54234 ZIP Code — Sister Bay, WI

Door County, Wisconsin

ZIP code 54234 is located in Sister Bay, Wisconsin, within Door County. It covers approximately 23.45 square miles and serves a population of 2,105 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 920.

About ZIP code 54234

The housing stock consists of a mix of housing types. Most homes were built in the 1990s, giving the area an established character. Median home value is $381,300. Owner-occupancy sits near the national average at 67%.

Median household income is $64,671. 56% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with arts, entertainment, and food service as the leading industry. The average commute of 13 minutes is near the national average.

Educational attainment is high — 46% of residents hold a bachelor's degree or higher, well above the national average of 33%.

2,105
population
23.45
sq mi land
Standard
ZIP type
Central (CT)
timezone
54234 ZIP code map
Cities in ZIP code 54234

Below are the cities the US Postal Service accepts for ZIP code 54234. Using any city not on this list may result in mail delivery delays.

City Status
Sister Bay Preferred
Nearby ZIP codes
54210 Ellison Bay (5.6 mi) 54202 Baileys Harbor (7.1 mi) 54212 Fish Creek (8.2 mi) 54209 Egg Harbor (14.1 mi) 54246 Washington Island (16.3 mi)
Demographics updated 05/2026
Population
Total population 2,105
Population density 90 / sq mi
State FIPS 55
County FIPS 029
Geography
Land area 23.45 sq mi
Water area 0.01 sq mi
Latitude 45.1845
Longitude -87.1047
Timezone Central (CT)
Area code 920
Total population by age
Gender
Race & ethnicity
Economics updated 05/2026
Household income
Income range This ZIP County avg State avg
Under $50k 50.3% 39.3% 39.4%
$50k – $100k 34.3% 35.2% 33.0%
$100k – $200k 13.4% 20.4% 22.4%
Over $200k 2.0% 5.1% 5.2%

Demographics & statistics

2,105
Population
90
People per sq mi
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
71
Under 5
77
36
5–9
39
35
10–14
38
32
15–19
34
30
20–24
32
61
25–34
65
103
35–44
111
63
45–54
68
98
55–59
105
89
60–64
96
247
65–74
264
86
75–84
92
64
85+
69
← Male
Female →

Age summary

GroupCount%
Under 1833115.7%
18 and over1,77484.3%
65 and over82239.0%
Median age59.1 years

Race & ethnicity

White 97%
Two or more races 1.3%
American Indian / Alaska Native 0.9%
Hispanic or Latino 0.8%
GroupCount%
White2,05897%
Two or more races281.3%
American Indian / Alaska Native190.9%
Hispanic or Latino160.8%

Household income

Income range This ZIP County avg State avg
Under $50k 50.3% 39.3% 39.4%
$50k – $100k 34.3% 35.2% 33.0%
$100k – $200k 13.4% 20.4% 22.4%
Over $200k 2.0% 5.1% 5.2%
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 $10k7.7%
$10k–$15k3.2%
$15k–$25k5.8%
$25k–$35k7.2%
$35k–$50k15.1%
$50k–$75k23.2%
$75k–$100k13.2%
$100k–$150k16.0%
$150k–$200k3.9%
$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

MetricValue
Median home value$381,300
Median rent / month$1,136
Owner occupied66.6%
Renter occupied33.4%
Vacant54.6%
Single-family detached57.0%
Large apartment buildings8.8%
Mobile homes0.1%
Median rooms4.8
Avg household size (owned)2.05

Year built

Era%
2020 or later0.0%
2010–201914.3%
2000–200915.1%
1990–199916.9%
1980–198915.2%
1970–197914.0%
1960–19696.1%
1950–19595.2%
1940–19495.3%
1939 or earlier8.0%

Bedrooms

Size% of units
No bedroom (studio)4.2%
1 bedroom6.2%
2 bedrooms35.4%
3 bedrooms38.5%
4 bedrooms12.8%
5+ bedrooms2.9%

Vehicles per household

Vehicles% of households
No vehicle4.4%
1 vehicle37.3%
2 vehicles34.3%
3 or more24.0%

Heating fuel

Fuel type%
Utility gas4.3%
Electricity31.4%
Propane / LP gas56.3%
Fuel oil2.9%
Wood5.2%

Households & families

Household typeCount%
Married-couple family58455.8%
Cohabiting couple90.9%
Male householder, no spouse17016.2%
Female householder, no spouse28427.1%
Households with children under 1817416.6%
Households with seniors (65+)57454.8%
Average household size1.97

Marital status

StatusMaleFemale
Never married21.3%13.1%
Married67.3%59.4%
Separated0.5%0.3%
Widowed3.8%12.7%
Divorced7.1%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 higher99.3%
Bachelor's or higher46.3%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool124.9%
Kindergarten5723.5%
Elementary school7229.6%
High school5221.4%
College / grad school5020.6%

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 & arts42.9%
Service20.9%
Sales & office23.0%
Natural resources & construction8.4%
Production & transportation4.9%

Employment type

Type%
Private sector74.3%
Government8.5%
Self-employed16.6%
Unpaid family workers0.7%

Commute

Method%
Drive alone75.0%
Carpool3.2%
Public transit0.0%
Walk5.9%
Work from home13.8%
Other means2.1%
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 Security55.7%
Retirement income41.9%
Supplemental Security1.9%
Cash public assistance1.3%
Food stamps / SNAP9.2%

Health indicators

Condition%
Obesity28.0%
High blood pressure38.0%
High cholesterol40.4%
Diabetes10.6%
Heart disease8.7%
Stroke3.7%
Asthma8.4%
Arthritis31.8%
Kidney disease3.7%
Pulmonary disease6.4%
Cancer11.9%
Behavior / access%
Smoking10.1%
Binge drinking17.3%
No physical activity19.1%
Less than 7 hrs sleep25.0%
Depression16.2%
Fair or poor health10.8%
Poor mental health9.3%
Poor physical health9.3%
No health insurance6.9%
Visited doctor (checkup)80.9%
Visited dentist77.5%
Cholesterol screening94.2%
Teeth loss8.1%

Veterans & disability

VeteransCount%
Civilian veterans18810.6%
Disability%
Any disability13.4%
Under 181.2%
18–64 years11.7%
65 and over20.6%

Health insurance coverage

Type%
Private insurance74.6%
Public insurance54.7%
No insurance4.3%
Uninsured under 194.5%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only1,95793.0%
Spanish110.6%
Other Indo-European50.3%
Asian & Pacific Islander60.3%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)2,04997.3%
Born in same state2,03396.6%
Born in different state1,12253.3%
Foreign born160.8%
Naturalized citizen562.7%
Not a US citizen2646.4%

Ancestry

AncestryCount%
Italian21810.4%
Polish1939.2%
French1386.6%
Arab582.8%
AncestryCount%
English432%
Dutch221%
German150.7%

Technology access

Metric% of households
Computer access49.7%
Internet access93.1%

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

Frequently asked questions about ZIP code 54234

What city is ZIP code 54234 in?

ZIP code 54234 is primarily assigned to Sister Bay, Wisconsin.

What county is ZIP code 54234 in?

ZIP code 54234 falls within Door County, Wisconsin.

Does ZIP code 54234 have an older population?

39% of residents in ZIP code 54234 are 65 or older, above the national average of ~17%.

Does ZIP code 54234 have a large retiree population?

56% of households in ZIP code 54234 receive Social Security income, suggesting a significant retiree or disability population.

What is the poverty rate in ZIP code 54234?

15% of residents in ZIP code 54234 live below the poverty line, above the national average.

How educated is the population of ZIP code 54234?

46% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

What timezone is ZIP code 54234 in?

ZIP code 54234 observes the CST timezone.

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