ZIP Code Tabulation Area · Iowa

ZIP Code 51239: Sioux County, IA

ZIP Code 51239 (Sioux County, Iowa) has an estimated 2,876 residents in 1,051 households. The median household income is $77,540, the median home value is $236,500 and the median gross rent is —. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated Oct 26, 2026

Some estimates have a large margin of error. One figure for this ZIP (owner-occupied) is marked with *. ACS figures come from a sample, and small areas have fewer responses, so treat these numbers as rough ranges.

Total population

2,876

Margin of error ±365

Median household income

$77,540

Margin of error ±$20,163

Median home value

$236,500

Margin of error ±$14,004

Median gross rent

—

Margin of error not available

Median age

35.2 yrs

Margin of error ±3.8 yrs

Mean travel time to work

13.8 min

Margin of error ±3.7 min

How ZIP 51239 compares with Iowa and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 5123935.2 yrsIowa38.6 yrsUnited States38.9 yrs

Median household income

ZIP 51239$77,540Iowa$75,059United States$80,734

Per capita income

ZIP 51239$38,148Iowa$40,877United States$44,673

Poverty rate

ZIP 512395.7%Iowa11.1%United States12.5%

Unemployment rate

ZIP 512391.9%Iowa3.6%United States5.2%

Bachelor's degree or higher

ZIP 5123920.6%Iowa31.4%United States35.7%

Median home value

ZIP 51239$236,500Iowa$208,000United States$332,700

Median gross rent

ZIP 51239—Iowa$972/moUnited States$1,413/mo

Owner-occupied homes

ZIP 5123984.0%*Iowa71.7%United States65.2%

Mean travel time to work

ZIP 5123913.8 minIowa19.8 minUnited States26.4 min

Worked from home

ZIP 512397.4%Iowa11.3%United States15.1%

All figures for ZIP 51239

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 51239 — ACS 2020–2024 5-year estimates
Measure	ZIP 51239	Margin of error	Iowa	United States
Total population	2,876	±365	3,210,507	334,922,499
Median age	35.2 yrs	±3.8 yrs	38.6 yrs	38.9 yrs
Households	1,051	±152	1,315,707	129,227,496
Median household income	$77,540	±$20,163	$75,059	$80,734
Per capita income	$38,148	±$6,705	$40,877	$44,673
Poverty rate	5.7%	±3.7 pts	11.1%	12.5%
Unemployment rate	1.9%	±1.7 pts	3.6%	5.2%
Bachelor's degree or higher	20.6%	±4.2 pts	31.4%	35.7%
Median home value	$236,500	±$14,004	$208,000	$332,700
Median gross rent	—	—	$972/mo	$1,413/mo
Owner-occupied homes	84.0%*	±16.4 pts	71.7%	65.2%
Mean travel time to work	13.8 min	±3.7 min	19.8 min	26.4 min
Worked from home	7.4%	±3.6 pts	11.3%	15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 51239
Group	ZIP 51239	Iowa	United States
White alone, not Hispanic or Latino	87.2%	82.3%	57.4%
Black or African American alone, not Hispanic or Latino	0.3%	3.8%	11.9%
American Indian and Alaska Native alone, not Hispanic or Latino	0.0%	0.2%	0.5%
Asian alone, not Hispanic or Latino	0.0%	2.5%	5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino	0.0%	0.2%	0.2%
Some other race alone, not Hispanic or Latino	0.1%	0.3%	0.6%
Two or more races, not Hispanic or Latino	0.6%	3.5%	4.3%
Hispanic or Latino (of any race)	11.6%	7.3%	19.3%

Where ZIP 51239 is

State: Iowa
Main county: Sioux County— also overlaps Lyon County
Largest overlapping place: Hull (2% of the ZIP's land area)
Land area: 67.00 sq mi· about 43 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Sioux County

51003 Sioux County, IA 51011 Chatsworth, IA 51023 Sioux County, IA 51027 Sioux County, IA 51036 Sioux County, IA 51041 Sioux County, IA 51201 Sioux County, IA 51234 Sioux County, IA 51238 Sioux County, IA 51244 Matlock, IA 51247 Sioux County, IA 51250 Sioux County, IA

See every ZIP code in Iowa, or compare ZIP 51239 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.