50670 ZIP Code — Shell Rock, IA

Butler County, Iowa

ZIP code 50670 is located in Shell Rock, Iowa, within Butler County. It covers approximately 55.10 square miles and serves a population of 2,378 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 319.

About ZIP code 50670

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 $172,800. Owner-occupancy is high at 88%, well above the national average.

Median household income is $77,054. The poverty rate of 6% is below the national average. 38% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 22 minutes is near the national average.

Educational attainment is near the national average, with 22% of residents holding a bachelor's degree or higher.

Overall, ZIP code 50670 reflects a community defined by high homeownership and a significant Social Security-dependent population.

2,378
population
55.10
sq mi land
Standard
ZIP type
Central (CT)
timezone
50670 ZIP code map
Cities in ZIP code 50670

Below are the cities the US Postal Service accepts for ZIP code 50670. Using any city not on this list may result in mail delivery delays.

City Status
Shell Rock Preferred
Nearby ZIP codes
50660 New Hartford (6.8 mi) 50619 Clarksville (7.9 mi) 50647 Janesville (8 mi) 50602 Allison (9.1 mi) 50665 Parkersburg (10.2 mi) 50677 Waverly (12.1 mi) 50666 Plainfield (13.1 mi) 50613 Cedar Falls (13.4 mi) 50614 Cedar Falls (14.5 mi) 50622 Denver (14.8 mi) 50604 Aplington (14.9 mi) 50624 Dike (15.5 mi)
Demographics updated 05/2026
Population
Total population 2,378
Population density 43 / sq mi
State FIPS 19
County FIPS 023
Geography
Land area 55.10 sq mi
Water area 0.53 sq mi
Latitude 42.6839
Longitude -92.6259
Timezone Central (CT)
Area code 319
Total population by age
Gender
Race & ethnicity
Economics updated 05/2026
Household income
Income range This ZIP County avg State avg
Under $50k 37.3% 42.3% 40.1%
$50k – $100k 39.9% 37.1% 33.4%
$100k – $200k 18.1% 18.1% 21.5%
Over $200k 4.7% 2.5% 5.0%

Demographics & statistics

2,378
Population
43
People per sq mi
42.8
Median age
$77,054
Median household income
$39,665
Per capita income
$172,800
Median home value
$617
Median monthly rent
88.2%
Home ownership
6.0%
Poverty rate
2.7%
Unemployment
822
Housing units
22.2%
Bachelor's or higher

Age distribution

Male Female
72
Under 5
79
61
5–9
66
102
10–14
110
64
15–19
70
52
20–24
57
133
25–34
144
112
35–44
122
136
45–54
148
68
55–59
73
78
60–64
85
151
65–74
164
80
75–84
87
31
85+
33
← Male
Female →

Age summary

GroupCount%
Under 1858124.4%
18 and over1,79775.6%
65 and over54623.0%
Median age42.8 years

Race & ethnicity

White 97.8%
Black or African American 1.1%
Two or more races 0.8%
Asian 0.3%
GroupCount%
White2,32697.8%
Black or African American271.1%
Two or more races180.8%
Asian70.3%

Household income

Income range This ZIP County avg State avg
Under $50k 37.3% 42.3% 40.1%
$50k – $100k 39.9% 37.1% 33.4%
$100k – $200k 18.1% 18.1% 21.5%
Over $200k 4.7% 2.5% 5.0%
Under $10k 3.4%
$10k–$15k 3.1%
$15k–$25k 3.1%
$25k–$35k 6.4%
$35k–$50k 9.5%
$50k–$75k 22.0%
$75k–$100k 21.6%
$100k–$150k 18.7%
$150k–$200k 5.0%
$200k+ 7.3%
Range% of households
Under $10k3.4%
$10k–$15k3.1%
$15k–$25k3.1%
$25k–$35k6.4%
$35k–$50k9.5%
$50k–$75k22.0%
$75k–$100k21.6%
$100k–$150k18.7%
$150k–$200k5.0%
$200k+7.3%
Median income$77,054

Housing

Home values

Under $50k 3.9%
$50k–$100k 11.9%
$100k–$150k 24.7%
$150k–$200k 15.2%
$200k–$300k 20.5%
$300k–$500k 20.3%
$500k–$1M 3.1%
$1M+ 0.4%

Housing overview

MetricValue
Median home value$172,800
Median rent / month$617
Owner occupied88.2%
Renter occupied11.8%
Vacant5.2%
Single-family detached89.4%
Large apartment buildings1.3%
Mobile homes1.9%
Median rooms6.1
Avg household size (owned)2.78

Year built

Era%
2020 or later0.0%
2010–20193.9%
2000–20097.5%
1990–199910.4%
1980–19896.2%
1970–197912.9%
1960–19698.6%
1950–195910.0%
1940–194910.8%
1939 or earlier29.8%

Bedrooms

Size% of units
No bedroom (studio)0.2%
1 bedroom7.1%
2 bedrooms27.5%
3 bedrooms41.8%
4 bedrooms17.8%
5+ bedrooms5.5%

Vehicles per household

Vehicles% of households
No vehicle1.8%
1 vehicle20.7%
2 vehicles33.3%
3 or more44.2%

Heating fuel

Fuel type%
Utility gas49.8%
Electricity27.6%
Propane / LP gas21.2%
Wood1.5%

Households & families

Household typeCount%
Married-couple family58066.1%
Cohabiting couple455.1%
Male householder, no spouse9711.0%
Female householder, no spouse15617.8%
Households with children under 1831736.1%
Households with seniors (65+)32136.6%
Average household size2.66

Marital status

StatusMaleFemale
Never married19.6%19.7%
Married69.7%61.7%
Separated0.3%0.2%
Widowed1.1%12.6%
Divorced9.3%5.8%

Education

Less than 9th grade 1.0%
Some HS, no diploma 3.2%
HS graduate 32.8%
Some college, no degree 21.8%
Associate's degree 19.0%
Bachelor's degree 13.8%
Graduate / professional 8.4%
Metric%
HS diploma or higher95.7%
Bachelor's or higher22.2%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool295.7%
Kindergarten326.3%
Elementary school27052.9%
High school13526.5%
College / grad school448.6%

Employment

Industry of employment

Education & healthcare 19.7%
Manufacturing 18.4%
Retail trade 10.2%
Arts, food & hospitality 9.8%
Transportation & utilities 7.6%
Other services 7.0%
Finance & real estate 6.5%
Public administration 5.0%
Wholesale trade 4.5%
Construction 3.8%
Professional & management 3.5%
Agriculture & mining 2.2%
Information 1.8%

Occupation

Category%
Management, business & arts29.4%
Service14.3%
Sales & office22.1%
Natural resources & construction9.0%
Production & transportation25.2%

Employment type

Type%
Private sector68.8%
Government17.3%
Self-employed13.8%
Unpaid family workers0.0%

Commute

Method%
Drive alone88.0%
Carpool4.5%
Public transit0.0%
Walk1.6%
Work from home5.8%
Other means0.1%
Avg commute (minutes)22.0

Poverty

All people 6.0%
Under 18 years 3.5%
18 and over 6.8%
Married-couple families 2.8%
Female-led households 5.3%

Income support

Source% of households
Social Security38.0%
Retirement income30.2%
Supplemental Security1.9%
Cash public assistance2.7%
Food stamps / SNAP4.2%

Health indicators

Condition%
Obesity35.3%
High blood pressure35.1%
High cholesterol33.8%
Diabetes10.3%
Heart disease7.2%
Stroke3.2%
Asthma9.1%
Arthritis26.9%
Kidney disease3.0%
Pulmonary disease7.1%
Cancer7.7%
Behavior / access%
Smoking16.8%
Binge drinking21.5%
No physical activity23.3%
Less than 7 hrs sleep30.0%
Depression17.1%
Fair or poor health12.7%
Poor mental health12.9%
Poor physical health9.8%
No health insurance8.7%
Visited doctor (checkup)74.2%
Visited dentist69.7%
Cholesterol screening89.6%
Teeth loss12.5%

Veterans & disability

VeteransCount%
Civilian veterans1639.1%
Disability%
Any disability11.8%
Under 187.1%
18–64 years6.4%
65 and over30.5%

Health insurance coverage

Type%
Private insurance80.2%
Public insurance36.4%
No insurance4.7%
Uninsured under 194.3%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only2,22793.7%
Spanish70.3%
Other Indo-European00.0%
Asian & Pacific Islander00.0%
Other languages70.3%

Place of birth & citizenship

OriginCount%
Native born (US)2,35999.2%
Born in same state2,35398.9%
Born in different state2,01284.6%
Foreign born60.3%
Naturalized citizen190.8%
Not a US citizen19100.0%

Ancestry

AncestryCount%
Italian29212.3%
French1757.4%
Arab984.1%
Polish512.1%
AncestryCount%
English461.9%
Dutch160.7%
Irish20.1%

Technology access

Metric% of households
Computer access36.9%
Internet access94.1%

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

Frequently asked questions about ZIP code 50670

What city is ZIP code 50670 in?

ZIP code 50670 is primarily assigned to Shell Rock, Iowa.

What county is ZIP code 50670 in?

ZIP code 50670 falls within Butler County, Iowa.

Is ZIP code 50670 mostly owner-occupied?

88% of occupied units in ZIP code 50670 are owner-occupied, well above the national average.

Does ZIP code 50670 have a large retiree population?

38% of households in ZIP code 50670 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 50670 have a large veteran population?

9% of civilians in ZIP code 50670 are veterans, above the national average of ~7%.

What is the typical home value in ZIP code 50670?

The median home value in ZIP code 50670 is $172,800.

What timezone is ZIP code 50670 in?

ZIP code 50670 observes the CST timezone.

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