Sister Bay ZIP Code List — Door County, WI

There is one unique ZIP code in Sister Bay, Wisconsin and it is 54234. Area code: 920.

ZIP codes

23.45

sq mi land

0.01

sq mi water

920

area code

Sister Bay, WI ZIP code map

About Sister Bay, WI

Sister Bay, located in Wisconsin, is a charming village nestled in Door County. Known for its scenic views and vibrant community, Sister Bay lies along the northern coast of the Door Peninsula. The village offers a perfect blend of natural beauty, recreational activities, and small-town charm that attracts visitors year-round.

Location & geography

Sister Bay is located approximately 22 miles northeast of Sturgeon Bay, the county seat of Door County, and around 45 miles from Green Bay. With a land area of 23.45 square miles and a water area of just 0.01 square miles, the village features picturesque landscapes and a serene atmosphere. The surrounding terrain in Door County is characterized by lush greenery, stunning waterfronts, and charming neighborhoods.

Community & economy

The community of Sister Bay thrives on its warm and friendly atmosphere, making it a welcoming place for both residents and visitors. The village's economy is primarily driven by tourism, with many local shops and eateries catering to seasonal visitors who are drawn to its natural beauty and recreational opportunities. Daily life in Sister Bay often revolves around outdoor activities such as boating, hiking, and enjoying local festivals.

Transportation

Sister Bay is served by Wisconsin Highway 57, which provides convenient access to the rest of Door County and beyond. The nearest major airport is Green Bay Austin Straubel International Airport, situated approximately 45 miles south, offering regional and connecting flights. The village has a limited public transit system primarily focused on seasonal transportation for tourists.

History

Sister Bay was established in the mid-1800s and quickly became a favored destination for vacationers seeking its beautiful surroundings. Key industries have included fishing, tourism, and hospitality, with the village developing a reputation for its lovely waterfront and outdoor recreational opportunities. Notable events, such as the annual Sister Bay MarinaFest, highlight the culture and community spirit of this unique village.

Did you know?

One surprising fact about Sister Bay is that it features one of the few waterfront marinas on the Door Peninsula. The village is also notable for its iconic sister bay, a natural inlet that provides stunning vistas and excellent boating options.

ZIP codes for Sister Bay, WI (1)

ZIP code	City	County	Map
54234	Sister Bay	Door	View map

Demographics & statistics

2,105

Population

59.1

Median age

$64,671

Median household income

$40,169

Per capita income

$381,300

Median home value

$1,136

Median monthly rent

66.6%

Home ownership

15.1%

Poverty rate

5.4%

Unemployment

1,957

Housing units

46.3%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

103

35–44

111

45–54

55–59

105

60–64

247

65–74

264

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	331	15.7%
18 and over	1,774	84.3%
65 and over	822	39.0%
Median age	59.1 years

Race & ethnicity

White 97%

Two or more races 1.3%

American Indian / Alaska Native 0.9%

Hispanic or Latino 0.8%

Group	Count	%
White	2,058	97%
Two or more races	28	1.3%
American Indian / Alaska Native	19	0.9%
Hispanic or Latino	16	0.8%

Household income

Under $10k 7.7%

$10k–$15k 3.2%

$15k–$25k 5.8%

$25k–$35k 7.2%

$35k–$50k 15.1%

$50k–$75k 23.2%

$75k–$100k 13.2%

$100k–$150k 16.0%

$150k–$200k 3.9%

$200k+ 4.8%

Range	% of households
Under $10k	7.7%
$10k–$15k	3.2%
$15k–$25k	5.8%
$25k–$35k	7.2%
$35k–$50k	15.1%
$50k–$75k	23.2%
$75k–$100k	13.2%
$100k–$150k	16.0%
$150k–$200k	3.9%
$200k+	4.8%
Median income	$64,671

Housing

Home values

$100k–$150k 1.1%

$150k–$200k 7.5%

$200k–$300k 29.3%

$300k–$500k 32.6%

$500k–$1M 18.4%

$1M+ 11.2%

Housing overview

Metric	Value
Median home value	$381,300
Median rent / month	$1,136
Owner occupied	66.6%
Renter occupied	33.4%
Vacant	54.6%
Single-family detached	57.0%
Large apartment buildings	8.8%
Mobile homes	0.1%
Median rooms	4.8
Avg household size (owned)	2.05

Year built

Era	%
2020 or later	0.0%
2010–2019	14.3%
2000–2009	15.1%
1990–1999	16.9%
1980–1989	15.2%
1970–1979	14.0%
1960–1969	6.1%
1950–1959	5.2%
1940–1949	5.3%
1939 or earlier	8.0%

Bedrooms

Size	% of units
No bedroom (studio)	4.2%
1 bedroom	6.2%
2 bedrooms	35.4%
3 bedrooms	38.5%
4 bedrooms	12.8%
5+ bedrooms	2.9%

Vehicles per household

Vehicles	% of households
No vehicle	4.4%
1 vehicle	37.3%
2 vehicles	34.3%
3 or more	24.0%

Heating fuel

Fuel type	%
Utility gas	4.3%
Electricity	31.4%
Propane / LP gas	56.3%
Fuel oil	2.9%
Wood	5.2%

Households & families

Household type	Count	%
Married-couple family	584	55.8%
Cohabiting couple	9	0.9%
Male householder, no spouse	170	16.2%
Female householder, no spouse	284	27.1%
Households with children under 18	174	16.6%
Households with seniors (65+)	574	54.8%
Average household size	1.97

Marital status

Status	Male	Female
Never married	21.3%	13.1%
Married	67.3%	59.4%
Separated	0.5%	0.3%
Widowed	3.8%	12.7%
Divorced	7.1%	14.5%

Education

Less than 9th grade 0.3%

Some HS, no diploma 0.4%

HS graduate 18.0%

Some college, no degree 25.9%

Associate's degree 9.1%

Bachelor's degree 25.7%

Graduate / professional 20.6%

Metric	%
HS diploma or higher	99.3%
Bachelor's or higher	46.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	12	4.9%
Kindergarten	57	23.5%
Elementary school	72	29.6%
High school	52	21.4%
College / grad school	50	20.6%

Employment

Industry of employment

Arts, food & hospitality 23.2%

Retail trade 17.8%

Professional & management 11.1%

Education & healthcare 10.7%

Construction 7.0%

Manufacturing 6.8%

Finance & real estate 6.6%

Other services 5.0%

Agriculture & mining 4.8%

Information 4.0%

Transportation & utilities 1.6%

Wholesale trade 1.1%

Public administration 0.3%

Occupation

Category	%
Management, business & arts	42.9%
Service	20.9%
Sales & office	23.0%
Natural resources & construction	8.4%
Production & transportation	4.9%

Employment type

Type	%
Private sector	74.3%
Government	8.5%
Self-employed	16.6%
Unpaid family workers	0.7%

Commute

Method	%
Drive alone	75.0%
Carpool	3.2%
Public transit	0.0%
Walk	5.9%
Other means	2.1%
Avg commute (minutes)	13.0

Poverty

All people 15.1%

Under 18 years 44.5%

18 and over 9.5%

Married-couple families 3.8%

Female-led households 60.9%

Income support

Source	% of households
Social Security	55.7%
Retirement income	41.9%
Supplemental Security	1.9%
Cash public assistance	1.3%
Food stamps / SNAP	9.2%

Health indicators

Condition	%
High blood pressure	38.0%
High cholesterol	40.4%
Heart disease	8.7%
Stroke	3.7%
Asthma	8.4%
Arthritis	31.8%
Kidney disease	3.7%
Pulmonary disease	6.4%
Cancer	11.9%

Behavior / access	%
Binge drinking	17.3%
No physical activity	19.1%
Less than 7 hrs sleep	25.0%
Fair or poor health	10.8%
Poor mental health	9.3%
Poor physical health	9.3%
No health insurance	6.9%
Visited doctor (checkup)	80.9%
Visited dentist	77.5%
Cholesterol screening	94.2%
Teeth loss	8.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	188	10.6%

Disability	%
Any disability	13.4%
Under 18	1.2%
18–64 years	11.7%
65 and over	20.6%

Health insurance coverage

Type	%
Private insurance	74.6%
Public insurance	54.7%
Uninsured under 19	4.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,957	93.0%
Spanish	11	0.6%
Other Indo-European	5	0.3%
Asian & Pacific Islander	6	0.3%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,049	97.3%
Born in same state	2,033	96.6%
Born in different state	1,122	53.3%
Foreign born	16	0.8%
Naturalized citizen	56	2.7%
Not a US citizen	26	46.4%

Ancestry

Ancestry	Count	%
Italian	218	10.4%
Polish	193	9.2%
French	138	6.6%
Arab	58	2.8%

Ancestry	Count	%
English	43	2%
Dutch	22	1%
German	15	0.7%

Technology access

Metric	% of households
Computer access	49.7%
Internet access	93.1%

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

Frequently asked questions

What is the ZIP code for Sister Bay, WI?

Sister Bay, WI has one ZIP code: 54234.

What is the main ZIP code for Sister Bay, WI?

The primary ZIP code for Sister Bay, WI is 54234. The city uses area code 920 for phone service.

What county is Sister Bay, WI in?

Sister Bay is located in Door County, Wisconsin.

How many ZIP codes are in Sister Bay, WI?

Sister Bay, WI has 1 ZIP code.

What ZIP code should I use for mailing packages to businesses located in downtown Sister Bay near the waterfront?

All addresses in downtown Sister Bay, including those near the harbor and Main Street, use the ZIP code 54234.

What is the ZIP code for Sister Bay's residential areas in Door County?

Sister Bay's residential neighborhoods throughout the entire village use ZIP code 54234.