51239 ZIP Code — Hull, IA
Sioux County, Iowa
ZIP code 51239 is located in Hull, Iowa, within Sioux County. It covers approximately 67.00 square miles and serves a population of 3,115 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 712.
About ZIP code 51239
The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1950s, giving the area an established character. Median home value is $224,200. Owner-occupancy is high at 89%, well above the national average.
The gap between median ($79,886) and mean household income suggests income inequality — a small number of higher earners pull the average up.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 13 minutes is near the national average.
Educational attainment is near the national average, with 24% of residents holding a bachelor's degree or higher.
3,115
population
67.00
sq mi land
Standard
ZIP type
Central (CT)
timezone
51239 ZIP code map
Cities in ZIP code 51239
Below are the cities the US Postal Service accepts for ZIP code 51239. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Hull | Acceptable |
| Hull | Preferred |
Nearby ZIP codes
51234 Boyden (6.5 mi)
51235 Doon (7.9 mi)
51250 Sioux Center (10 mi)
51247 Rock Valley (10.5 mi)
51041 Orange City (12.5 mi)
51237 George (12.8 mi)
51230 Alvord (13.4 mi)
51201 Sheldon (14.5 mi)
51246 Rock Rapids (14.9 mi)
51238 Hospers (15.5 mi)
51036 Maurice (15.7 mi)
51003 Alton (17 mi)
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 3,115 |
| Population density | 46 / sq mi |
| State FIPS | 19 |
| County FIPS | 167 |
| Geography | |
|---|---|
| Land area | 67.00 sq mi |
| Water area | 0.01 sq mi |
| Latitude | 43.1999 |
| Longitude | -96.1475 |
| Timezone | Central (CT) |
| Area code | 712 |
Total population by age
Gender
Race & ethnicity
Economics
updated 05/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 27.1% | 30.7% | 40.1% |
| $50k – $100k | 45.1% | 42.1% | 33.4% |
| $100k – $200k | 19.9% | 22.2% | 21.5% |
| Over $200k | 7.9% | 5.0% | 5.0% |
Demographics & statistics
3,115
Population
46
People per sq mi
36.1
Median age
$79,886
Median household income
$39,745
Per capita income
$224,200
Median home value
$798
Median monthly rent
89.0%
Home ownership
7.6%
Poverty rate
3.3%
Unemployment
976
Housing units
23.9%
Bachelor's or higher
Age distribution
Male
Female
99
Under 5
97
65
5–9
64
157
10–14
155
179
15–19
177
128
20–24
127
147
25–34
145
185
35–44
182
185
45–54
183
102
55–59
101
114
60–64
112
105
65–74
104
78
75–84
78
23
85+
23
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 895 | 28.7% |
| 18 and over | 2,220 | 71.3% |
| 65 and over | 411 | 13.2% |
| Median age | 36.1 years | |
Race & ethnicity
White
81.3%
Hispanic or Latino
9.2%
Other race
5.7%
Two or more races
3.6%
Black or African American
0.2%
| Group | Count | % |
|---|---|---|
| White | 2,789 | 81.3% |
| Hispanic or Latino | 317 | 9.2% |
| Other race | 197 | 5.7% |
| Two or more races | 123 | 3.6% |
| Black or African American | 6 | 0.2% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 27.1% | 30.7% | 40.1% |
| $50k – $100k | 45.1% | 42.1% | 33.4% |
| $100k – $200k | 19.9% | 22.2% | 21.5% |
| Over $200k | 7.9% | 5.0% | 5.0% |
Under $10k
0.4%
$10k–$15k
1.4%
$15k–$25k
5.8%
$25k–$35k
6.4%
$35k–$50k
12.0%
$50k–$75k
21.4%
$75k–$100k
17.6%
$100k–$150k
20.2%
$150k–$200k
5.1%
$200k+
9.7%
| Range | % of households |
|---|---|
| Under $10k | 0.4% |
| $10k–$15k | 1.4% |
| $15k–$25k | 5.8% |
| $25k–$35k | 6.4% |
| $35k–$50k | 12.0% |
| $50k–$75k | 21.4% |
| $75k–$100k | 17.6% |
| $100k–$150k | 20.2% |
| $150k–$200k | 5.1% |
| $200k+ | 9.7% |
| Median income | $79,886 |
Housing
Home values
Under $50k
1.4%
$50k–$100k
6.8%
$100k–$150k
13.7%
$150k–$200k
16.9%
$200k–$300k
45.3%
$300k–$500k
12.1%
$500k–$1M
1.3%
$1M+
2.5%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $224,200 |
| Median rent / month | $798 |
| Owner occupied | 89.0% |
| Renter occupied | 11.0% |
| Vacant | 3.1% |
| Single-family detached | 88.7% |
| Large apartment buildings | 3.2% |
| Mobile homes | 0.0% |
| Median rooms | 7.6 |
| Avg household size (owned) | 2.98 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 8.8% |
| 2000–2009 | 10.6% |
| 1990–1999 | 9.7% |
| 1980–1989 | 8.2% |
| 1970–1979 | 16.4% |
| 1960–1969 | 8.6% |
| 1950–1959 | 17.9% |
| 1940–1949 | 3.8% |
| 1939 or earlier | 15.9% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 2.8% |
| 1 bedroom | 2.7% |
| 2 bedrooms | 25.9% |
| 3 bedrooms | 22.7% |
| 4 bedrooms | 30.2% |
| 5+ bedrooms | 15.7% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 2.8% |
| 1 vehicle | 11.2% |
| 2 vehicles | 40.9% |
| 3 or more | 45.0% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 45.8% |
| Electricity | 43.9% |
| Propane / LP gas | 7.7% |
| No fuel used | 0.4% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 759 | 71.7% |
| Cohabiting couple | 41 | 3.9% |
| Male householder, no spouse | 101 | 9.5% |
| Female householder, no spouse | 157 | 14.8% |
| Households with children under 18 | 441 | 41.7% |
| Households with seniors (65+) | 243 | 23.0% |
| Average household size | 2.89 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 28.8% | 24.3% |
| Married | 66.3% | 60.0% |
| Separated | 1.2% | 1.7% |
| Widowed | 1.6% | 6.5% |
| Divorced | 2.1% | 7.5% |
Education
Less than 9th grade
5.1%
Some HS, no diploma
3.4%
HS graduate
28.8%
Some college, no degree
17.9%
Associate's degree
20.9%
Bachelor's degree
18.3%
Graduate / professional
5.6%
| Metric | % |
|---|---|
| HS diploma or higher | 91.5% |
| Bachelor's or higher | 23.9% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 44 | 4.8% |
| Kindergarten | 30 | 3.3% |
| Elementary school | 339 | 37.0% |
| High school | 334 | 36.4% |
| College / grad school | 170 | 18.5% |
Employment
Industry of employment
Education & healthcare
26.9%
Construction
13.2%
Agriculture & mining
10.9%
Manufacturing
9.4%
Retail trade
9.3%
Transportation & utilities
7.5%
Professional & management
6.8%
Other services
6.4%
Wholesale trade
3.7%
Finance & real estate
3.0%
Arts, food & hospitality
2.4%
Public administration
0.5%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 34.1% |
| Service | 14.0% |
| Sales & office | 14.6% |
| Natural resources & construction | 15.8% |
| Production & transportation | 21.5% |
Employment type
| Type | % |
|---|---|
| Private sector | 81.4% |
| Government | 8.9% |
| Self-employed | 9.7% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 79.2% |
| Carpool | 9.1% |
| Public transit | 0.0% |
| Walk | 2.4% |
| Work from home | 7.4% |
| Other means | 1.9% |
| Avg commute (minutes) | 13.3 |
Poverty
All people
7.6%
Under 18 years
14.4%
18 and over
4.8%
Married-couple families
1.6%
Female-led households
16.7%
Income support
| Source | % of households |
|---|---|
| Social Security | 24.0% |
| Retirement income | 9.5% |
| Supplemental Security | 0.9% |
| Cash public assistance | 0.0% |
| Food stamps / SNAP | 2.4% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 34.0% |
| High blood pressure | 30.0% |
| High cholesterol | 31.1% |
| Diabetes | 8.2% |
| Heart disease | 5.5% |
| Stroke | 2.5% |
| Asthma | 8.6% |
| Arthritis | 22.0% |
| Kidney disease | 2.5% |
| Pulmonary disease | 5.2% |
| Cancer | 6.8% |
| Behavior / access | % |
|---|---|
| Smoking | 14.3% |
| Binge drinking | 21.0% |
| No physical activity | 21.2% |
| Less than 7 hrs sleep | 27.7% |
| Depression | 15.8% |
| Fair or poor health | 10.0% |
| Poor mental health | 12.4% |
| Poor physical health | 7.8% |
| No health insurance | 9.1% |
| Visited doctor (checkup) | 74.4% |
| Visited dentist | 72.2% |
| Cholesterol screening | 88.3% |
| Teeth loss | 11.0% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 95 | 4.3% |
| Disability | % |
|---|---|
| Any disability | 7.3% |
| Under 18 | 0.3% |
| 18–64 years | 4.0% |
| 65 and over | 40.1% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 83.0% |
| Public insurance | 23.5% |
| No insurance | 3.6% |
| Uninsured under 19 | 1.5% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 2,919 | 93.7% |
| Spanish | 135 | 4.6% |
| Other Indo-European | 135 | 4.6% |
| Asian & Pacific Islander | 0 | 0.0% |
| Other languages | 0 | 0.0% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 2,956 | 94.9% |
| Born in same state | 2,956 | 94.9% |
| Born in different state | 2,296 | 73.7% |
| Foreign born | 0 | 0.0% |
| Naturalized citizen | 159 | 5.1% |
| Not a US citizen | 67 | 42.1% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| English | 1,568 | 50.3% |
| Arab | 184 | 5.9% |
| Polish | 117 | 3.8% |
| Ancestry | Count | % |
|---|---|---|
| Italian | 77 | 2.5% |
| French | 51 | 1.6% |
| Dutch | 5 | 0.2% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 34.0% |
| Internet access | 97.6% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 51239
What city is ZIP code 51239 in?
ZIP code 51239 is primarily assigned to Hull, Iowa.
What county is ZIP code 51239 in?
ZIP code 51239 falls within Sioux County, Iowa.
Is ZIP code 51239 mostly owner-occupied?
89% of occupied units in ZIP code 51239 are owner-occupied, well above the national average.
What is the population of ZIP code 51239?
ZIP code 51239 has an estimated population of 3,115 residents, with a density of 46 people per square mile.
What is the typical home value in ZIP code 51239?
The median home value in ZIP code 51239 is $224,200.
What is the median household income in ZIP code 51239?
The median household income in ZIP code 51239 is $79,886, above the national median of ~$75,000.
What timezone is ZIP code 51239 in?
ZIP code 51239 observes the CST timezone.