50604 ZIP Code — Aplington, IA

Butler County, Iowa

ZIP code 50604 is located in Aplington, Iowa, within Butler County. It covers approximately 71.53 square miles and serves a population of 1,618 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 319.

About ZIP code 50604

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 $135,100. Owner-occupancy is high at 85%, well above the national average.

Median household income is $62,521. 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 education and healthcare as the leading industry. The average commute of 23 minutes is near the national average.

Educational attainment is near the national average, with 24% of residents holding a bachelor's degree or higher.

Overall, ZIP code 50604 reflects a community defined by high homeownership and a significant Social Security-dependent population.

1,618

population

71.53

sq mi land

Standard

ZIP type

Central (CT)

timezone

50604 ZIP code map

Cities in ZIP code 50604

Below are the cities the US Postal Service accepts for ZIP code 50604. Using any city not on this list may result in mail delivery delays.

City	Status
Aplington	Preferred

Nearby ZIP codes

50665 Parkersburg (7.3 mi) 50601 Ackley (9 mi) 50625 Dumont (10.2 mi) 50680 Wellsburg (10.6 mi) 50602 Allison (10.7 mi) 50642 Holland (12.6 mi) 50660 New Hartford (13.6 mi) 50672 Steamboat Rock (14.6 mi) 50670 Shell Rock (14.9 mi) 50638 Grundy Center (16.1 mi) 50624 Dike (16.5 mi) 50605 Aredale (17.3 mi)

Demographics updated 05/2026

Population
Total population	1,618
Population density	23 / sq mi
State FIPS	19
County FIPS	023

Geography
Land area	71.53 sq mi
Water area	0.05 sq mi
Latitude	42.6053
Longitude	-92.8983
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	42.2%	42.3%	40.1%
$50k – $100k	39.4%	37.1%	33.4%
$100k – $200k	17.1%	18.1%	21.5%
Over $200k	1.3%	2.5%	5.0%

Demographics & statistics

1,618

Population

People per sq mi

39.0

Median age

$62,521

Median household income

$33,218

Per capita income

$135,100

Median home value

$675

Median monthly rent

85.3%

Home ownership

11.5%

Poverty rate

1.8%

Unemployment

644

Housing units

23.5%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

124

25–34

116

105

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	396	24.5%
18 and over	1,222	75.5%
65 and over	339	21.0%
Median age	39.0 years

Race & ethnicity

White 97.7%

Two or more races 2%

Asian 0.3%

Black or African American 0.1%

Group	Count	%
White	1,580	97.7%
Two or more races	32	2%
Asian	5	0.3%
Black or African American	1	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	42.2%	42.3%	40.1%
$50k – $100k	39.4%	37.1%	33.4%
$100k – $200k	17.1%	18.1%	21.5%
Over $200k	1.3%	2.5%	5.0%

Under $10k 6.3%

$10k–$15k 1.2%

$15k–$25k 7.9%

$25k–$35k 10.3%

$35k–$50k 6.4%

$50k–$75k 34.4%

$75k–$100k 10.3%

$100k–$150k 13.7%

$150k–$200k 7.6%

$200k+ 2.0%

Range	% of households
Under $10k	6.3%
$10k–$15k	1.2%
$15k–$25k	7.9%
$25k–$35k	10.3%
$35k–$50k	6.4%
$50k–$75k	34.4%
$75k–$100k	10.3%
$100k–$150k	13.7%
$150k–$200k	7.6%
$200k+	2.0%
Median income	$62,521

Housing

Home values

Under $50k 9.2%

$50k–$100k 17.4%

$100k–$150k 28.7%

$150k–$200k 13.5%

$200k–$300k 24.1%

$300k–$500k 5.3%

$500k–$1M 1.2%

$1M+ 0.7%

Housing overview

Metric	Value
Median home value	$135,100
Median rent / month	$675
Owner occupied	85.3%
Renter occupied	14.7%
Vacant	7.8%
Single-family detached	91.0%
Large apartment buildings	2.3%
Mobile homes	1.1%
Median rooms	6.6
Avg household size (owned)	2.37

Year built

Era	%
2020 or later	0.0%
2010–2019	0.4%
2000–2009	3.0%
1990–1999	3.9%
1980–1989	12.3%
1970–1979	22.1%
1960–1969	8.9%
1950–1959	11.5%
1940–1949	4.6%
1939 or earlier	33.3%

Bedrooms

Size	% of units
No bedroom (studio)	0.8%
1 bedroom	7.8%
2 bedrooms	18.1%
3 bedrooms	45.0%
4 bedrooms	22.0%
5+ bedrooms	6.3%

Vehicles per household

Vehicles	% of households
No vehicle	0.4%
1 vehicle	20.2%
2 vehicles	47.0%
3 or more	32.3%

Heating fuel

Fuel type	%
Utility gas	47.9%
Electricity	22.0%
Propane / LP gas	25.6%
Fuel oil	3.5%
Wood	1.0%

Households & families

Household type	Count	%
Married-couple family	373	54.3%
Cohabiting couple	62	9.0%
Male householder, no spouse	160	23.3%
Female householder, no spouse	92	13.4%
Households with children under 18	177	25.8%
Households with seniors (65+)	247	36.0%
Average household size	2.33

Marital status

Status	Male	Female
Never married	18.9%	18.3%
Married	58.8%	62.3%
Separated	4.3%	0.0%
Widowed	8.8%	14.8%
Divorced	9.1%	4.6%

Education

Less than 9th grade 1.7%

Some HS, no diploma 4.5%

HS graduate 32.2%

Some college, no degree 22.2%

Associate's degree 15.9%

Bachelor's degree 18.9%

Graduate / professional 4.6%

Metric	%
HS diploma or higher	93.8%
Bachelor's or higher	23.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	54	16.3%
Kindergarten	20	6.0%
Elementary school	187	56.5%
High school	49	14.8%
College / grad school	21	6.3%

Employment

Industry of employment

Education & healthcare 26.9%

Manufacturing 15.3%

Transportation & utilities 14.6%

Retail trade 8.0%

Agriculture & mining 7.6%

Finance & real estate 5.5%

Arts, food & hospitality 5.2%

Other services 4.5%

Professional & management 4.1%

Wholesale trade 3.5%

Construction 3.1%

Information 1.3%

Public administration 0.4%

Occupation

Category	%
Management, business & arts	29.4%
Service	17.4%
Sales & office	16.2%
Natural resources & construction	7.3%
Production & transportation	29.6%

Employment type

Type	%
Private sector	83.4%
Government	11.3%
Self-employed	2.8%
Unpaid family workers	2.4%

Commute

Method	%
Drive alone	85.5%
Carpool	3.6%
Public transit	0.0%
Walk	3.8%
Work from home	5.6%
Other means	1.6%
Avg commute (minutes)	22.9

Poverty

All people 11.5%

Under 18 years 10.8%

18 and over 11.7%

Married-couple families 8.8%

Female-led households 16.7%

Income support

Source	% of households
Social Security	36.7%
Retirement income	25.5%
Supplemental Security	5.2%
Cash public assistance	2.9%
Food stamps / SNAP	7.1%

Health indicators

Condition	%
Obesity	35.1%
High blood pressure	37.0%
High cholesterol	35.3%
Diabetes	10.9%
Heart disease	8.1%
Stroke	3.6%
Asthma	9.0%
Arthritis	28.6%
Kidney disease	3.3%
Pulmonary disease	7.5%
Cancer	8.6%

Behavior / access	%
Smoking	16.6%
Binge drinking	20.5%
No physical activity	24.4%
Less than 7 hrs sleep	29.5%
Depression	16.6%
Fair or poor health	13.4%
Poor mental health	12.5%
Poor physical health	10.1%
No health insurance	9.0%
Visited doctor (checkup)	75.3%
Visited dentist	68.8%
Cholesterol screening	90.0%
Teeth loss	13.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	66	5.4%

Disability	%
Any disability	6.8%
Under 18	4.8%
18–64 years	4.5%
65 and over	15.3%

Health insurance coverage

Type	%
Private insurance	81.2%
Public insurance	35.6%
No insurance	2.6%
Uninsured under 19	1.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,495	92.4%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,559	96.4%
Born in same state	1,559	96.4%
Born in different state	1,346	83.2%
Foreign born	0	0.0%
Naturalized citizen	59	3.6%
Not a US citizen	34	57.6%

Ancestry

Ancestry	Count	%
Italian	157	9.7%
Arab	106	6.6%
English	94	5.8%
Polish	47	2.9%

Ancestry	Count	%
French	46	2.8%
Dutch	8	0.5%
Irish	4	0.2%

Technology access

Metric	% of households
Computer access	42.5%
Internet access	89.4%

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

Frequently asked questions about ZIP code 50604

What city is ZIP code 50604 in?

ZIP code 50604 is primarily assigned to Aplington, Iowa.

What county is ZIP code 50604 in?

ZIP code 50604 falls within Butler County, Iowa.

Is ZIP code 50604 mostly owner-occupied?

85% of occupied units in ZIP code 50604 are owner-occupied, well above the national average.

Does ZIP code 50604 have a large retiree population?

37% of households in ZIP code 50604 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 50604?

The median home value in ZIP code 50604 is $135,100.

What is the population of ZIP code 50604?

ZIP code 50604 has an estimated population of 1,618 residents, with a density of 23 people per square mile.

What timezone is ZIP code 50604 in?

ZIP code 50604 observes the CST timezone.