50653 ZIP Code — Marble Rock, IA

Floyd County, Iowa

ZIP code 50653 is located in Marble Rock, Iowa, within Floyd County. It covers approximately 51.71 square miles and serves a population of 504 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 641.

About ZIP code 50653

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 $129,200. Owner-occupancy is high at 82%, well above the national average.

Median household income is $69,643. The poverty rate of 4% is below the national average. 39% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with manufacturing as the leading industry. The average commute of 31 minutes is near the national average.

College attainment at 13% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 50653 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.

504

population

51.71

sq mi land

Standard

ZIP type

Central (CT)

timezone

50653 ZIP code map

Cities in ZIP code 50653

Below are the cities the US Postal Service accepts for ZIP code 50653. Using any city not on this list may result in mail delivery delays.

City	Status
Marble Rock	Acceptable
Marble Rock	Preferred

Nearby ZIP codes

50636 Greene (5 mi) 50468 Rockford (6.1 mi) 50605 Aredale (11.1 mi) 50471 Rudd (12.6 mi) 50616 Charles City (13.2 mi) 50435 Floyd (14.1 mi) 50458 Nora Springs (15.3 mi) 50469 Rockwell (15.6 mi) 50619 Clarksville (15.8 mi) 50602 Allison (16.4 mi) 50625 Dumont (16.6 mi) 50658 Nashua (16.9 mi)

Demographics updated 05/2026

Population
Total population	504
Population density	10 / sq mi
State FIPS	19
County FIPS	067

Geography
Land area	51.71 sq mi
Water area	0.30 sq mi
Latitude	42.9656
Longitude	-92.8787
Timezone	Central (CT)
Area code	641

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	35.6%	46.9%	40.1%
$50k – $100k	33.9%	32.2%	33.4%
$100k – $200k	26.7%	16.6%	21.5%
Over $200k	3.8%	4.3%	5.0%

Demographics & statistics

504

Population

People per sq mi

44.5

Median age

$69,643

Median household income

$33,281

Per capita income

$129,200

Median home value

$618

Median monthly rent

81.8%

Home ownership

4.2%

Poverty rate

3.2%

Unemployment

185

Housing units

13.2%

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	119	23.6%
18 and over	385	76.4%
65 and over	122	24.2%
Median age	44.5 years

Race & ethnicity

White 96.3%

Two or more races 2.1%

Hispanic or Latino 1.6%

Group	Count	%
White	493	96.3%
Two or more races	11	2.1%
Hispanic or Latino	8	1.6%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	35.6%	46.9%	40.1%
$50k – $100k	33.9%	32.2%	33.4%
$100k – $200k	26.7%	16.6%	21.5%
Over $200k	3.8%	4.3%	5.0%

Under $10k 4.5%

$10k–$15k 2.0%

$15k–$25k 3.0%

$25k–$35k 5.1%

$35k–$50k 19.7%

$50k–$75k 20.7%

$75k–$100k 5.6%

$100k–$150k 29.8%

$150k–$200k 4.5%

$200k+ 5.1%

Range	% of households
Under $10k	4.5%
$10k–$15k	2.0%
$15k–$25k	3.0%
$25k–$35k	5.1%
$35k–$50k	19.7%
$50k–$75k	20.7%
$75k–$100k	5.6%
$100k–$150k	29.8%
$150k–$200k	4.5%
$200k+	5.1%
Median income	$69,643

Housing

Home values

Under $50k 22.8%

$50k–$100k 15.4%

$100k–$150k 14.8%

$150k–$200k 27.2%

$200k–$300k 19.8%

Housing overview

Metric	Value
Median home value	$129,200
Median rent / month	$618
Owner occupied	81.8%
Renter occupied	18.2%
Vacant	10.4%
Single-family detached	94.1%
Large apartment buildings	0.9%
Mobile homes	0.9%
Median rooms	6.1
Avg household size (owned)	2.52

Year built

Era	%
2020 or later	0.0%
2010–2019	5.9%
2000–2009	8.6%
1990–1999	0.5%
1980–1989	5.9%
1970–1979	27.1%
1960–1969	7.2%
1950–1959	6.8%
1940–1949	5.4%
1939 or earlier	32.6%

Bedrooms

Size	% of units
No bedroom (studio)	1.4%
1 bedroom	4.1%
2 bedrooms	29.0%
3 bedrooms	43.4%
4 bedrooms	17.2%
5+ bedrooms	5.0%

Vehicles per household

Vehicles	% of households
No vehicle	3.0%
1 vehicle	25.3%
2 vehicles	22.7%
3 or more	49.0%

Heating fuel

Fuel type	%
Utility gas	50.5%
Electricity	14.1%
Propane / LP gas	32.3%
Wood	2.0%

Households & families

Household type	Count	%
Married-couple family	115	58.1%
Cohabiting couple	17	8.6%
Male householder, no spouse	39	19.7%
Female householder, no spouse	27	13.6%
Households with children under 18	61	30.8%
Households with seniors (65+)	82	41.4%
Average household size	2.55

Marital status

Status	Male	Female
Never married	39.8%	16.5%
Married	41.6%	65.2%
Separated	0.0%	0.6%
Widowed	6.9%	6.1%
Divorced	11.7%	11.6%

Education

Less than 9th grade 3.3%

Some HS, no diploma 6.0%

HS graduate 40.7%

Some college, no degree 20.7%

Associate's degree 16.2%

Bachelor's degree 12.6%

Graduate / professional 0.6%

Metric	%
HS diploma or higher	90.7%
Bachelor's or higher	13.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	19	15.6%
Kindergarten	4	3.3%
Elementary school	32	26.2%
High school	54	44.3%
College / grad school	13	10.7%

Employment

Industry of employment

Manufacturing 22.9%

Education & healthcare 20.8%

Agriculture & mining 13.8%

Public administration 11.7%

Retail trade 6.3%

Construction 5.8%

Finance & real estate 5.4%

Arts, food & hospitality 5.0%

Transportation & utilities 2.9%

Wholesale trade 2.1%

Information 1.3%

Professional & management 1.3%

Other services 0.8%

Occupation

Category	%
Management, business & arts	27.5%
Service	12.1%
Sales & office	15.4%
Natural resources & construction	18.8%
Production & transportation	26.3%

Employment type

Type	%
Private sector	71.7%
Government	17.1%
Self-employed	10.8%
Unpaid family workers	0.4%

Commute

Method	%
Drive alone	81.3%
Carpool	13.8%
Public transit	0.0%
Walk	1.3%
Work from home	3.8%
Other means	0.0%
Avg commute (minutes)	31.4

Poverty

All people 4.2%

Under 18 years 5.0%

18 and over 3.9%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	39.4%
Retirement income	34.3%
Supplemental Security	7.6%
Cash public assistance	1.5%
Food stamps / SNAP	6.1%

Health indicators

Condition	%
Obesity	38.2%
High blood pressure	35.8%
High cholesterol	34.5%
Diabetes	10.8%
Heart disease	7.5%
Stroke	3.3%
Asthma	9.0%
Arthritis	27.3%
Kidney disease	3.1%
Pulmonary disease	7.3%
Cancer	8.1%

Behavior / access	%
Smoking	16.5%
Binge drinking	20.0%
No physical activity	23.5%
Less than 7 hrs sleep	30.0%
Depression	16.9%
Fair or poor health	12.9%
Poor mental health	12.6%
Poor physical health	9.8%
No health insurance	8.5%
Visited doctor (checkup)	76.4%
Visited dentist	68.7%
Cholesterol screening	89.8%
Teeth loss	12.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	30	7.8%

Disability	%
Any disability	13.7%
Under 18	10.9%
18–64 years	10.6%
65 and over	23.0%

Health insurance coverage

Type	%
Private insurance	82.7%
Public insurance	39.9%
No insurance	1.4%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	478	94.8%
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)	503	99.8%
Born in same state	503	99.8%
Born in different state	468	92.9%
Foreign born	0	0.0%
Naturalized citizen	1	0.2%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
French	35	6.9%
Italian	30	6%
Polish	14	2.8%

Ancestry	Count	%
Arab	10	2%
English	8	1.6%

Technology access

Metric	% of households
Computer access	39.3%
Internet access	93.9%

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

Frequently asked questions about ZIP code 50653

What city is ZIP code 50653 in?

ZIP code 50653 is primarily assigned to Marble Rock, Iowa.

What county is ZIP code 50653 in?

ZIP code 50653 falls within Floyd County, Iowa.

How educated is the population of ZIP code 50653?

13% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Is ZIP code 50653 mostly owner-occupied?

82% of occupied units in ZIP code 50653 are owner-occupied, well above the national average.

Does ZIP code 50653 have a large retiree population?

39% of households in ZIP code 50653 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 50653?

The median home value in ZIP code 50653 is $129,200.

What timezone is ZIP code 50653 in?

ZIP code 50653 observes the CST timezone.