Diagonal ZIP Codes — Ringgold County, IA

There is one unique ZIP code in Diagonal, Iowa and it is 50845. Area code: 641.

ZIP codes

111.86

sq mi land

0.51

sq mi water

641

area code

Diagonal, IA ZIP code map

About Diagonal, IA

Diagonal is a small city located in Ringgold County, Iowa. It provides a quiet and peaceful atmosphere for its residents, reflecting the charm of rural American life. With a rich agricultural backdrop, Diagonal offers a unique glimpse into community life in the Midwest.

Location & geography

Situated in the southwestern part of Iowa, Diagonal is approximately 40 miles south of Des Moines. It is surrounded by several neighboring cities, including Mount Ayr to the northwest, Afton to the east, and Bedford to the north. The total land area of Diagonal is 111.86 square miles, complemented by a small water area of 0.51 square miles, creating a predominantly rural landscape.

Community & economy

The community of Diagonal is characterized by its friendly residents who value close-knit relationships. Agriculture plays a significant role in the local economy, with many families engaged in farming and related industries. Daily life in Diagonal revolves around community gatherings, local events, and a strong appreciation for the area's natural beauty.

Transportation

Diagonal is accessible via several local roads, with nearby State Highway 2 serving as a major route for travelers. The nearest named airports are located in larger neighboring cities, providing essential access to regional air travel. Public transportation options are minimal, but the city’s compact size makes it easy for residents to navigate on foot or by personal vehicle.

History

Diagonal was founded as a rural community and has preserved its agricultural roots through the years. Key industries have historically included farming and agriculture, which continue to be significant for the local economy. Notable events in the city's calendar, such as local fairs and festivals, celebrate the area's heritage and bring the community together.

Did you know?

One surprising fact about Diagonal is that it has only one ZIP code, 50845, which reflects its small size. Additionally, the city is known for its picturesque landscapes that embody the essence of traditional Iowa farmland.

ZIP codes for Diagonal, IA (1)

ZIP code	City	County	Map
50845	Diagonal	Ringgold	View map

Demographics & statistics

814

Population

43.6

Median age

$68,523

Median household income

$24,363

Per capita income

$106,800

Median home value

$839

Median monthly rent

82.6%

Home ownership

14.9%

Poverty rate

0.3%

Unemployment

250

Housing units

20.5%

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	206	25.3%
18 and over	608	74.7%
65 and over	220	27.0%
Median age	43.6 years

Race & ethnicity

White 89.7%

Two or more races 9.2%

Hispanic or Latino 1.1%

Group	Count	%
White	738	89.7%
Two or more races	76	9.2%
Hispanic or Latino	9	1.1%

Household income

Under $10k 0.8%

$10k–$15k 2.3%

$15k–$25k 6.4%

$25k–$35k 6.4%

$35k–$50k 14.3%

$50k–$75k 22.6%

$75k–$100k 24.5%

$100k–$150k 14.3%

$150k–$200k 7.9%

$200k+ 0.4%

Range	% of households
Under $10k	0.8%
$10k–$15k	2.3%
$15k–$25k	6.4%
$25k–$35k	6.4%
$35k–$50k	14.3%
$50k–$75k	22.6%
$75k–$100k	24.5%
$100k–$150k	14.3%
$150k–$200k	7.9%
$200k+	0.4%
Median income	$68,523

Housing

Home values

Under $50k 13.2%

$50k–$100k 33.8%

$100k–$150k 12.3%

$150k–$200k 7.8%

$200k–$300k 15.1%

$300k–$500k 11.4%

$500k–$1M 4.1%

$1M+ 2.3%

Housing overview

Metric	Value
Median home value	$106,800
Median rent / month	$839
Owner occupied	82.6%
Renter occupied	17.4%
Vacant	10.5%
Single-family detached	89.2%
Large apartment buildings	0.0%
Mobile homes	7.1%
Median rooms	6.4
Avg household size (owned)	2.68

Year built

Era	%
2020 or later	0.0%
2010–2019	7.1%
2000–2009	9.5%
1990–1999	11.1%
1980–1989	8.8%
1970–1979	4.4%
1960–1969	5.7%
1950–1959	5.7%
1940–1949	2.7%
1939 or earlier	44.9%

Bedrooms

Size	% of units
No bedroom (studio)	1.4%
1 bedroom	8.8%
2 bedrooms	23.0%
3 bedrooms	32.1%
4 bedrooms	17.9%
5+ bedrooms	16.9%

Vehicles per household

Vehicles	% of households
No vehicle	3.0%
1 vehicle	14.7%
2 vehicles	29.1%
3 or more	53.2%

Heating fuel

Fuel type	%
Utility gas	2.6%
Electricity	18.5%
Propane / LP gas	69.8%
Fuel oil	1.9%
Wood	3.0%
No fuel used	2.3%

Households & families

Household type	Count	%
Married-couple family	162	61.1%
Cohabiting couple	26	9.8%
Male householder, no spouse	38	14.3%
Female householder, no spouse	39	14.7%
Households with children under 18	111	41.9%
Households with seniors (65+)	59	22.3%
Average household size	2.57

Marital status

Status	Male	Female
Never married	32.7%	22.5%
Married	50.2%	46.1%
Separated	1.1%	0.0%
Widowed	7.8%	20.9%
Divorced	8.2%	10.5%

Education

Less than 9th grade 2.1%

Some HS, no diploma 4.9%

HS graduate 40.0%

Some college, no degree 25.6%

Associate's degree 6.8%

Bachelor's degree 13.3%

Graduate / professional 7.2%

Metric	%
HS diploma or higher	93.0%
Bachelor's or higher	20.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	13	6.3%
Kindergarten	16	7.7%
Elementary school	77	37.2%
High school	65	31.4%
College / grad school	36	17.4%

Employment

Industry of employment

Education & healthcare 26.6%

Agriculture & mining 21.6%

Manufacturing 16.7%

Retail trade 12.6%

Construction 6.8%

Other services 4.7%

Professional & management 3.3%

Public administration 2.5%

Transportation & utilities 2.2%

Information 1.1%

Finance & real estate 0.8%

Wholesale trade 0.5%

Arts, food & hospitality 0.5%

Occupation

Category	%
Management, business & arts	36.7%
Service	19.2%
Sales & office	15.1%
Natural resources & construction	15.1%
Production & transportation	14.0%

Employment type

Type	%
Private sector	65.8%
Government	13.7%
Self-employed	20.5%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	74.0%
Carpool	3.9%
Public transit	0.0%
Walk	3.0%
Other means	0.8%
Avg commute (minutes)	18.4

Poverty

All people 14.9%

Under 18 years 28.7%

18 and over 9.1%

Married-couple families 4.9%

Female-led households 0.0%

Income support

Source	% of households
Social Security	22.3%
Retirement income	11.3%
Supplemental Security	0.8%
Cash public assistance	3.8%
Food stamps / SNAP	6.4%

Health indicators

Condition	%
High blood pressure	36.5%
High cholesterol	34.3%
Heart disease	8.1%
Stroke	3.6%
Asthma	8.9%
Arthritis	28.3%
Kidney disease	3.4%
Pulmonary disease	7.3%
Cancer	8.7%

Behavior / access	%
Binge drinking	19.3%
No physical activity	25.2%
Less than 7 hrs sleep	29.4%
Fair or poor health	13.3%
Poor mental health	12.4%
Poor physical health	10.1%
No health insurance	8.9%
Visited doctor (checkup)	75.7%
Visited dentist	67.1%
Cholesterol screening	89.6%
Teeth loss	13.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	42	6.9%

Disability	%
Any disability	7.3%
Under 18	1.0%
18–64 years	5.0%
65 and over	31.2%

Health insurance coverage

Type	%
Private insurance	67.8%
Public insurance	33.6%
Uninsured under 19	15.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	778	95.6%
Spanish	29	3.7%
Other Indo-European	0	0.0%
Asian & Pacific Islander	29	3.7%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	814	100.0%
Born in same state	806	99.0%
Born in different state	621	76.3%
Foreign born	8	1.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
French	136	16.7%
Italian	116	14.3%
Arab	56	6.9%

Ancestry	Count	%
English	40	4.9%
Polish	4	0.5%

Technology access

Metric	% of households
Computer access	32.6%
Internet access	89.8%

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

Frequently asked questions

What ZIP codes does Diagonal, IA have?

Diagonal, IA has one ZIP code: 50845. Each ZIP code serves a distinct delivery area within the city and surrounding region.