ZIP Code Tabulation Area · Iowa

ZIP Code 51338: Clay County, IA

ZIP Code 51338 (Clay County, Iowa) has an estimated 852 residents in 382 households. The median household income is $57,500, the median home value is $125,200 and the median gross rent is $713/mo. 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

Total population

852

Margin of error ±161

Median household income

$57,500

Margin of error ±$19,411

Median home value

$125,200

Margin of error ±$12,360

Median gross rent

$713/mo

Margin of error ±$171

Median age

43.8 yrs

Margin of error ±5.3 yrs

Mean travel time to work

23.1 min

Margin of error ±7.5 min

How ZIP 51338 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 5133843.8 yrsIowa38.6 yrsUnited States38.9 yrs

Median household income

ZIP 51338$57,500Iowa$75,059United States$80,734

Per capita income

ZIP 51338$35,552Iowa$40,877United States$44,673

Poverty rate

ZIP 513384.9%Iowa11.1%United States12.5%

Unemployment rate

ZIP 513380.4%Iowa3.6%United States5.2%

Bachelor's degree or higher

ZIP 5133823.5%Iowa31.4%United States35.7%

Median home value

ZIP 51338$125,200Iowa$208,000United States$332,700

Median gross rent

ZIP 51338$713/moIowa$972/moUnited States$1,413/mo

Owner-occupied homes

ZIP 5133884.0%Iowa71.7%United States65.2%

Mean travel time to work

ZIP 5133823.1 minIowa19.8 minUnited States26.4 min

Worked from home

ZIP 513385.1%Iowa11.3%United States15.1%

All figures for ZIP 51338

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 51338 — ACS 2020–2024 5-year estimates
Measure	ZIP 51338	Margin of error	Iowa	United States
Total population	852	±161	3,210,507	334,922,499
Median age	43.8 yrs	±5.3 yrs	38.6 yrs	38.9 yrs
Households	382	±62	1,315,707	129,227,496
Median household income	$57,500	±$19,411	$75,059	$80,734
Per capita income	$35,552	±$4,426	$40,877	$44,673
Poverty rate	4.9%	±1.8 pts	11.1%	12.5%
Unemployment rate	0.4%	±0.7 pts	3.6%	5.2%
Bachelor's degree or higher	23.5%	±6.8 pts	31.4%	35.7%
Median home value	$125,200	±$12,360	$208,000	$332,700
Median gross rent	$713/mo	±$171	$972/mo	$1,413/mo
Owner-occupied homes	84.0%	±6.7 pts	71.7%	65.2%
Mean travel time to work	23.1 min	±7.5 min	19.8 min	26.4 min
Worked from home	5.1%	±3.2 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 51338
Group	ZIP 51338	Iowa	United States
White alone, not Hispanic or Latino	91.4%	82.3%	57.4%
Black or African American alone, not Hispanic or Latino	0.0%	3.8%	11.9%
American Indian and Alaska Native alone, not Hispanic or Latino	0.2%	0.2%	0.5%
Asian alone, not Hispanic or Latino	2.5%	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	0.0%	0.3%	0.6%
Two or more races, not Hispanic or Latino	5.6%	3.5%	4.3%
Hispanic or Latino (of any race)	0.2%	7.3%	19.3%

Where ZIP 51338 is

State: Iowa
Main county: Clay County— also overlaps Dickinson County
Largest overlapping place: Everly (1% of the ZIP's land area)
Land area: 72.38 sq mi· about 12 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 Clay County

51033 Clay County, IA 51047 Clay County, IA 51301 Clay County, IA 51333 Clay County, IA 51340 Fostoria, IA 51341 Gillett Grove, IA 51343 Clay County, IA 51357 Clay County, IA 51366 Clay County, IA

See every ZIP code in Iowa, or compare ZIP 51338 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.