Plymouth ZIP Codes — Cerro Gordo County, IA

There is one unique ZIP code in Plymouth, Iowa and it is 50464. Area code: 641.

ZIP codes

24.54

sq mi land

0.00

sq mi water

641

area code

Plymouth, IA ZIP code map

About Plymouth, IA

Plymouth is a charming city located in the state of Iowa, nestled within Cerro Gordo County. This small but vibrant community is characterized by its friendly atmosphere and welcoming residents. With a rich agricultural heritage, Plymouth showcases the quintessential small-town life in America.

Location & geography

Plymouth is situated in north-central Iowa, making it well-connected to a number of neighboring cities. Notable nearby cities include Mason City, located approximately 11 miles to the southwest, and Clear Lake, about 16 miles to the northeast. The city covers a total land area of 24.54 square miles, with no water area, offering a predominantly rural terrain.

Community & economy

The character of Plymouth is defined by its tight-knit community and strong focus on agriculture. Residents enjoy a peaceful way of life, with local farms and businesses contributing significantly to the economy. Daily life in Plymouth reflects traditional Iowa values, with community events and gatherings enhancing the close bonds among neighbors.

Transportation

Plymouth is accessible via U.S. Route 18, which runs east-west through the area, facilitating travel to nearby cities. The nearest major airport is the Mason City Municipal Airport, located roughly 11 miles to the southwest, catering to both regional and commuter flights. Public transportation options may be limited due to the city's rural nature.

History

Plymouth was founded in the late 19th century, establishing itself as a hub for agriculture and farming. Over the years, the city has maintained its agricultural roots, with farming remaining a key industry in the community. While there have been no major historical events recorded, the city's development has typically mirrored the growth patterns of rural Iowa.

Did you know?

One surprising fact about Plymouth is that it is often overlooked as a destination for those exploring the charm of rural Iowa. Despite its small size, Plymouth serves as a gateway to exploring the beautiful landscapes and agricultural heritage of Cerro Gordo County.

ZIP codes for Plymouth, IA (1)

ZIP code	City	County	Map
50464	Plymouth	Cerro Gordo	View map

Demographics & statistics

512

Population

45.0

Median age

$74,583

Median household income

$40,011

Per capita income

$143,500

Median home value

$917

Median monthly rent

90.5%

Home ownership

7.2%

Poverty rate

0.4%

Unemployment

230

Housing units

16.8%

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	121	23.6%
18 and over	391	76.4%
65 and over	134	26.2%
Median age	45.0 years

Race & ethnicity

White 97.5%

Two or more races 1.6%

Black or African American 0.6%

Asian 0.2%

American Indian / Alaska Native 0.2%

Group	Count	%
White	499	97.5%
Two or more races	8	1.6%
Black or African American	3	0.6%
Asian	1	0.2%
American Indian / Alaska Native	1	0.2%

Household income

Under $10k 2.5%

$10k–$15k 3.5%

$15k–$25k 6.0%

$25k–$35k 3.0%

$35k–$50k 11.4%

$50k–$75k 23.9%

$75k–$100k 12.9%

$100k–$150k 22.4%

$150k–$200k 3.5%

$200k+ 10.9%

Range	% of households
Under $10k	2.5%
$10k–$15k	3.5%
$15k–$25k	6.0%
$25k–$35k	3.0%
$35k–$50k	11.4%
$50k–$75k	23.9%
$75k–$100k	12.9%
$100k–$150k	22.4%
$150k–$200k	3.5%
$200k+	10.9%
Median income	$74,583

Housing

Home values

Under $50k 15.4%

$50k–$100k 18.1%

$100k–$150k 20.3%

$150k–$200k 22.5%

$200k–$300k 18.1%

$300k–$500k 4.9%

$500k–$1M 0.5%

Housing overview

Metric	Value
Median home value	$143,500
Median rent / month	$917
Owner occupied	90.5%
Renter occupied	9.5%
Vacant	19.3%
Single-family detached	92.0%
Large apartment buildings	0.0%
Mobile homes	2.4%
Median rooms	6.7
Avg household size (owned)	2.53

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	4.8%
1990–1999	1.2%
1980–1989	5.2%
1970–1979	16.9%
1960–1969	8.0%
1950–1959	11.2%
1940–1949	1.6%
1939 or earlier	51.0%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	5.6%
2 bedrooms	15.7%
3 bedrooms	61.4%
4 bedrooms	8.4%
5+ bedrooms	8.8%

Vehicles per household

Vehicles	% of households
No vehicle	1.0%
1 vehicle	13.9%
2 vehicles	38.8%
3 or more	46.3%

Heating fuel

Fuel type	%
Utility gas	1.5%
Electricity	5.5%
Propane / LP gas	82.1%
Fuel oil	3.0%
Wood	3.5%
Solar	0.5%
No fuel used	4.0%

Households & families

Household type	Count	%
Married-couple family	139	69.2%
Cohabiting couple	14	7.0%
Male householder, no spouse	21	10.4%
Female householder, no spouse	27	13.4%
Households with children under 18	54	26.9%
Households with seniors (65+)	81	40.3%
Average household size	2.55

Marital status

Status	Male	Female
Never married	25.7%	21.4%
Married	63.1%	62.8%
Separated	1.4%	0.0%
Widowed	0.0%	8.4%
Divorced	9.8%	7.4%

Education

Less than 9th grade 0.3%

Some HS, no diploma 3.3%

HS graduate 35.0%

Some college, no degree 26.2%

Associate's degree 18.5%

Bachelor's degree 15.4%

Graduate / professional 1.4%

Metric	%
HS diploma or higher	96.4%
Bachelor's or higher	16.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	2	1.7%
Elementary school	45	37.8%
High school	66	55.5%
College / grad school	6	5.0%

Employment

Industry of employment

Education & healthcare 22.3%

Manufacturing 13.9%

Professional & management 9.6%

Retail trade 8.8%

Other services 8.8%

Arts, food & hospitality 7.6%

Construction 6.8%

Wholesale trade 5.6%

Agriculture & mining 4.8%

Transportation & utilities 4.0%

Public administration 4.0%

Finance & real estate 2.8%

Information 1.2%

Occupation

Category	%
Management, business & arts	19.9%
Service	24.7%
Sales & office	21.9%
Natural resources & construction	13.5%
Production & transportation	19.9%

Employment type

Type	%
Private sector	81.7%
Government	9.6%
Self-employed	8.8%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	79.8%
Carpool	10.5%
Public transit	0.0%
Walk	2.0%
Other means	0.4%
Avg commute (minutes)	20.0

Poverty

All people 7.2%

Under 18 years 11.6%

18 and over 5.9%

Married-couple families 2.2%

Female-led households 0.0%

Income support

Source	% of households
Social Security	41.8%
Retirement income	32.8%
Supplemental Security	2.5%
Cash public assistance	0.0%
Food stamps / SNAP	3.5%

Health indicators

Condition	%
High blood pressure	31.8%
High cholesterol	32.4%
Heart disease	6.1%
Stroke	2.7%
Asthma	9.1%
Arthritis	23.7%
Kidney disease	2.6%
Pulmonary disease	6.1%
Cancer	6.7%

Behavior / access	%
Binge drinking	22.5%
No physical activity	22.5%
Less than 7 hrs sleep	31.6%
Fair or poor health	11.2%
Poor mental health	13.1%
Poor physical health	8.9%
No health insurance	8.6%
Visited doctor (checkup)	74.8%
Visited dentist	70.9%
Cholesterol screening	89.0%
Teeth loss	10.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	34	8.7%

Disability	%
Any disability	7.4%
Under 18	1.7%
18–64 years	6.2%
65 and over	14.9%

Health insurance coverage

Type	%
Private insurance	69.1%
Public insurance	43.6%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	482	94.1%
Spanish	3	0.6%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	3	0.6%

Place of birth & citizenship

Origin	Count	%
Native born (US)	511	99.8%
Born in same state	509	99.4%
Born in different state	420	82.0%
Foreign born	2	0.4%
Naturalized citizen	1	0.2%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Polish	49	9.6%
French	44	8.6%
English	27	5.3%

Ancestry	Count	%
Italian	20	3.9%
Arab	8	1.6%
Dutch	5	1%

Technology access

Metric	% of households
Computer access	39.3%
Internet access	95.5%

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

Frequently asked questions

What ZIP codes does Plymouth, IA have?

Plymouth, IA has one ZIP code: 50464. Each ZIP code serves a distinct delivery area within the city and surrounding region.