51247 ZIP Code — Rock Valley, IA

Sioux County, Iowa

ZIP code 51247 is located in Rock Valley, Iowa, within Sioux County. It covers approximately 112.60 square miles and serves a population of 4,887 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 712.

About ZIP code 51247

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $210,700. Owner-occupancy is high at 76%, well above the national average.

Median household income is $65,403. The poverty rate of 6% is below the national average. 34% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is sales and office, with manufacturing as the leading industry. The average commute of 13 minutes is near the national average.

College attainment at 19% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 51247 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.

4,887

population

112.60

sq mi land

Standard

ZIP type

Central (CT)

timezone

51247 ZIP code map

Cities in ZIP code 51247

Below are the cities the US Postal Service accepts for ZIP code 51247. Using any city not on this list may result in mail delivery delays.

City	Status
Rock Valley	Acceptable
Rock Valley	Preferred

Nearby ZIP codes

57027 Fairview (7.9 mi) 51250 Sioux Center (9.6 mi) 51235 Doon (10 mi) 51239 Hull (10.5 mi) 51240 Inwood (10.6 mi) 57034 Hudson (11 mi) 51023 Hawarden (11.5 mi) 51230 Alvord (12.2 mi) 51027 Ireton (14.1 mi) 57013 Canton (15.9 mi) 51036 Maurice (16.1 mi) 51234 Boyden (16.8 mi)

Demographics updated 05/2026

Population
Total population	4,887
Population density	43 / sq mi
State FIPS	19
County FIPS	167

Geography
Land area	112.60 sq mi
Water area	0.08 sq mi
Latitude	43.1781
Longitude	-96.3529
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	28.2%	30.7%	40.1%
$50k – $100k	45.4%	42.1%	33.4%
$100k – $200k	20.3%	22.2%	21.5%
Over $200k	6.1%	5.0%	5.0%

Demographics & statistics

4,887

Population

People per sq mi

38.7

Median age

$65,403

Median household income

$33,793

Per capita income

$210,700

Median home value

$892

Median monthly rent

76.0%

Home ownership

6.1%

Poverty rate

0.7%

Unemployment

1,423

Housing units

19.4%

Bachelor's or higher

Age distribution

Male Female

130

Under 5

133

204

5–9

209

157

10–14

161

165

15–19

169

303

20–24

309

158

25–34

162

371

35–44

379

267

45–54

273

55–59

113

60–64

116

234

65–74

240

153

75–84

157

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,200	24.6%
18 and over	3,687	75.4%
65 and over	920	18.8%
Median age	38.7 years

Race & ethnicity

White 74.3%

Hispanic or Latino 11.7%

Two or more races 11.3%

Other race 2.6%

Native Hawaiian / Pacific Islander 0.1%

Group	Count	%
White	4,114	74.3%
Hispanic or Latino	649	11.7%
Two or more races	623	11.3%
Other race	143	2.6%
Native Hawaiian / Pacific Islander	6	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	28.2%	30.7%	40.1%
$50k – $100k	45.4%	42.1%	33.4%
$100k – $200k	20.3%	22.2%	21.5%
Over $200k	6.1%	5.0%	5.0%

Under $10k 4.9%

$10k–$15k 3.1%

$15k–$25k 11.7%

$25k–$35k 3.7%

$35k–$50k 10.4%

$50k–$75k 19.9%

$75k–$100k 12.7%

$100k–$150k 18.1%

$150k–$200k 9.6%

$200k+ 5.9%

Range	% of households
Under $10k	4.9%
$10k–$15k	3.1%
$15k–$25k	11.7%
$25k–$35k	3.7%
$35k–$50k	10.4%
$50k–$75k	19.9%
$75k–$100k	12.7%
$100k–$150k	18.1%
$150k–$200k	9.6%
$200k+	5.9%
Median income	$65,403

Housing

Home values

Under $50k 6.3%

$50k–$100k 5.0%

$100k–$150k 17.6%

$150k–$200k 16.7%

$200k–$300k 32.2%

$300k–$500k 14.4%

$500k–$1M 4.9%

$1M+ 2.9%

Housing overview

Metric	Value
Median home value	$210,700
Median rent / month	$892
Owner occupied	76.0%
Renter occupied	24.0%
Vacant	0.8%
Single-family detached	77.3%
Large apartment buildings	3.6%
Mobile homes	2.5%
Median rooms	6.3
Avg household size (owned)	2.65

Year built

Era	%
2020 or later	0.0%
2010–2019	7.6%
2000–2009	9.2%
1990–1999	19.9%
1980–1989	4.7%
1970–1979	8.8%
1960–1969	18.4%
1950–1959	9.7%
1940–1949	2.6%
1939 or earlier	19.1%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	13.7%
2 bedrooms	23.4%
3 bedrooms	27.9%
4 bedrooms	28.5%
5+ bedrooms	6.6%

Vehicles per household

Vehicles	% of households
No vehicle	7.1%
1 vehicle	23.6%
2 vehicles	41.7%
3 or more	27.6%

Heating fuel

Fuel type	%
Utility gas	46.3%
Electricity	45.8%
Propane / LP gas	5.7%
Fuel oil	1.7%

Households & families

Household type	Count	%
Married-couple family	1,045	56.4%
Cohabiting couple	93	5.0%
Male householder, no spouse	312	16.8%
Female householder, no spouse	402	21.7%
Households with children under 18	585	31.6%
Households with seniors (65+)	642	34.7%
Average household size	2.58

Marital status

Status	Male	Female
Never married	36.4%	25.5%
Married	56.1%	53.5%
Separated	0.1%	0.7%
Widowed	3.2%	13.4%
Divorced	4.3%	7.0%

Education

Less than 9th grade 5.4%

Some HS, no diploma 5.0%

HS graduate 43.2%

Some college, no degree 18.8%

Associate's degree 8.2%

Bachelor's degree 14.6%

Graduate / professional 4.9%

Metric	%
HS diploma or higher	89.6%
Bachelor's or higher	19.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	58	4.1%
Kindergarten	58	4.1%
Elementary school	585	41.8%
High school	337	24.1%
College / grad school	360	25.8%

Employment

Industry of employment

Manufacturing 22.8%

Education & healthcare 18.4%

Construction 13.2%

Retail trade 11.8%

Wholesale trade 7.6%

Other services 6.5%

Agriculture & mining 6.2%

Finance & real estate 5.2%

Transportation & utilities 2.6%

Professional & management 2.3%

Arts, food & hospitality 2.0%

Information 0.9%

Public administration 0.4%

Occupation

Category	%
Management, business & arts	26.0%
Service	11.2%
Sales & office	26.4%
Natural resources & construction	19.7%
Production & transportation	16.6%

Employment type

Type	%
Private sector	77.9%
Government	7.8%
Self-employed	14.3%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	72.2%
Carpool	10.2%
Public transit	0.8%
Walk	3.6%
Work from home	9.8%
Other means	3.3%
Avg commute (minutes)	12.9

Poverty

All people 6.1%

Under 18 years 3.8%

18 and over 6.8%

Married-couple families 1.2%

Female-led households 21.8%

Income support

Source	% of households
Social Security	34.3%
Retirement income	12.6%
Supplemental Security	6.2%
Cash public assistance	1.1%
Food stamps / SNAP	6.9%

Health indicators

Condition	%
Obesity	35.6%
High blood pressure	32.7%
High cholesterol	32.3%
Diabetes	9.4%
Heart disease	6.4%
Stroke	3.0%
Asthma	8.9%
Arthritis	24.1%
Kidney disease	2.9%
Pulmonary disease	6.4%
Cancer	7.1%

Behavior / access	%
Smoking	16.3%
Binge drinking	19.6%
No physical activity	24.9%
Less than 7 hrs sleep	28.4%
Depression	16.0%
Fair or poor health	12.3%
Poor mental health	12.9%
Poor physical health	9.1%
No health insurance	11.3%
Visited doctor (checkup)	74.8%
Visited dentist	67.9%
Cholesterol screening	87.4%
Teeth loss	14.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	76	2.1%

Disability	%
Any disability	13.9%
Under 18	1.6%
18–64 years	8.7%
65 and over	47.7%

Health insurance coverage

Type	%
Private insurance	67.4%
Public insurance	35.1%
No insurance	11.8%
Uninsured under 19	23.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	4,624	94.6%
Spanish	201	4.3%
Other Indo-European	201	4.3%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	4,598	94.1%
Born in same state	4,566	93.4%
Born in different state	3,238	66.3%
Foreign born	32	0.7%
Naturalized citizen	289	5.9%
Not a US citizen	32	11.1%

Ancestry

Ancestry	Count	%
English	2,203	45.1%
Arab	429	8.8%
French	263	5.4%

Ancestry	Count	%
Italian	237	4.8%
Polish	41	0.8%
Dutch	18	0.4%

Technology access

Metric	% of households
Computer access	37.9%
Internet access	89.0%

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

Frequently asked questions about ZIP code 51247

What city is ZIP code 51247 in?

ZIP code 51247 is primarily assigned to Rock Valley, Iowa.

What county is ZIP code 51247 in?

ZIP code 51247 falls within Sioux County, Iowa.

What is the population of ZIP code 51247?

ZIP code 51247 has an estimated population of 4,887 residents, with a density of 43 people per square mile.

What is the typical home value in ZIP code 51247?

The median home value in ZIP code 51247 is $210,700.

What is the median household income in ZIP code 51247?

The median household income in ZIP code 51247 is $65,403, below the national median of ~$75,000.

What timezone is ZIP code 51247 in?

ZIP code 51247 observes the CST timezone.