Charter Oak ZIP Codes — Crawford County, IA

There is one unique ZIP code in Charter Oak, Iowa and it is 51439. Area code: 712.

ZIP codes

85.93

sq mi land

0.17

sq mi water

712

area code

Charter Oak, IA ZIP code map

About Charter Oak, IA

Charter Oak, Iowa, is a small and welcoming community located in Crawford County. Known for its rural charm and friendly atmosphere, it offers residents a tight-knit community feel. Charter Oak serves as a peaceful retreat from the bustling cities, making it an ideal location for those seeking a quieter lifestyle.

Location & geography

Charter Oak is situated in the western part of Iowa and is surrounded by picturesque landscapes that reflect the natural beauty of the region. Nearby cities include Dow City, located approximately 6 miles to the east, and Manilla, about 8 miles to the north. The total land area of Charter Oak is 85.93 square miles, complemented by a water area of 0.17 square miles, showcasing the area's lush terrain.

Community & economy

The character of Charter Oak embodies the essence of small-town Iowa, where community events and gatherings strengthen relationships among residents. The local economy includes agriculture and small businesses, which are vital to the daily lives of those living in the area. Charter Oak’s daily life revolves around a friendly atmosphere, with local parks and communal spaces fostering connections among neighbors.

Transportation

Highway 30 runs close to Charter Oak, providing convenient access to other parts of Iowa. The nearest named airport is the Denison Municipal Airport, roughly 15 miles to the southeast, which serves general aviation needs. Public transit options are limited, typically requiring residents to rely on personal vehicles for transportation.

History

Charter Oak was founded in the late 19th century, and it has historically been supported by agriculture as a cornerstone of its economy. Key events in the town's history often revolve around agricultural fairs and community gatherings that celebrate local culture and heritage. Although small, Charter Oak has maintained its legacy through its enduring community spirit and commitment to growth.

Did you know?

A little-known fact about Charter Oak is that its name originates from a large oak tree that once stood in the area, representing strength and endurance. Charter Oak is also notable for being situated on the scenic byways of western Iowa, attracting those interested in exploring natural landscapes.

ZIP codes for Charter Oak, IA (1)

ZIP code	City	County	Map
51439	Charter Oak	Crawford	View map

Demographics & statistics

771

Population

56.4

Median age

$60,667

Median household income

$33,741

Per capita income

$84,700

Median home value

$703

Median monthly rent

67.4%

Home ownership

16.1%

Poverty rate

1.1%

Unemployment

319

Housing units

8.7%

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	126	16.3%
18 and over	645	83.7%
65 and over	273	35.4%
Median age	56.4 years

Race & ethnicity

White 96.2%

Two or more races 2.2%

Asian 1.3%

American Indian / Alaska Native 0.3%

Group	Count	%
White	742	96.2%
Two or more races	17	2.2%
Asian	10	1.3%
American Indian / Alaska Native	2	0.3%

Household income

Under $10k 3.1%

$10k–$15k 4.3%

$15k–$25k 9.4%

$25k–$35k 5.7%

$35k–$50k 16.6%

$50k–$75k 27.4%

$75k–$100k 20.0%

$100k–$150k 7.4%

$150k–$200k 2.6%

$200k+ 3.4%

Range	% of households
Under $10k	3.1%
$10k–$15k	4.3%
$15k–$25k	9.4%
$25k–$35k	5.7%
$35k–$50k	16.6%
$50k–$75k	27.4%
$75k–$100k	20.0%
$100k–$150k	7.4%
$150k–$200k	2.6%
$200k+	3.4%
Median income	$60,667

Housing

Home values

Under $50k 28.8%

$50k–$100k 28.0%

$100k–$150k 29.2%

$150k–$200k 3.0%

$200k–$300k 8.1%

$300k–$500k 3.0%

Housing overview

Metric	Value
Median home value	$84,700
Median rent / month	$703
Owner occupied	67.4%
Renter occupied	32.6%
Vacant	19.2%
Single-family detached	96.5%
Large apartment buildings	0.0%
Mobile homes	3.5%
Median rooms	6.7
Avg household size (owned)	1.99

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	0.2%
1990–1999	3.9%
1980–1989	2.1%
1970–1979	18.7%
1960–1969	7.4%
1950–1959	7.9%
1940–1949	2.5%
1939 or earlier	57.3%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	1.8%
2 bedrooms	28.2%
3 bedrooms	43.4%
4 bedrooms	20.6%
5+ bedrooms	6.0%

Vehicles per household

Vehicles	% of households
No vehicle	0.9%
1 vehicle	19.1%
2 vehicles	40.0%
3 or more	40.0%

Heating fuel

Fuel type	%
Utility gas	8.0%
Electricity	46.3%
Propane / LP gas	39.7%
Fuel oil	3.7%
Wood	0.9%

Households & families

Household type	Count	%
Married-couple family	172	49.1%
Cohabiting couple	40	11.4%
Male householder, no spouse	87	24.9%
Female householder, no spouse	51	14.6%
Households with children under 18	46	13.1%
Households with seniors (65+)	169	48.3%
Average household size	2.20

Marital status

Status	Male	Female
Never married	16.0%	8.4%
Married	53.6%	66.2%
Separated	1.1%	0.0%
Widowed	8.8%	12.3%
Divorced	20.5%	13.0%

Education

Less than 9th grade 3.4%

Some HS, no diploma 4.3%

HS graduate 49.7%

Some college, no degree 25.8%

Associate's degree 8.2%

Bachelor's degree 5.6%

Graduate / professional 3.0%

Metric	%
HS diploma or higher	92.3%
Bachelor's or higher	8.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	27	26.2%
Kindergarten	9	8.7%
Elementary school	50	48.5%
High school	13	12.6%
College / grad school	4	3.9%

Employment

Industry of employment

Education & healthcare 23.8%

Agriculture & mining 23.5%

Retail trade 15.5%

Transportation & utilities 9.6%

Other services 9.6%

Manufacturing 4.8%

Arts, food & hospitality 3.5%

Wholesale trade 2.7%

Public administration 2.7%

Finance & real estate 2.1%

Construction 0.8%

Professional & management 0.8%

Information 0.5%

Occupation

Category	%
Management, business & arts	27.8%
Service	16.6%
Sales & office	17.6%
Natural resources & construction	17.9%
Production & transportation	20.1%

Employment type

Type	%
Private sector	65.2%
Government	11.8%
Self-employed	23.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	83.4%
Carpool	0.8%
Public transit	0.0%
Walk	0.0%
Other means	1.6%
Avg commute (minutes)	19.3

Poverty

All people 16.1%

Under 18 years 29.4%

18 and over 13.5%

Married-couple families 7.0%

Female-led households 87.5%

Income support

Source	% of households
Social Security	46.0%
Retirement income	20.9%
Supplemental Security	1.1%
Cash public assistance	0.9%
Food stamps / SNAP	11.1%

Health indicators

Condition	%
High blood pressure	37.8%
High cholesterol	36.9%
Heart disease	8.9%
Stroke	4.1%
Asthma	9.6%
Arthritis	28.8%
Kidney disease	3.6%
Pulmonary disease	9.2%
Cancer	8.1%

Behavior / access	%
Binge drinking	19.5%
No physical activity	30.5%
Less than 7 hrs sleep	31.8%
Fair or poor health	16.6%
Poor mental health	13.7%
Poor physical health	12.0%
No health insurance	11.0%
Visited doctor (checkup)	75.1%
Visited dentist	62.2%
Cholesterol screening	88.3%
Teeth loss	17.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	86	13.3%

Disability	%
Any disability	19.5%
Under 18	3.2%
18–64 years	10.2%
65 and over	39.6%

Health insurance coverage

Type	%
Private insurance	67.8%
Public insurance	56.5%
Uninsured under 19	1.6%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	723	93.8%
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)	763	99.0%
Born in same state	756	98.1%
Born in different state	619	80.3%
Foreign born	7	0.9%
Naturalized citizen	8	1.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Italian	103	13.4%
Polish	48	6.2%
French	45	5.8%

Ancestry	Count	%
Arab	44	5.7%
Dutch	7	0.9%
English	3	0.4%

Technology access

Metric	% of households
Computer access	45.4%
Internet access	77.1%

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

Frequently asked questions

What ZIP codes does Charter Oak, IA have?

Charter Oak, IA has one ZIP code: 51439. Each ZIP code serves a distinct delivery area within the city and surrounding region.