Sibley ZIP Codes — Osceola County, IA

There is one unique ZIP code in Sibley, Iowa and it is 51249. Area code: 712.

ZIP codes

126.59

sq mi land

0.01

sq mi water

712

area code

Sibley, IA ZIP code map

About Sibley, IA

Sibley is a charming city located in the state of Iowa, serving as the county seat of Osceola County. This small town features a welcoming community atmosphere, making it a delightful place for both residents and visitors alike. With its rich history and connections to agriculture, Sibley offers a unique glimpse into Midwestern life.

Location & geography

Situated in northwestern Iowa, Sibley is conveniently located near the borders of Minnesota. The city is approximately 20 miles from the town of Sheldon to the east and about 25 miles from the city of Worthington, Minnesota, to the north. The total land area of Sibley is 126.59 square miles, with only a small water area of 0.01 square miles, contributing to its predominantly rural character.

Community & economy

Sibley is known for its friendly community and strong agricultural roots, with local farms and rural businesses playing a significant role in daily life. The city supports a variety of industries, including manufacturing and service-oriented businesses, which provide employment opportunities for its residents. Daily life in Sibley revolves around community events, local schools, and recreational activities that foster a sense of belonging and togetherness.

Transportation

Sibley is accessible via U.S. Highway 60, which connects the town to neighboring cities and the interstate system. For air travel, the nearest named airport is the Sioux Falls Regional Airport, located about 60 miles to the northwest. Public transportation options may be limited, making personal vehicles the primary mode of transit.

History

Sibley was founded in the late 19th century and has grown steadily due to its fertile farmland and strategic location. Over the years, it has developed a diverse economy, with agriculture and manufacturing serving as key industries. Notable events in the city's history include the establishment of the Osceola County Fair, which celebrates local traditions and brings the community together.

Did you know?

One surprising fact about Sibley is that it hosts the annual Great American Bike Festival, attracting cycling enthusiasts from across the region. Additionally, the city is home to the historic Sibley Depot, a prominent landmark that reflects its railroad heritage.

ZIP codes for Sibley, IA (1)

ZIP code	City	County	Map
51249	Sibley	Osceola	View map

Demographics & statistics

3,388

Population

42.3

Median age

$67,083

Median household income

$36,062

Per capita income

$143,300

Median home value

$727

Median monthly rent

73.4%

Home ownership

16.1%

Poverty rate

6.0%

Unemployment

1,147

Housing units

15.1%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

147

10–14

136

124

15–19

115

20–24

196

25–34

181

197

35–44

181

202

45–54

185

121

55–59

111

114

60–64

104

197

65–74

181

115

75–84

106

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	772	22.8%
18 and over	2,616	77.2%
65 and over	767	22.6%
Median age	42.3 years

Race & ethnicity

White 87.3%

Hispanic or Latino 4.3%

Other race 2.5%

Two or more races 2.3%

Asian 1.8%

Black or African American 1.4%

American Indian / Alaska Native 0.5%

Group	Count	%
White	3,091	87.3%
Hispanic or Latino	153	4.3%
Other race	90	2.5%
Two or more races	81	2.3%
Asian	62	1.8%
Black or African American	48	1.4%
American Indian / Alaska Native	16	0.5%

Household income

Under $10k 3.4%

$10k–$15k 6.3%

$15k–$25k 8.2%

$25k–$35k 7.1%

$35k–$50k 12.6%

$50k–$75k 19.5%

$75k–$100k 13.8%

$100k–$150k 15.9%

$150k–$200k 5.6%

$200k+ 7.6%

Range	% of households
Under $10k	3.4%
$10k–$15k	6.3%
$15k–$25k	8.2%
$25k–$35k	7.1%
$35k–$50k	12.6%
$50k–$75k	19.5%
$75k–$100k	13.8%
$100k–$150k	15.9%
$150k–$200k	5.6%
$200k+	7.6%
Median income	$67,083

Housing

Home values

Under $50k 11.4%

$50k–$100k 23.6%

$100k–$150k 16.2%

$150k–$200k 14.2%

$200k–$300k 20.4%

$300k–$500k 8.4%

$500k–$1M 5.9%

Housing overview

Metric	Value
Median home value	$143,300
Median rent / month	$727
Owner occupied	73.4%
Renter occupied	26.6%
Vacant	7.9%
Single-family detached	85.3%
Large apartment buildings	0.7%
Mobile homes	0.5%
Median rooms	6.4
Avg household size (owned)	2.43

Year built

Era	%
2020 or later	0.0%
2010–2019	2.1%
2000–2009	4.8%
1990–1999	7.0%
1980–1989	4.1%
1970–1979	12.3%
1960–1969	15.1%
1950–1959	17.8%
1940–1949	3.3%
1939 or earlier	33.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.5%
1 bedroom	6.3%
2 bedrooms	28.2%
3 bedrooms	34.1%
4 bedrooms	24.8%
5+ bedrooms	6.1%

Vehicles per household

Vehicles	% of households
No vehicle	5.0%
1 vehicle	26.9%
2 vehicles	33.4%
3 or more	34.7%

Heating fuel

Fuel type	%
Utility gas	60.1%
Electricity	23.1%
Propane / LP gas	15.6%
Fuel oil	0.1%

Households & families

Household type	Count	%
Married-couple family	622	44.4%
Cohabiting couple	114	8.1%
Male householder, no spouse	304	21.7%
Female householder, no spouse	360	25.7%
Households with children under 18	317	22.6%
Households with seniors (65+)	496	35.4%
Average household size	2.34

Marital status

Status	Male	Female
Never married	35.3%	21.1%
Married	50.6%	45.9%
Separated	1.8%	3.3%
Widowed	3.8%	15.2%
Divorced	8.5%	14.5%

Education

Less than 9th grade 4.5%

Some HS, no diploma 6.8%

HS graduate 39.2%

Some college, no degree 19.2%

Associate's degree 15.2%

Bachelor's degree 8.6%

Graduate / professional 6.5%

Metric	%
HS diploma or higher	88.7%
Bachelor's or higher	15.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	55	7.3%
Kindergarten	18	2.4%
Elementary school	350	46.5%
High school	200	26.6%
College / grad school	129	17.2%

Employment

Industry of employment

Education & healthcare 22.4%

Agriculture & mining 16.5%

Manufacturing 14.7%

Retail trade 8.1%

Construction 8.0%

Other services 6.2%

Professional & management 6.0%

Transportation & utilities 5.3%

Wholesale trade 4.6%

Public administration 3.4%

Finance & real estate 2.1%

Arts, food & hospitality 1.7%

Information 1.0%

Occupation

Category	%
Management, business & arts	29.9%
Service	12.4%
Sales & office	15.5%
Natural resources & construction	20.8%
Production & transportation	21.4%

Employment type

Type	%
Private sector	79.4%
Government	7.6%
Self-employed	13.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	76.3%
Carpool	11.2%
Public transit	0.1%
Walk	4.3%
Other means	1.5%
Avg commute (minutes)	21.1

Poverty

All people 16.1%

Under 18 years 32.1%

18 and over 11.4%

Married-couple families 0.5%

Female-led households 54.7%

Income support

Source	% of households
Social Security	37.8%
Retirement income	25.0%
Supplemental Security	6.1%
Cash public assistance	2.6%
Food stamps / SNAP	9.6%

Health indicators

Condition	%
High blood pressure	35.6%
High cholesterol	34.6%
Heart disease	7.8%
Stroke	3.6%
Asthma	9.2%
Arthritis	27.9%
Kidney disease	3.3%
Pulmonary disease	7.5%
Cancer	8.2%

Behavior / access	%
Binge drinking	19.2%
No physical activity	26.5%
Less than 7 hrs sleep	29.3%
Fair or poor health	14.3%
Poor mental health	13.0%
Poor physical health	10.4%
No health insurance	11.1%
Visited doctor (checkup)	75.9%
Visited dentist	65.9%
Cholesterol screening	89.1%
Teeth loss	14.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	228	8.7%

Disability	%
Any disability	11.2%
Under 18	1.4%
18–64 years	7.8%
65 and over	31.1%

Health insurance coverage

Type	%
Private insurance	66.1%
Public insurance	43.9%
Uninsured under 19	4.3%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,204	94.6%
Spanish	173	5.4%
Other Indo-European	133	4.2%
Asian & Pacific Islander	14	0.4%
Other languages	26	0.8%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,217	95.0%
Born in same state	3,207	94.7%
Born in different state	2,092	61.7%
Foreign born	10	0.3%
Naturalized citizen	171	5.0%
Not a US citizen	23	13.5%

Ancestry

Ancestry	Count	%
English	581	17.1%
Italian	315	9.3%
Polish	232	6.8%
Arab	186	5.5%

Ancestry	Count	%
German	107	3.2%
French	63	1.9%
Dutch	31	0.9%

Technology access

Metric	% of households
Computer access	41.3%
Internet access	93.7%

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

Frequently asked questions

What ZIP codes does Sibley, IA have?

Sibley, IA has one ZIP code: 51249. Each ZIP code serves a distinct delivery area within the city and surrounding region.