51357 ZIP Code — Royal, IA

Clay County, Iowa

ZIP code 51357 is located in Royal, Iowa, within Clay County. It covers approximately 37.28 square miles and serves a population of 744 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 712.

About ZIP code 51357

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $87,600. Owner-occupancy sits near the national average at 72%.

Median household income is $60,833. 37% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is production, transportation, and material moving, with manufacturing as the leading industry. The average commute of 22 minutes is near the national average.

College attainment at 20% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 51357 reflects a community defined by a trades-oriented workforce and a significant Social Security-dependent population.

744

population

37.28

sq mi land

Standard

ZIP type

Central (CT)

timezone

51357 ZIP code map

Cities in ZIP code 51357

Below are the cities the US Postal Service accepts for ZIP code 51357. Using any city not on this list may result in mail delivery delays.

City	Status
Royal	Acceptable
Royal	Preferred

Nearby ZIP codes

51301 Spencer (7.9 mi) 51338 Everly (8.2 mi) 51047 Peterson (9.5 mi) 51033 Linn Grove (11 mi) 51058 Sutherland (11.6 mi) 50585 Sioux Rapids (11.7 mi) 51346 Hartley (13.1 mi) 51366 Webb (14.4 mi) 51333 Dickens (15.4 mi) 51245 Primghar (17.4 mi) 51351 Milford (18.2 mi) 50576 Rembrandt (18.3 mi)

Demographics updated 05/2026

Population
Total population	744
Population density	20 / sq mi
State FIPS	19
County FIPS	041

Geography
Land area	37.28 sq mi
Water area	0.00 sq mi
Latitude	43.0615
Longitude	-95.2697
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	43.7%	48.3%	40.1%
$50k – $100k	45.8%	32.6%	33.4%
$100k – $200k	8.7%	16.4%	21.5%
Over $200k	1.9%	2.7%	5.0%

Demographics & statistics

744

Population

People per sq mi

31.7

Median age

$60,833

Median household income

$32,412

Per capita income

$87,600

Median home value

$790

Median monthly rent

72.2%

Home ownership

12.1%

Poverty rate

2.4%

Unemployment

270

Housing units

19.6%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	186	25.0%
18 and over	558	75.0%
65 and over	137	18.4%
Median age	31.7 years

Race & ethnicity

White 98.5%

Black or African American 0.9%

Two or more races 0.4%

Hispanic or Latino 0.1%

Group	Count	%
White	734	98.5%
Black or African American	7	0.9%
Two or more races	3	0.4%
Hispanic or Latino	1	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	43.7%	48.3%	40.1%
$50k – $100k	45.8%	32.6%	33.4%
$100k – $200k	8.7%	16.4%	21.5%
Over $200k	1.9%	2.7%	5.0%

Under $10k 2.9%

$10k–$15k 5.2%

$15k–$25k 5.2%

$25k–$35k 7.5%

$35k–$50k 10.8%

$50k–$75k 31.7%

$75k–$100k 14.7%

$100k–$150k 19.0%

$150k–$200k 0.3%

$200k+ 2.6%

Range	% of households
Under $10k	2.9%
$10k–$15k	5.2%
$15k–$25k	5.2%
$25k–$35k	7.5%
$35k–$50k	10.8%
$50k–$75k	31.7%
$75k–$100k	14.7%
$100k–$150k	19.0%
$150k–$200k	0.3%
$200k+	2.6%
Median income	$60,833

Housing

Home values

Under $50k 15.8%

$50k–$100k 40.3%

$100k–$150k 13.1%

$150k–$200k 8.6%

$200k–$300k 12.2%

$300k–$500k 9.0%

$500k–$1M 0.9%

Housing overview

Metric	Value
Median home value	$87,600
Median rent / month	$790
Owner occupied	72.2%
Renter occupied	27.8%
Vacant	13.8%
Single-family detached	89.3%
Large apartment buildings	0.0%
Mobile homes	0.6%
Median rooms	6.2
Avg household size (owned)	2.24

Year built

Era	%
2020 or later	0.0%
2010–2019	2.5%
2000–2009	5.6%
1990–1999	2.3%
1980–1989	2.0%
1970–1979	7.9%
1960–1969	13.8%
1950–1959	6.5%
1940–1949	9.0%
1939 or earlier	50.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	5.6%
2 bedrooms	22.5%
3 bedrooms	42.8%
4 bedrooms	18.0%
5+ bedrooms	11.0%

Vehicles per household

Vehicles	% of households
No vehicle	2.0%
1 vehicle	17.3%
2 vehicles	47.1%
3 or more	33.7%

Heating fuel

Fuel type	%
Utility gas	63.1%
Electricity	4.9%
Propane / LP gas	31.4%
Wood	0.7%

Households & families

Household type	Count	%
Married-couple family	140	45.8%
Cohabiting couple	40	13.1%
Male householder, no spouse	76	24.8%
Female householder, no spouse	50	16.3%
Households with children under 18	81	26.5%
Households with seniors (65+)	95	31.0%
Average household size	2.43

Marital status

Status	Male	Female
Never married	41.7%	34.0%
Married	44.2%	49.5%
Separated	0.0%	0.0%
Widowed	4.8%	6.2%
Divorced	9.3%	10.3%

Education

Less than 9th grade 0.2%

Some HS, no diploma 3.5%

HS graduate 36.2%

Some college, no degree 18.9%

Associate's degree 21.7%

Bachelor's degree 13.8%

Graduate / professional 5.8%

Metric	%
HS diploma or higher	96.3%
Bachelor's or higher	19.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	7	5.8%
Kindergarten	17	14.0%
Elementary school	36	29.8%
High school	52	43.0%
College / grad school	9	7.4%

Employment

Industry of employment

Manufacturing 30.7%

Education & healthcare 13.9%

Construction 11.9%

Other services 8.4%

Retail trade 7.2%

Agriculture & mining 6.7%

Transportation & utilities 5.9%

Information 5.7%

Arts, food & hospitality 5.2%

Professional & management 2.5%

Wholesale trade 1.0%

Finance & real estate 0.7%

Public administration 0.2%

Occupation

Category	%
Management, business & arts	24.8%
Service	13.6%
Sales & office	17.6%
Natural resources & construction	11.1%
Production & transportation	32.9%

Employment type

Type	%
Private sector	81.4%
Government	5.4%
Self-employed	12.9%
Unpaid family workers	0.2%

Commute

Method	%
Drive alone	69.3%
Carpool	19.3%
Public transit	0.0%
Walk	4.8%
Work from home	5.6%
Other means	1.0%
Avg commute (minutes)	21.5

Poverty

All people 12.1%

Under 18 years 22.6%

18 and over 8.6%

Married-couple families 3.6%

Female-led households 14.8%

Income support

Source	% of households
Social Security	37.3%
Retirement income	21.2%
Supplemental Security	0.0%
Cash public assistance	5.6%
Food stamps / SNAP	10.8%

Health indicators

Condition	%
Obesity	40.2%
High blood pressure	31.7%
High cholesterol	33.1%
Diabetes	9.6%
Heart disease	6.3%
Stroke	2.9%
Asthma	9.5%
Arthritis	24.7%
Kidney disease	2.7%
Pulmonary disease	6.8%
Cancer	6.7%

Behavior / access	%
Smoking	18.1%
Binge drinking	22.9%
No physical activity	24.2%
Less than 7 hrs sleep	32.0%
Depression	18.7%
Fair or poor health	12.9%
Poor mental health	14.1%
Poor physical health	9.7%
No health insurance	10.0%
Visited doctor (checkup)	73.4%
Visited dentist	64.8%
Cholesterol screening	87.5%
Teeth loss	13.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	59	10.6%

Disability	%
Any disability	12.5%
Under 18	2.2%
18–64 years	11.4%
65 and over	29.9%

Health insurance coverage

Type	%
Private insurance	71.0%
Public insurance	37.5%
No insurance	5.2%
Uninsured under 19	9.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	671	90.2%
Spanish	1	0.1%
Other Indo-European	1	0.1%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	743	99.9%
Born in same state	738	99.2%
Born in different state	537	72.2%
Foreign born	5	0.7%
Naturalized citizen	1	0.1%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
French	59	7.9%
Dutch	50	6.7%
Italian	46	6.2%

Ancestry	Count	%
Arab	30	4%
Polish	28	3.8%
English	13	1.7%

Technology access

Metric	% of households
Computer access	41.1%
Internet access	90.8%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 51357

What city is ZIP code 51357 in?

ZIP code 51357 is primarily assigned to Royal, Iowa.

What county is ZIP code 51357 in?

ZIP code 51357 falls within Clay County, Iowa.

Does ZIP code 51357 have a large retiree population?

37% of households in ZIP code 51357 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 51357 have a large veteran population?

11% of civilians in ZIP code 51357 are veterans, above the national average of ~7%.

What is the typical home value in ZIP code 51357?

The median home value in ZIP code 51357 is $87,600.

What is the population of ZIP code 51357?

ZIP code 51357 has an estimated population of 744 residents, with a density of 20 people per square mile.

What timezone is ZIP code 51357 in?

ZIP code 51357 observes the CST timezone.