Rockwell City ZIP Codes — Calhoun County, IA

There is one unique ZIP code in Rockwell City, Iowa and it is 50579. Area code: 712.

ZIP codes

140.59

sq mi land

1.29

sq mi water

712

area code

Rockwell City, IA ZIP code map

About Rockwell City, IA

Rockwell City is a charming city located in the heart of Iowa, specifically in Calhoun County. With its small-town atmosphere and welcoming community, it offers a peaceful environment ideal for families and individuals alike. Visitors and residents enjoy the blend of rural lifestyle with access to modern amenities, making it a delightful place to live or visit.

Location & geography

Rockwell City covers a total area of 140.59 square miles, with a small portion of 1.29 square miles designated as water. The city is situated in the central part of Iowa, surrounded by picturesque landscapes and farmlands. Nearby cities include Fort Dodge, located approximately 30 miles to the east, and Sac City, about 12 miles to the south.

Community & economy

The community of Rockwell City is characterized by a strong sense of unity and warmth, where locals regularly participate in events and support one another. Agriculture plays a significant role in the local economy, alongside industries such as manufacturing and retail. Daily life in the city is marked by community gatherings, school activities, and the celebration of local traditions.

Transportation

Rockwell City is conveniently accessible via U.S. Highway 4, which runs north-south and connects to other major roads. The nearest named airport is Fort Dodge Regional Airport, located about 30 miles away, providing regional flights for residents and visitors. Public transportation options are limited, encouraging the use of personal vehicles for commuting.

History

Rockwell City was founded in the late 19th century and has grown from a small settlement into a thriving community over the years. Historically, agriculture has been a cornerstone of the local economy, with farming activities shaping much of the city's development. Notable events include the annual Calhoun County Fair, which celebrates local culture and agriculture.

Did you know?

A little-known fact about Rockwell City is that it is home to the only remaining operating grain elevator in Calhoun County. This facility not only serves the local farming community but also stands as a historical landmark reminding residents of the city's agricultural roots.

ZIP codes for Rockwell City, IA (1)

ZIP code	City	County	Map
50579	Rockwell City	Calhoun	View map

Demographics & statistics

3,153

Population

38.9

Median age

$63,893

Median household income

$28,092

Per capita income

$115,200

Median home value

$728

Median monthly rent

76.1%

Home ownership

10.1%

Poverty rate

1.9%

Unemployment

1,059

Housing units

20.3%

Bachelor's or higher

Age distribution

Male Female

Under 5

134

5–9

114

10–14

104

15–19

107

20–24

274

25–34

201

279

35–44

204

216

45–54

158

114

55–59

103

60–64

157

65–74

114

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	661	21.0%
18 and over	2,492	79.0%
65 and over	557	17.7%
Median age	38.9 years

Race & ethnicity

White 88.3%

Two or more races 4.7%

Hispanic or Latino 3.1%

Black or African American 2%

Other race 1.3%

Asian 0.6%

Group	Count	%
White	2,873	88.3%
Two or more races	154	4.7%
Hispanic or Latino	101	3.1%
Black or African American	65	2%
Other race	42	1.3%
Asian	19	0.6%

Household income

Under $10k 6.0%

$10k–$15k 5.1%

$15k–$25k 12.0%

$25k–$35k 11.7%

$35k–$50k 8.3%

$50k–$75k 18.1%

$75k–$100k 11.2%

$100k–$150k 15.4%

$150k–$200k 5.6%

$200k+ 6.6%

Range	% of households
Under $10k	6.0%
$10k–$15k	5.1%
$15k–$25k	12.0%
$25k–$35k	11.7%
$35k–$50k	8.3%
$50k–$75k	18.1%
$75k–$100k	11.2%
$100k–$150k	15.4%
$150k–$200k	5.6%
$200k+	6.6%
Median income	$63,893

Housing

Home values

Under $50k 15.9%

$50k–$100k 28.7%

$100k–$150k 12.9%

$150k–$200k 11.3%

$200k–$300k 14.1%

$300k–$500k 9.1%

$500k–$1M 7.9%

Housing overview

Metric	Value
Median home value	$115,200
Median rent / month	$728
Owner occupied	76.1%
Renter occupied	23.9%
Vacant	21.4%
Single-family detached	83.7%
Large apartment buildings	5.3%
Mobile homes	0.2%
Median rooms	6.5
Avg household size (owned)	2.49

Year built

Era	%
2020 or later	0.0%
2010–2019	1.3%
2000–2009	2.6%
1990–1999	2.2%
1980–1989	7.6%
1970–1979	14.6%
1960–1969	18.5%
1950–1959	17.5%
1940–1949	7.7%
1939 or earlier	27.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.9%
1 bedroom	7.4%
2 bedrooms	19.6%
3 bedrooms	40.0%
4 bedrooms	24.9%
5+ bedrooms	7.1%

Vehicles per household

Vehicles	% of households
No vehicle	4.0%
1 vehicle	28.8%
2 vehicles	34.2%
3 or more	33.0%

Heating fuel

Fuel type	%
Utility gas	57.3%
Electricity	29.9%
Propane / LP gas	10.0%
Wood	1.2%
No fuel used	1.4%

Households & families

Household type	Count	%
Married-couple family	541	52.8%
Cohabiting couple	37	3.6%
Male householder, no spouse	135	13.2%
Female householder, no spouse	312	30.4%
Households with children under 18	310	30.2%
Households with seniors (65+)	403	39.3%
Average household size	2.52

Marital status

Status	Male	Female
Never married	39.4%	18.8%
Married	39.7%	50.2%
Separated	5.2%	2.7%
Widowed	3.0%	14.6%
Divorced	12.7%	13.7%

Education

Less than 9th grade 1.6%

Some HS, no diploma 6.9%

HS graduate 38.3%

Some college, no degree 22.0%

Associate's degree 11.0%

Bachelor's degree 14.0%

Graduate / professional 6.2%

Metric	%
HS diploma or higher	91.5%
Bachelor's or higher	20.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	44	5.5%
Kindergarten	22	2.8%
Elementary school	324	40.7%
High school	192	24.1%
College / grad school	215	27.0%

Employment

Industry of employment

Education & healthcare 36.1%

Retail trade 15.1%

Agriculture & mining 8.3%

Public administration 7.0%

Other services 5.4%

Transportation & utilities 5.3%

Manufacturing 5.0%

Construction 4.0%

Professional & management 3.3%

Wholesale trade 3.0%

Arts, food & hospitality 3.0%

Finance & real estate 2.5%

Information 1.8%

Occupation

Category	%
Management, business & arts	40.7%
Service	22.8%
Sales & office	13.2%
Natural resources & construction	11.1%
Production & transportation	12.3%

Employment type

Type	%
Private sector	67.1%
Government	19.4%
Self-employed	13.0%
Unpaid family workers	0.4%

Commute

Method	%
Drive alone	76.9%
Carpool	17.2%
Public transit	0.0%
Walk	0.6%
Other means	4.0%
Avg commute (minutes)	22.6

Poverty

All people 10.1%

Under 18 years 8.2%

18 and over 10.7%

Married-couple families 2.4%

Female-led households 24.8%

Income support

Source	% of households
Social Security	42.5%
Retirement income	22.5%
Supplemental Security	5.5%
Cash public assistance	3.0%
Food stamps / SNAP	10.3%

Health indicators

Condition	%
High blood pressure	39.1%
High cholesterol	37.1%
Heart disease	8.6%
Stroke	3.9%
Asthma	9.3%
Arthritis	30.6%
Kidney disease	3.6%
Pulmonary disease	8.4%
Cancer	9.0%

Behavior / access	%
Binge drinking	18.3%
No physical activity	26.6%
Less than 7 hrs sleep	29.5%
Fair or poor health	14.9%
Poor mental health	12.8%
Poor physical health	11.0%
No health insurance	9.0%
Visited doctor (checkup)	77.8%
Visited dentist	64.5%
Cholesterol screening	90.4%
Teeth loss	14.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	161	6.5%

Disability	%
Any disability	14.2%
Under 18	5.1%
18–64 years	13.2%
65 and over	28.2%

Health insurance coverage

Type	%
Private insurance	65.2%
Public insurance	49.1%
Uninsured under 19	1.2%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,059	97.0%
Spanish	28	0.9%
Other Indo-European	23	0.8%
Asian & Pacific Islander	0	0.0%
Other languages	5	0.2%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,115	98.8%
Born in same state	3,112	98.7%
Born in different state	2,435	77.2%
Foreign born	3	0.1%
Naturalized citizen	38	1.2%
Not a US citizen	30	78.9%

Ancestry

Ancestry	Count	%
Italian	425	13.5%
French	216	6.9%
Arab	130	4.1%

Ancestry	Count	%
English	66	2.1%
Polish	48	1.5%
Dutch	28	0.9%

Technology access

Metric	% of households
Computer access	32.5%
Internet access	91.6%

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

Frequently asked questions

What ZIP codes does Rockwell City, IA have?

Rockwell City, IA has one ZIP code: 50579. Each ZIP code serves a distinct delivery area within the city and surrounding region.