105,833 / yr. |
| Median family income: | $77,065 / yr. | $92,646 / yr. |
| Per capita income: | $44,841 / yr. | $41,261 / yr. |
Employment (50138 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| In labor force: | 5,899 | -- | 63.5% |
| Employed: | 5,688 | 97.0% | 96.4% |
| Unemployed: | 175 | 3.0% | 5.3% |
| Not in labor force: | 3,870 | -- | -- |
| Class of Worker: | -- | -- | -- |
| Private wage and salary: | 4,696 | 82.6% | 79.7% |
| Government workers: | 691 | 12.1% | 14.2% |
| Self-employed: | 301 | 5.3% | 5.9% |
| Unpaid family workers: | 0 | 0.0% | 0.1% |
Race & Ethnicity (50138 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Race (one race): | -- | -- | -- |
| White: | 11,423 | 94.5% | 61.6% |
| Black or African American: | 66 | 0.5% | 12.4% |
| American Indian/Alaska Native: | 10 | 0.1% | 1.1% |
| Asian: | 78 | 0.6% | 6.0% |
| Native Hawaiian/Pacific Islander: | 10 | 0.1% | 0.2% |
| Some other race: | 16 | 0.1% | 8.4% |
| Two or more races: | 483 | 4.0% | 10.2% |
| Hispanic or Latino (any race): | 74 | 0.6% | 18.7% |
| Mexican: | 260 | 2.2% | 11.2% |
| Puerto Rican: | 216 | 1.8% | 1.8% |
| Cuban: | 0 | 0.0% | 0.7% |
| Other Hispanic or Latino: | 0 | 0.0% | 5.0% |
| Not Hispanic or Latino: | 44 | 0.4% | 81.1% |
Income Distribution (50138 zip code)
| Household Income | Households | Percent% | US AvgUS |
|---|---|---|---|
| Less than $10,000: | 166 | 3.2% | 4.9% |
| $10,000 to $14,999: | 298 | 5.8% | 3.8% |
| $15,000 to $24,999: | 282 | 5.5% | 7.0% |
| $25,000 to $34,999: | 411 | 8.0% | 7.4% |
| $35,000 to $49,999: | 661 | 12.9% | 10.7% |
| $50,000 to $74,999: | 1,109 | 21.6% | 16.1% |
| $75,000 to $99,999: | 741 | 14.5% | 12.8% |
| $100,000 to $149,999: | 799 | 15.6% | 17.1% |
| $150,000 to $199,999: | 375 | 7.3% | 8.8% |
| $200,000 or more: | 284 | 5.5% | 11.4% |
Commute to Work (50138 zip code)
| Commute Method | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Drove alone: | 4,620 | 81.2% | 67.8% |
| Carpooled: | 391 | 6.9% | 8.7% |
| Public transportation: | 0 | 0.0% | 4.2% |
| Walked: | 65 | 1.1% | 2.5% |
| Other means: | 137 | 2.4% | 0.9% |
| Worked from home: | 402 | 7.1% | 13.8% |
| Mean travel time to work: | 22.3 min | -- | 26.7 min |
Industry (50138 zip code)
| Industry Sector | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Agriculture, forestry, fishing, mining: | 185 | 3.3% | 1.6% |
| Construction: | 247 | 4.3% | 6.9% |
| Manufacturing: | 1,443 | 25.4% | 10.0% |
| Wholesale trade: | 20 | 0.4% | 2.4% |
| Retail trade: | 585 | 10.3% | 11.0% |
| Transportation, warehousing, utilities: | 380 | 6.7% | 5.8% |
| Information: | 132 | 2.3% | 1.9% |
| Finance, insurance, real estate: | 418 | 7.3% | 6.7% |
| Professional, scientific, management: | 188 | 3.3% | 12.1% |
| Education, health care, social services: | 1,212 | 21.3% | 23.3% |
| Arts, entertainment, food services: | 369 | 6.5% | 9.0% |
| Other services: | 269 | 4.7% | 4.7% |
| Public administration: | 240 | 4.2% | 4.7% |
Poverty Status (50138 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Poverty Rate: | -- | 9.9% | 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 (50138 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| With health insurance: | 11,444 | 94.7% | 91.3% |
| Private health insurance: | 8,470 | 70.1% | 67.6% |
| Public health coverage: | 5,220 | 43.2% | 35.9% |
| Without health insurance: | 445 | 3.7% | 8.7% |
Benefits & Assistance (50138 zip code)
| Households with: | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Earnings: | 3,803 | 74.2% | 77.4% |
| Social Security income: | 1,905 | 37.2% | 31.0% |
| Retirement income: | 1,363 | 26.6% | 21.8% |
| Supplemental Security Income (SSI): | 197 | 3.8% | 4.5% |
| Cash public assistance income: | 99 | 1.9% | 1.8% |
| SNAP (food stamps) benefits: | 584 | 11.4% | 11.4% |
Housing Types (50138 zip code)
| Structure Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| 1-unit, detached: | 4,303 | 77.6% | 61.4% |
| 1-unit, attached: | 82 | 1.5% | 6.1% |
| 2 units: | 117 | 2.1% | 3.4% |
| 3 or 4 units: | 219 | 4.0% | 4.3% |
| 5 to 9 units: | 282 | 5.1% | 4.6% |
| 10 to 19 units: | 57 | 1.0% | 4.3% |
| 20 or more units: | 62 | 1.1% | 9.9% |
| Mobile home: | 422 | 7.6% | 5.8% |
| Boat, RV, van, etc.: | 0 | 0.0% | 0.1% |
Year Structure Built (50138 zip code)
| Year Built | Units | Percent% | US AvgUS |
|---|---|---|---|
| Built 2020 or later: | 0 | 0.0% | 0.6% |
| Built 2010 to 2019: | 333 | 6.0% | 8.2% |
| Built 2000 to 2009: | 491 | 8.9% | 13.5% |
| Built 1990 to 1999: | 666 | 12.0% | 13.2% |
| Built 1980 to 1989: | 412 | 7.4% | 13.2% |
| Built 1970 to 1979: | 1,014 | 18.3% | 14.6% |
| Built 1960 to 1969: | 722 | 13.0% | 10.2% |
| Built 1950 to 1959: | 476 | 8.6% | 9.9% |
| Built 1940 to 1949: | 346 | 6.2% | 4.6% |
| Built 1939 or earlier: | 1,084 | 19.6% | 12.0% |
Bedrooms (50138 zip code)
| Number of Bedrooms | Units | Percent% | US AvgUS |
|---|---|---|---|
| No bedroom (studio): | 64 | 1.2% | 2.4% |
| 1 bedroom: | 540 | 9.7% | 3.0% |
| 2 bedrooms: | 1,493 | 26.9% | 9.1% |
| 3 bedrooms: | 2,351 | 42.4% | 15.9% |
| 4 bedrooms: | 865 | 15.6% | 18.8% |
| 5 or more bedrooms: | 231 | 4.2% | 17.6% |
Heating Fuel (50138 zip code)
| Fuel Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| Utility gas: | 3,255 | 63.5% | 47.1% |
| Bottled, tank, or LP gas: | 856 | 16.7% | 4.9% |
| Electricity: | 901 | 17.6% | 40.2% |
| Fuel oil, kerosene, etc.: | 0 | 0.0% | 4.2% |
| Coal or coke: | 0 | 0.0% | 0.1% |
| Wood: | 47 | 0.9% | 1.5% |
| Solar energy: | 0 | 0.0% | 0.1% |
| Other fuel: | 67 | 1.3% | 0.5% |
| No fuel used: | 0 | 0.0% | 0.2% |
Vehicles Available (50138 zip code)
| Vehicles | Households | Percent% | US AvgUS |
|---|---|---|---|
| No vehicle available: | 271 | 5.3% | 8.3% |
| 1 vehicle available: | 1,607 | 31.3% | 32.6% |
| 2 vehicles available: | 1,876 | 36.6% | 37.0% |
| 3 or more vehicles available: | 1,372 | 26.8% | 22.1% |
Home Value Distribution (50138 zip code)
| Value Range | Owner Units | Percent% | US AvgUS |
|---|---|---|---|
| Less than $50,000: | 362 | 9.3% | 5.7% |
| $50,000 to $99,999: | 699 | 18.0% | 7.8% |
| $100,000 to $149,999: | 819 | 21.1% | 9.2% |
| $150,000 to $199,999: | 618 | 15.9% | 10.8% |
| $200,000 to $299,999: | 722 | 18.6% | 19.9% |
| $300,000 to $499,999: | 340 | 8.8% | 24.1% |
| $500,000 to $999,999: | 287 | 7.4% | 17.0% |
| $1,000,000 or more: | 31 | 0.8% | 5.6% |
Housing Costs (50138 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median owner costs (with mortgage): | $1,238 / mo. | $1,828 / mo. |
| Median owner costs (no mortgage): | $521 / mo. | $584 / mo. |
| Median gross rent: | $790 / mo. | $1,268 / mo. |
| Average household size (owner-occupied): | 2.44 | 2.53 |
| Average household size (renter-occupied): | 1.92 | 2.38 |
Households (50138 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total households: | 5,126 | -- | -- |
| Married-couple households: | 2,806 | 54.7% | 47.5% |
| Cohabiting couple households: | 1,057 | 20.6% | 7.0% |
| Male householder, no spouse: | 848 | 16.5% | 5.4% |
| Female householder, no spouse: | 1,101 | 21.5% | 12.7% |
| Householder living alone: | 1,623 | 31.7% | 28.6% |
| 65 years and over living alone: | 1,738 | 33.9% | 11.8% |
| Average household size: | 2.31 | -- | 2.53 |
| Average family size: | 2.82 | -- | -- |
Marital Status (50138 zip code)
| Population 15 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 4,856 | -- | -- |
| Never married: | 1,277 | 26.3% | 37.0% |
| Now married: | 2,848 | 58.6% | 49.5% |
| Separated: | 166 | 3.4% | 1.5% |
| Widowed: | 532 | 11.0% | 2.6% |
| Divorced: | 1,054 | 21.7% | 9.3% |
School Enrollment (50138 zip code)
| Population 3 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Enrolled in school: | 2,641 | -- | -- |
| Nursery school, preschool: | 76 | 2.9% | 5.8% |
| Kindergarten: | 148 | 5.6% | 5.0% |
| Elementary school (grades 1-8): | 1,258 | 47.6% | 40.5% |
| High school (grades 9-12): | 714 | 27.0% | 21.4% |
| College or graduate school: | 445 | 16.8% | 27.3% |
Veterans & Disability (50138 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Civilian population 18 years and over: | 9,430 | -- | -- |
| Veterans: | 970 | 10.3% | 6.3% |
| Civilian noninstitutionalized population: | 11,889 | -- | -- |
| With a disability: | 2,212 | 18.6% | 13.4% |
| Under 18 with disability: | 90 | 4.1% | 5.8% |
| 18 to 64 with disability: | 1,061 | 48.0% | 10.4% |
| 65 and over with disability: | 1,061 | 48.0% | 33.4% |
Mobility (Residence 1 Year Ago) (50138 zip code)
| Population 1 year and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Same house: | 10,535 | 87.2% | 86.9% |
| Different house: | 1,491 | 12.3% | 13.1% |
| Same county: | 1,014 | 68.0% | 7.0% |
| Different county: | 477 | 32.0% | 3.2% |
| Different state: | 102 | 6.8% | 2.5% |
| Abroad: | 0 | 0.0% | 0.4% |
Place of Birth (50138 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Native born: | 11,911 | 98.6% | 86.2% |
| Foreign born: | 29 | 0.2% | 13.9% |
| Naturalized citizen: | 175 | 603.4% | 52.7% |
| Not a citizen: | 175 | 603.4% | 47.3% |
| Foreign-born by region: | -- | -- | -- |
| Europe: | 175 | 603.4% | 10.5% |
| Asia: | 19 | 65.5% | 31.3% |
| Africa: | 25 | 86.2% | 5.5% |
| Oceania: | 8 | 27.6% | 0.5% |
| Latin America: | 28 | 96.6% | 50.0% |
| Northern America: | 17 | 58.6% | 2.2% |
Language Spoken at Home (50138 zip code)
| Population 5 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 11,600 | -- | -- |
| English only: | 11,385 | 98.1% | 78.3% |
| Language other than English: | 215 | 1.9% | 21.5% |
| By language: | -- | -- | -- |
| Spanish: | 137 | 1.2% | 13.3% |
| Other Indo-European languages: | 67 | 0.6% | 3.5% |
| Asian/Pacific Island languages: | 0 | 0.0% | 3.5% |
| Other languages: | 11 | 0.1% | 1.0% |
Computers & Internet (50138 zip code)
| Households | Percent% | US AvgUS | |
|---|---|---|---|
| Households with a computer: | 5,126 | 100.0% | 93.1% |
| Households with broadband internet: | 4,565 | 89.1% | 89.4% |
Knoxville, IA50138