Auburn ZIP Codes — Sac County, IA

There is one unique ZIP code in Auburn, Iowa and it is 51433. Area code: 712.

ZIP codes

56.80

sq mi land

0.40

sq mi water

712

area code

Auburn, IA ZIP code map

About Auburn, IA

Auburn, Iowa, is a small but vibrant city located in the heart of Sac County. It offers a charming rural atmosphere combined with the amenities necessary for daily life. With a close-knit community and a picturesque landscape, Auburn attracts those looking for a peaceful place to call home.

Location & geography

Auburn is situated in Northwest Iowa, surrounded by the rolling hills and open fields characteristic of the region. Nearby cities include Sac City, which is approximately 12 miles to the northeast, and Lake View, located around 12 miles to the southeast. The city covers a land area of 56.80 square miles, with a minor water area of 0.40 square miles.

Community & economy

The community of Auburn has a friendly and welcoming character, with residents often engaging in local events and gatherings. Agriculture plays a significant role in the local economy, with many families involved in farming and related industries. Daily life in Auburn is typically tranquil, with access to essential services and recreational opportunities for all ages.

Transportation

Auburn is accessible via several state highways, with Highway 20 running nearby and providing a critical connection to other regional hubs. The nearest airport for commercial flights is located in Sioux City, about 70 miles to the northwest. Local transportation options are primarily car-dependent, with a focus on maintaining the rural charm of the area.

History

Auburn was founded in the late 19th century, and it has a rich agricultural heritage that has influenced its development over the years. Historically, the city served as a trading hub for farmers in the surrounding area and has maintained its agricultural roots into the present day. Notable events include the annual local harvest festivals that celebrate the community’s farming tradition.

Did you know?

A little-known fact about Auburn is that despite its small size, it holds an annual community event that brings locals and visitors together to celebrate the area's agricultural heritage. The city is also recognized for its beautiful landscapes, offering numerous opportunities for outdoor recreation.

ZIP codes for Auburn, IA (1)

ZIP code	City	County	Map
51433	Auburn	Sac	View map

Demographics & statistics

606

Population

32.8

Median age

$61,438

Median household income

$27,317

Per capita income

$76,100

Median home value

$724

Median monthly rent

57.2%

Home ownership

17.7%

Poverty rate

0.8%

Unemployment

144

Housing units

11.0%

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	180	29.7%
18 and over	426	70.3%
65 and over	62	10.2%
Median age	32.8 years

Race & ethnicity

White 99.2%

Black or African American 0.5%

Two or more races 0.3%

Group	Count	%
White	601	99.2%
Black or African American	3	0.5%
Two or more races	2	0.3%

Household income

Under $10k 1.9%

$10k–$15k 2.8%

$15k–$25k 3.7%

$25k–$35k 6.0%

$35k–$50k 24.7%

$50k–$75k 17.2%

$75k–$100k 27.4%

$100k–$150k 11.6%

$150k–$200k 2.3%

$200k+ 2.3%

Range	% of households
Under $10k	1.9%
$10k–$15k	2.8%
$15k–$25k	3.7%
$25k–$35k	6.0%
$35k–$50k	24.7%
$50k–$75k	17.2%
$75k–$100k	27.4%
$100k–$150k	11.6%
$150k–$200k	2.3%
$200k+	2.3%
Median income	$61,438

Housing

Home values

Under $50k 12.2%

$50k–$100k 52.0%

$100k–$150k 14.6%

$150k–$200k 14.6%

$200k–$300k 5.7%

$500k–$1M 0.8%

Housing overview

Metric	Value
Median home value	$76,100
Median rent / month	$724
Owner occupied	57.2%
Renter occupied	42.8%
Vacant	8.9%
Single-family detached	95.8%
Large apartment buildings	0.0%
Mobile homes	1.7%
Median rooms	6.0
Avg household size (owned)	2.62

Year built

Era	%
2020 or later	0.0%
2010–2019	0.4%
2000–2009	2.1%
1990–1999	1.3%
1980–1989	0.8%
1970–1979	6.8%
1960–1969	3.8%
1950–1959	22.5%
1940–1949	3.8%
1939 or earlier	58.5%

Bedrooms

Size	% of units
No bedroom (studio)	10.2%
1 bedroom	5.9%
2 bedrooms	11.0%
3 bedrooms	48.3%
4 bedrooms	22.5%
5+ bedrooms	2.1%

Vehicles per household

Vehicles	% of households
No vehicle	2.3%
1 vehicle	18.1%
2 vehicles	40.9%
3 or more	38.6%

Heating fuel

Fuel type	%
Utility gas	3.3%
Electricity	16.3%
Propane / LP gas	79.1%
Fuel oil	1.4%

Households & families

Household type	Count	%
Married-couple family	136	63.3%
Cohabiting couple	25	11.6%
Male householder, no spouse	22	10.2%
Female householder, no spouse	32	14.9%
Households with children under 18	103	47.9%
Households with seniors (65+)	46	21.4%
Average household size	2.82

Marital status

Status	Male	Female
Never married	18.8%	22.5%
Married	71.0%	48.3%
Separated	0.0%	0.7%
Widowed	2.4%	2.2%
Divorced	7.7%	26.2%

Education

Less than 9th grade 1.2%

Some HS, no diploma 2.2%

HS graduate 42.3%

Some college, no degree 28.9%

Associate's degree 14.4%

Bachelor's degree 6.7%

Graduate / professional 4.3%

Metric	%
HS diploma or higher	96.7%
Bachelor's or higher	11.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	11	6.6%
Kindergarten	4	2.4%
Elementary school	90	53.9%
High school	51	30.5%
College / grad school	11	6.6%

Employment

Industry of employment

Manufacturing 23.6%

Education & healthcare 16.0%

Transportation & utilities 11.7%

Retail trade 11.4%

Construction 10.3%

Arts, food & hospitality 10.3%

Agriculture & mining 8.7%

Wholesale trade 2.7%

Other services 1.9%

Public administration 1.6%

Finance & real estate 1.1%

Professional & management 0.8%

Occupation

Category	%
Management, business & arts	26.3%
Service	16.3%
Sales & office	13.6%
Natural resources & construction	10.8%
Production & transportation	33.1%

Employment type

Type	%
Private sector	79.1%
Government	10.8%
Self-employed	10.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	79.9%
Carpool	6.5%
Public transit	0.0%
Walk	1.6%
Other means	6.5%
Avg commute (minutes)	30.5

Poverty

All people 17.7%

Under 18 years 40.0%

18 and over 8.2%

Married-couple families 0.7%

Female-led households 0.0%

Income support

Source	% of households
Social Security	19.5%
Retirement income	12.6%
Supplemental Security	6.5%
Cash public assistance	0.5%
Food stamps / SNAP	9.3%

Health indicators

Condition	%
High blood pressure	35.8%
High cholesterol	33.8%
Heart disease	7.3%
Stroke	3.2%
Asthma	9.1%
Arthritis	26.3%
Kidney disease	3.0%
Pulmonary disease	7.0%
Cancer	7.8%

Behavior / access	%
Binge drinking	21.2%
No physical activity	24.3%
Less than 7 hrs sleep	30.2%
Fair or poor health	12.6%
Poor mental health	12.9%
Poor physical health	9.7%
No health insurance	8.6%
Visited doctor (checkup)	75.6%
Visited dentist	66.9%
Cholesterol screening	89.3%
Teeth loss	12.7%

Veterans & disability

Veterans	Count	%
Civilian veterans	11	2.6%

Disability	%
Any disability	5.1%
Under 18	0.0%
18–64 years	2.5%
65 and over	35.5%

Health insurance coverage

Type	%
Private insurance	57.1%
Public insurance	47.7%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	571	94.2%
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)	606	100.0%
Born in same state	606	100.0%
Born in different state	510	84.2%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
English	140	23.1%
Italian	60	9.9%
Arab	31	5.1%

Ancestry	Count	%
French	10	1.7%
Dutch	4	0.7%
Polish	2	0.3%

Technology access

Metric	% of households
Computer access	35.5%
Internet access	93.5%

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

Frequently asked questions

What ZIP codes does Auburn, IA have?

Auburn, IA has one ZIP code: 51433. Each ZIP code serves a distinct delivery area within the city and surrounding region.