Griswold ZIP Codes — Cass County, IA

There is one unique ZIP code in Griswold, Iowa and it is 51535. Area code: 712.

ZIP codes

135.33

sq mi land

0.01

sq mi water

712

area code

Griswold, IA ZIP code map

About Griswold, IA

Griswold is a charming city located in Iowa, nestled within Cass County. Known for its close-knit community and rural character, Griswold boasts a unique small-town atmosphere. Visitors and residents alike appreciate the welcoming spirit of the city and the variety of local amenities available.

Location & geography

Griswold is situated in Southwestern Iowa, approximately 16 miles east of the city of Atlantic and about 30 miles northwest of the city of Creston. The city covers a land area of 135.33 square miles, with a minimal water area of just 0.01 square miles. The terrain surrounding Griswold is predominantly flat, characterized by the fertile farmland that is typical of the region.

Community & economy

Griswold has a friendly and inclusive character, where community events bring residents together throughout the year. The local economy is driven by agriculture and small businesses, contributing to a vibrant daily life for inhabitants. In this city, one can often find residents engaging in outdoor activities or participating in local festivals that celebrate their unique heritage.

Transportation

Access to Griswold is convenient, with nearby access to U.S. Route 6, which runs east to west, connecting the city to other regional areas. The city is serviced by the area code 712, which covers much of western Iowa. For air travel, the closest airports are located in Atlantic and Council Bluffs, providing essential connectivity for residents and visitors.

History

Griswold was founded in the late 19th century and quickly grew as a hub for local agriculture and industry. The city played a vital role in the development of rail transportation in the region, facilitating trade and commerce. Over the years, Griswold has remained a significant location for farming and small businesses, showcasing a rich history of community resilience.

Did you know?

A little-known fact about Griswold is that it has a picturesque train depot building, which adds a charm to the town's historical landscape. Additionally, the city's close-knit nature fosters a range of annual events celebrating local culture and traditions.

ZIP codes for Griswold, IA (1)

ZIP code	City	County	Map
51535	Griswold	Cass	View map

Demographics & statistics

1,730

Population

48.4

Median age

$81,326

Median household income

$43,514

Per capita income

$128,300

Median home value

$900

Median monthly rent

85.3%

Home ownership

6.0%

Poverty rate

1.2%

Unemployment

741

Housing units

18.1%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

147

45–54

123

55–59

100

60–64

117

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	397	22.9%
18 and over	1,333	77.1%
65 and over	422	24.4%
Median age	48.4 years

Race & ethnicity

White 93.6%

Two or more races 3.8%

Hispanic or Latino 1.4%

Other race 1.3%

Group	Count	%
White	1,642	93.6%
Two or more races	66	3.8%
Hispanic or Latino	25	1.4%
Other race	22	1.3%

Household income

Under $10k 1.8%

$10k–$15k 1.8%

$15k–$25k 5.5%

$25k–$35k 8.6%

$35k–$50k 8.9%

$50k–$75k 17.9%

$75k–$100k 21.5%

$100k–$150k 14.1%

$150k–$200k 5.8%

$200k+ 14.0%

Range	% of households
Under $10k	1.8%
$10k–$15k	1.8%
$15k–$25k	5.5%
$25k–$35k	8.6%
$35k–$50k	8.9%
$50k–$75k	17.9%
$75k–$100k	21.5%
$100k–$150k	14.1%
$150k–$200k	5.8%
$200k+	14.0%
Median income	$81,326

Housing

Home values

Under $50k 5.7%

$50k–$100k 36.4%

$100k–$150k 18.0%

$150k–$200k 8.5%

$200k–$300k 9.3%

$300k–$500k 19.5%

$500k–$1M 2.3%

$1M+ 0.3%

Housing overview

Metric	Value
Median home value	$128,300
Median rent / month	$900
Owner occupied	85.3%
Renter occupied	14.7%
Vacant	14.9%
Single-family detached	93.5%
Large apartment buildings	0.0%
Mobile homes	0.8%
Median rooms	6.6
Avg household size (owned)	2.42

Year built

Era	%
2020 or later	0.0%
2010–2019	5.7%
2000–2009	3.7%
1990–1999	6.4%
1980–1989	5.8%
1970–1979	8.1%
1960–1969	5.3%
1950–1959	9.1%
1940–1949	4.1%
1939 or earlier	51.8%

Bedrooms

Size	% of units
No bedroom (studio)	0.5%
1 bedroom	6.1%
2 bedrooms	25.1%
3 bedrooms	45.7%
4 bedrooms	20.7%
5+ bedrooms	1.9%

Vehicles per household

Vehicles	% of households
No vehicle	1.1%
1 vehicle	18.2%
2 vehicles	35.0%
3 or more	45.8%

Heating fuel

Fuel type	%
Utility gas	43.1%
Electricity	27.0%
Propane / LP gas	29.0%
No fuel used	0.4%

Households & families

Household type	Count	%
Married-couple family	412	57.1%
Cohabiting couple	47	6.5%
Male householder, no spouse	131	18.2%
Female householder, no spouse	131	18.2%
Households with children under 18	183	25.4%
Households with seniors (65+)	279	38.7%
Average household size	2.35

Marital status

Status	Male	Female
Never married	27.9%	18.4%
Married	56.5%	60.8%
Separated	1.2%	0.0%
Widowed	3.5%	14.0%
Divorced	11.0%	6.7%

Education

Less than 9th grade 2.9%

Some HS, no diploma 4.0%

HS graduate 35.9%

Some college, no degree 25.8%

Associate's degree 13.3%

Bachelor's degree 9.9%

Graduate / professional 8.2%

Metric	%
HS diploma or higher	93.1%
Bachelor's or higher	18.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	62	15.7%
Kindergarten	27	6.9%
Elementary school	135	34.3%
High school	113	28.7%
College / grad school	57	14.5%

Employment

Industry of employment

Education & healthcare 22.9%

Retail trade 13.4%

Agriculture & mining 12.9%

Transportation & utilities 9.7%

Construction 9.3%

Finance & real estate 6.4%

Manufacturing 6.3%

Professional & management 4.8%

Arts, food & hospitality 4.8%

Other services 4.0%

Wholesale trade 2.2%

Information 1.7%

Public administration 1.5%

Occupation

Category	%
Management, business & arts	33.4%
Service	14.9%
Sales & office	16.4%
Natural resources & construction	14.8%
Production & transportation	20.3%

Employment type

Type	%
Private sector	74.1%
Government	10.9%
Self-employed	14.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	73.5%
Carpool	9.1%
Public transit	0.0%
Walk	3.9%
Other means	1.3%
Avg commute (minutes)	25.0

Poverty

All people 6.0%

Under 18 years 11.9%

18 and over 4.2%

Married-couple families 1.0%

Female-led households 22.1%

Income support

Source	% of households
Social Security	43.6%
Retirement income	22.7%
Supplemental Security	2.8%
Cash public assistance	0.0%
Food stamps / SNAP	3.6%

Health indicators

Condition	%
High blood pressure	37.1%
High cholesterol	37.0%
Heart disease	8.0%
Stroke	3.6%
Asthma	9.2%
Arthritis	28.3%
Kidney disease	3.3%
Pulmonary disease	7.7%
Cancer	8.4%

Behavior / access	%
Binge drinking	19.9%
No physical activity	26.2%
Less than 7 hrs sleep	31.0%
Fair or poor health	13.7%
Poor mental health	12.8%
Poor physical health	10.3%
No health insurance	9.4%
Visited doctor (checkup)	74.5%
Visited dentist	63.4%
Cholesterol screening	89.9%
Teeth loss	13.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	123	9.2%

Disability	%
Any disability	7.4%
Under 18	0.0%
18–64 years	6.8%
65 and over	16.5%

Health insurance coverage

Type	%
Private insurance	75.2%
Public insurance	40.3%
Uninsured under 19	1.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,657	95.8%
Spanish	22	1.3%
Other Indo-European	13	0.8%
Asian & Pacific Islander	0	0.0%
Other languages	9	0.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,697	98.1%
Born in same state	1,697	98.1%
Born in different state	1,146	66.2%
Foreign born	0	0.0%
Naturalized citizen	33	1.9%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
French	275	15.9%
Italian	191	11%
Arab	127	7.3%
Dutch	117	6.8%

Ancestry	Count	%
Polish	37	2.1%
English	23	1.3%
German	1	0.1%

Technology access

Metric	% of households
Computer access	41.7%
Internet access	90.6%

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

Frequently asked questions

What ZIP codes does Griswold, IA have?

Griswold, IA has one ZIP code: 51535. Each ZIP code serves a distinct delivery area within the city and surrounding region.