PlainZIP

Hull, IA · standard

ZIP Code 51239

Sioux County, Iowa — Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

3,123
18/sq mi
$77,540
Median income
$236,500
Median home value
20.6%
Bachelor's or higher

The verdict

Hull pairs an above-median household income with above-median home values, in a rural, homeowner-dominated area.

Top 41%
household income, US ZIPs
Top 46%
home value, US ZIPs
18
people per sq mi
84%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 51239 against every reporting US ZIP.

ZIP code 51239 is classified by USPS as a standard delivery area and covers roughly 171.6 square miles in Hull, Sioux County, Iowa. The area is home to 3,123 residents, producing a population density of 18 people per square mile, and falls within the Chicago time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 51239 against Iowa and the nation.

On the economic side, the median household income for ZIP 51239 sits at $77,540 (1% above the Iowa average), while per-capita income is $38,148. The poverty rate stands at 5.7% and the unemployment rate at 1.9%. On housing, the median home value is $236,500 (35% above the state average) with median rent at — per month, and 84.0% of occupied units are owner-occupied, a direct signal of whether 51239 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 20.6% of adults hold a bachelor's degree or higher, the median age is 35.2, and the average commute is —. We also surface 4 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Sioux County, so you can benchmark 51239 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →

Top industries in ZIP 51239

Top 5 sectors by establishment count

Which industries have the most business establishments in ZIP 51239.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 51239, Hull, IA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; HUD FMR + FHFA HPI updated quarterly/annually.

Quick Facts

3,123

Population

171.6

Area (sq mi)

18

People / sq mi

Chicago

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 51239?

35.2

Median Age

49.9%

Male

50.1%

Female

5.1%

Foreign-Born

White 87.2%
African American 0.3%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 5.4%
Hispanic or Latino 11.6%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$77,540

Median Household Income

+1% vs state

$38,148

Per Capita Income

5.7%

Poverty Rate

1.9%

Unemployment Rate

How ZIP 51239 ranks nationally

Household income vs. every US ZIP code

Median household income — the full national distribution, with this ZIP marked

$77,540 Top 41% higher than 59% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau — ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 51.9%
Bachelor's Degree or Higher 20.6%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

1,085

Total Housing Units

1,051

Occupied Units

34

Vacant Units

2.68

Avg Household Size

Occupancy Type

Owner 84.0%
Renter 16.0%

$236,500

Median Home Value

+35% vs state

1973

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+23.5%

YoY Change (2024)

286

HPI Index (2000 = 100)

+186%

Total Change Since 2000

Home values in ZIP 51239 have increased 23.5% over the past year (2024). Since 2000, this ZIP has seen +186% cumulative appreciation.

Year Annual Change HPI Index
2020 +4.8% 208
2021 +7.7% 224
2022 +13.9% 255
2023 -9.2% 231
2024 +23.5% 286

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 145 business establishments in ZIP 51239, employing approximately 1,250 people with a combined annual payroll of $63,912,000.

145

Businesses

1,250

Employees

$63.9M

Annual Payroll

13

Industry Sectors

Industry Establishments % of Total
Construction 26 17.9%
Transportation and warehousing 24 16.6%
Other services (except public administration) 19 13.1%
Manufacturing 13 9.0%
Wholesale trade 13 9.0%
Retail trade 13 9.0%
Professional, scientific, and technical services 6 4.1%
Accommodation and food services 6 4.1%
Finance and insurance 5 3.5%
Administrative and support and waste management and remediation services 5 3.5%
Health care and social assistance 5 3.5%
Educational services 4 2.8%
Real estate and rental and leasing 3 2.1%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 51239 vs 51234 →

ZIP 51239 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 51239 ranks #2 by population — useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 51239 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 51239 ranks #3 of 5 neighboring ZIPs — local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
51234 Boyden, IA 1,268 6.4 mi
51235 Doon, IA 1,079 7.4 mi
51250 Sioux Center, IA 8,249 8.8 mi
51237 George, IA 1,703 11.9 mi

More ZIP Codes in Sioux County

51250 standard
Sioux Center, IA
Pop: 8,249
51041 standard
Orange City, IA
Pop: 6,976
51247 standard
Rock Valley, IA
Pop: 4,870
51023 standard
Hawarden, IA
Pop: 3,216
51003 standard
Alton, IA
Pop: 1,700
51234 standard
Boyden, IA
Pop: 1,268

Related Areas

Sioux County Hull, IA Iowa

Frequently Asked Questions

What county is ZIP code 51239 in? ▼
ZIP code 51239 (Hull) is located in Sioux County, Iowa. Sioux County contains multiple ZIP codes, see the full list at /counties/sioux-ia.
What is the population of ZIP code 51239? ▼
ZIP code 51239 in Hull, IA has a population of 3,123 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 51239? ▼
The median household income in ZIP 51239 is $77,540, which is 2% above the national average of $76,288.
What is the average home value in ZIP 51239? ▼
The median home value in ZIP 51239 is $236,500, which is 15% below the national average of $278,155.
What is the demographic makeup of ZIP 51239? ▼
The largest racial group in ZIP 51239 is White at 87.2%. Hispanic or Latino residents make up 11.6% of the population.
How many businesses are in ZIP code 51239? ▼
ZIP code 51239 has 145 business establishments employing approximately 1,250 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 51239? ▼
The top industries by establishment count in ZIP 51239 are: Construction (26), Transportation and warehousing (24), Other services (except public administration) (19). There are 13 industry sectors represented in total.
How have home values changed in ZIP code 51239? ▼
According to the FHFA House Price Index, home values in ZIP 51239 increased by 23.5% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 186%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 51239? ▼
In ZIP code 51239, 51.9% of residents aged 25+ have a high school diploma or higher, and 20.6% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 51239? ▼
In ZIP code 51239, approximately 84.0% of occupied housing units are owner-occupied and 16.0% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 51239? ▼
The poverty rate in ZIP code 51239 is 5.7% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

ZIP Code Research Guides

Reading Census Demographics
How to interpret population, income, and education data from the Census Bureau.
Understanding ZIP Code Data
What ZIP codes are, how ZCTAs differ, and what the data reveals.
Best ZIP Codes for Families
Key factors to evaluate when choosing a family-friendly neighborhood.
ZIP Codes for Relocation
Data-driven tips for evaluating ZIP codes before a move.

Official Data Resources for Hull, IA

Verify and explore additional data for this area using these official government sources.

U.S. Census Bureau
Official demographic, economic, and housing data from the American Community Survey.
HUD Fair Market Rents
Department of Housing and Urban Development rental cost estimates by metropolitan area.
FBI Uniform Crime Reports
Official crime statistics compiled from law enforcement agencies nationwide.
FHFA House Price Index
Federal Housing Finance Agency home value trends based on repeat sales and appraisals.

Read our methodology to see how this data is sourced, computed, and verified.