Ionia ZIP Codes — Chickasaw County, IA

There is one unique ZIP code in Ionia, Iowa and it is 50645. Area code: 641.

ZIP codes

85.63

sq mi land

0.21

sq mi water

641

area code

Ionia, IA ZIP code map

About Ionia, IA

Ionia is a charming city located in the state of Iowa. Nestled in Chickasaw County, this small community offers a serene lifestyle amidst the picturesque landscapes of rural Iowa. With its unique blend of history and local culture, Ionia serves as a peaceful retreat for residents and visitors alike.

Location & geography

Ionia is situated in the north-central part of Iowa, with an expansive land area of 85.63 square miles and a small water area of 0.21 square miles. The city is surrounded by several nearby communities, including New Hampton, approximately 10 miles to the northeast, and Fredericksburg, about 7 miles to the west. The terrain is predominantly flat, characteristic of Iowa's rolling plains, and the nearby Cedar River adds to the natural beauty of the area.

Community & economy

The community of Ionia is known for its friendly atmosphere and strong sense of camaraderie, where residents often come together for local events and celebrations. Agriculture is a significant aspect of the local economy, with farming and related industries playing a vital role in daily life. Ionia's residents enjoy a laid-back lifestyle, with access to recreational activities and local gatherings that foster close-knit relationships.

Transportation

Ionia is conveniently connected to nearby cities and regions via U.S. Route 18, providing essential access to larger urban areas. The nearest major airport is the Waterloo Regional Airport, located roughly 30 miles to the southwest, facilitating air travel for residents and visitors. Public transit options are limited, so personal vehicles are the primary means of transportation for locals.

History

Ionia was originally founded in the late 19th century, and its establishment was closely tied to the expansion of the railroad system in Iowa. Throughout its history, the city's economy has been driven by agriculture, which remains integral to the community's identity. Notable events include various local festivals that celebrate the town's rural heritage and its agricultural roots.

Did you know?

One surprising fact about Ionia is its strong community spirit, which is reflected in the many volunteer organizations and clubs that residents participate in. Additionally, despite its small size, Ionia hosts several events throughout the year that attract visitors from surrounding areas, showcasing its vibrant local culture.

ZIP codes for Ionia, IA (1)

ZIP code	City	County	Map
50645	Ionia	Chickasaw	View map

Demographics & statistics

1,391

Population

51.5

Median age

$64,531

Median household income

$30,398

Per capita income

$109,700

Median home value

$700

Median monthly rent

88.4%

Home ownership

9.8%

Poverty rate

2.1%

Unemployment

671

Housing units

11.6%

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	291	20.9%
18 and over	1,100	79.1%
65 and over	339	24.4%
Median age	51.5 years

Race & ethnicity

White 95.9%

Black or African American 3.9%

Asian 0.1%

Two or more races 0.1%

Group	Count	%
White	1,334	95.9%
Black or African American	54	3.9%
Asian	2	0.1%
Two or more races	1	0.1%

Household income

Under $10k 14.6%

$10k–$15k 3.2%

$15k–$25k 3.8%

$25k–$35k 4.8%

$35k–$50k 17.0%

$50k–$75k 21.0%

$75k–$100k 13.8%

$100k–$150k 15.3%

$150k–$200k 0.7%

$200k+ 5.8%

Range	% of households
Under $10k	14.6%
$10k–$15k	3.2%
$15k–$25k	3.8%
$25k–$35k	4.8%
$35k–$50k	17.0%
$50k–$75k	21.0%
$75k–$100k	13.8%
$100k–$150k	15.3%
$150k–$200k	0.7%
$200k+	5.8%
Median income	$64,531

Housing

Home values

Under $50k 9.8%

$50k–$100k 37.3%

$100k–$150k 13.0%

$150k–$200k 13.2%

$200k–$300k 15.8%

$300k–$500k 9.4%

$500k–$1M 1.5%

Housing overview

Metric	Value
Median home value	$109,700
Median rent / month	$700
Owner occupied	88.4%
Renter occupied	11.6%
Vacant	18.9%
Single-family detached	95.0%
Large apartment buildings	0.0%
Mobile homes	0.3%
Median rooms	6.7
Avg household size (owned)	2.18

Year built

Era	%
2020 or later	0.0%
2010–2019	4.9%
2000–2009	1.5%
1990–1999	3.9%
1980–1989	5.1%
1970–1979	10.7%
1960–1969	5.5%
1950–1959	17.8%
1940–1949	6.6%
1939 or earlier	44.0%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	8.1%
2 bedrooms	15.1%
3 bedrooms	40.9%
4 bedrooms	33.7%
5+ bedrooms	2.2%

Vehicles per household

Vehicles	% of households
No vehicle	16.6%
1 vehicle	10.0%
2 vehicles	37.8%
3 or more	35.6%

Heating fuel

Fuel type	%
Utility gas	30.0%
Electricity	8.8%
Propane / LP gas	57.6%
Fuel oil	0.5%
Wood	1.7%
No fuel used	0.2%

Households & families

Household type	Count	%
Married-couple family	340	56.6%
Cohabiting couple	44	7.3%
Male householder, no spouse	135	22.5%
Female householder, no spouse	82	13.6%
Households with children under 18	99	16.5%
Households with seniors (65+)	191	31.8%
Average household size	2.31

Marital status

Status	Male	Female
Never married	24.9%	15.6%
Married	56.9%	66.4%
Separated	0.0%	0.9%
Widowed	0.3%	6.6%
Divorced	17.9%	10.4%

Education

Less than 9th grade 5.0%

Some HS, no diploma 4.2%

HS graduate 50.5%

Some college, no degree 19.5%

Associate's degree 9.2%

Bachelor's degree 9.8%

Graduate / professional 1.8%

Metric	%
HS diploma or higher	90.8%
Bachelor's or higher	11.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	45	14.9%
Kindergarten	38	12.5%
Elementary school	124	40.9%
High school	46	15.2%
College / grad school	50	16.5%

Employment

Industry of employment

Education & healthcare 23.7%

Manufacturing 20.5%

Agriculture & mining 16.5%

Finance & real estate 9.1%

Other services 6.4%

Construction 6.1%

Retail trade 4.5%

Professional & management 4.2%

Transportation & utilities 3.5%

Wholesale trade 3.0%

Public administration 2.0%

Arts, food & hospitality 0.5%

Occupation

Category	%
Management, business & arts	16.0%
Service	17.1%
Sales & office	18.5%
Natural resources & construction	27.2%
Production & transportation	21.2%

Employment type

Type	%
Private sector	82.5%
Government	7.1%
Self-employed	8.7%
Unpaid family workers	1.7%

Commute

Method	%
Drive alone	72.0%
Carpool	8.6%
Public transit	0.0%
Walk	0.2%
Other means	2.5%
Avg commute (minutes)	25.0

Poverty

All people 9.8%

Under 18 years 0.3%

18 and over 12.4%

Married-couple families 5.0%

Female-led households 6.5%

Income support

Source	% of households
Social Security	34.1%
Retirement income	31.4%
Supplemental Security	1.3%
Cash public assistance	0.3%
Food stamps / SNAP	5.0%

Health indicators

Condition	%
High blood pressure	36.6%
High cholesterol	33.0%
Heart disease	7.4%
Stroke	3.4%
Asthma	9.3%
Arthritis	27.0%
Kidney disease	3.1%
Pulmonary disease	7.9%
Cancer	7.2%

Behavior / access	%
Binge drinking	22.5%
No physical activity	25.2%
Less than 7 hrs sleep	32.0%
Fair or poor health	14.1%
Poor mental health	13.5%
Poor physical health	10.7%
No health insurance	10.0%
Visited doctor (checkup)	72.8%
Visited dentist	64.6%
Cholesterol screening	88.9%
Teeth loss	14.7%

Veterans & disability

Veterans	Count	%
Civilian veterans	61	5.5%

Disability	%
Any disability	12.7%
Under 18	3.4%
18–64 years	8.8%
65 and over	29.5%

Health insurance coverage

Type	%
Private insurance	68.8%
Public insurance	44.7%
Uninsured under 19	21.2%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,339	96.3%
Spanish	36	2.7%
Other Indo-European	15	1.1%
Asian & Pacific Islander	21	1.6%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,389	99.9%
Born in same state	1,389	99.9%
Born in different state	1,212	87.1%
Foreign born	0	0.0%
Naturalized citizen	2	0.1%
Not a US citizen	2	100.0%

Ancestry

Ancestry	Count	%
Italian	190	13.7%
Arab	149	10.7%
Polish	121	8.7%

Ancestry	Count	%
French	88	6.3%
English	27	1.9%
Irish	1	0.1%

Technology access

Metric	% of households
Computer access	43.2%
Internet access	77.4%

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

Frequently asked questions

What ZIP codes does Ionia, IA have?

Ionia, IA has one ZIP code: 50645. Each ZIP code serves a distinct delivery area within the city and surrounding region.