Harsens Island ZIP Code List — Saint Clair County, MI

There is one unique ZIP code in Harsens Island, Michigan and it is 48028. Area code: 810.

ZIP codes

17.76

sq mi land

14.64

sq mi water

810

area code

Harsens Island, MI ZIP code map

About Harsens Island, MI

Harsens Island, located in Michigan, is a small and tranquil island community within Saint Clair County. This picturesque island is known for its natural beauty and strong sense of community, boasting stunning waterfront views and abundant wildlife. Its serene environment makes it a perfect getaway for those looking to relax away from the hustle and bustle of city life.

Location & geography

Geographically, Harsens Island is situated in the St. Clair River, approximately 10 miles south of Port Huron and about 40 miles northeast of Detroit. It covers a total land area of 17.76 square miles and features 14.64 square miles of water, making it a haven for water enthusiasts and nature lovers. The surrounding waters provide opportunities for boating, fishing, and other outdoor activities, further enhancing the island's charm.

Community & economy

The character of Harsens Island is defined by a closely-knit, welcoming community that enjoys a laid-back lifestyle. The island's economy is primarily supported by tourism, recreational activities, and seasonal residents who flock to the area for summer vacations. Daily life on the island often includes outdoor activities, social gatherings, and community events that foster a tight sense of belonging among its residents.

Transportation

Transportation on Harsens Island mainly relies on ferries, as there are no bridges connecting it to the mainland. Residents and visitors often access the island via ferry services from nearby locations such as Algonac. The nearest named airports are located in Port Huron and Detroit, providing broader connectivity for travelers.

History

Harsens Island has a rich history, originally inhabited by Native American tribes and later settled by European farmers in the 19th century. The island's key industries historically revolved around agriculture and fishing, which remain significant today. A notable event in its history is the establishment of the Harsens Island Light in the late 1800s, which continues to serve as a historic landmark.

Did you know?

One surprising fact about Harsens Island is that it is one of the largest islands in the St. Clair River. Additionally, the island boasts a unique blend of recreational and residential properties that attract a diverse group of people throughout the year.

ZIP codes for Harsens Island, MI (1)

ZIP code	City	County	Map
48028	Harsens Island	Saint Clair	View map

Demographics & statistics

961

Population

66.0

Median age

$98,523

Median household income

$66,358

Per capita income

$334,300

Median home value

Median monthly rent

96.9%

Home ownership

6.7%

Poverty rate

0.0%

Unemployment

1,563

Housing units

29.4%

Bachelor's or higher

Age distribution

Male Female

Under 5

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

168

65–74

132

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	26	2.7%
18 and over	935	97.3%
65 and over	518	53.9%
Median age	66.0 years

Race & ethnicity

White 98.7%

Two or more races 0.8%

Hispanic or Latino 0.5%

Group	Count	%
White	953	98.7%
Two or more races	8	0.8%
Hispanic or Latino	5	0.5%

Household income

Under $10k 2.5%

$10k–$15k 1.4%

$15k–$25k 2.5%

$25k–$35k 7.0%

$35k–$50k 12.2%

$50k–$75k 12.0%

$75k–$100k 13.7%

$100k–$150k 25.0%

$150k–$200k 8.7%

$200k+ 15.1%

Range	% of households
Under $10k	2.5%
$10k–$15k	1.4%
$15k–$25k	2.5%
$25k–$35k	7.0%
$35k–$50k	12.2%
$50k–$75k	12.0%
$75k–$100k	13.7%
$100k–$150k	25.0%
$150k–$200k	8.7%
$200k+	15.1%
Median income	$98,523

Housing

Home values

$50k–$100k 2.8%

$100k–$150k 5.2%

$150k–$200k 16.6%

$200k–$300k 17.4%

$300k–$500k 36.1%

$500k–$1M 21.0%

$1M+ 1.0%

Housing overview

Metric	Value
Median home value	$334,300
Median rent / month	$0
Owner occupied	96.9%
Renter occupied	3.1%
Vacant	67.3%
Single-family detached	96.6%
Large apartment buildings	0.0%
Mobile homes	1.1%
Median rooms	5.9
Avg household size (owned)	1.85

Year built

Era	%
2020 or later	0.0%
2010–2019	1.6%
2000–2009	8.9%
1990–1999	11.1%
1980–1989	9.6%
1970–1979	12.5%
1960–1969	9.5%
1950–1959	10.4%
1940–1949	9.6%
1939 or earlier	26.7%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	5.8%
2 bedrooms	21.2%
3 bedrooms	52.2%
4 bedrooms	15.2%
5+ bedrooms	5.6%

Vehicles per household

Vehicles	% of households
No vehicle	1.4%
1 vehicle	41.2%
2 vehicles	49.1%
3 or more	8.3%

Heating fuel

Fuel type	%
Utility gas	91.3%
Electricity	3.1%
Propane / LP gas	2.9%

Households & families

Household type	Count	%
Married-couple family	242	46.8%
Cohabiting couple	27	5.2%
Male householder, no spouse	138	26.7%
Female householder, no spouse	110	21.3%
Households with children under 18	16	3.1%
Households with seniors (65+)	367	71.0%
Average household size	1.86

Marital status

Status	Male	Female
Never married	21.6%	6.6%
Married	51.4%	61.4%
Separated	0.0%	0.0%
Widowed	4.8%	21.4%
Divorced	22.2%	10.7%

Education

Less than 9th grade 0.7%

Some HS, no diploma 3.9%

HS graduate 22.1%

Some college, no degree 30.5%

Associate's degree 13.3%

Bachelor's degree 12.9%

Graduate / professional 16.6%

Metric	%
HS diploma or higher	95.4%
Bachelor's or higher	29.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	6	23.1%
High school	0	0.0%
College / grad school	20	76.9%

Employment

Industry of employment

Construction 24.0%

Education & healthcare 19.9%

Manufacturing 14.4%

Public administration 8.6%

Other services 8.4%

Retail trade 7.9%

Transportation & utilities 5.8%

Professional & management 5.5%

Finance & real estate 4.3%

Arts, food & hospitality 1.2%

Occupation

Category	%
Management, business & arts	34.5%
Service	9.8%
Sales & office	16.3%
Natural resources & construction	22.1%
Production & transportation	17.3%

Employment type

Type	%
Private sector	79.4%
Government	11.5%
Self-employed	8.2%
Unpaid family workers	1.0%

Commute

Method	%
Drive alone	85.4%
Carpool	6.0%
Public transit	0.0%
Walk	3.6%
Other means	0.0%
Avg commute (minutes)	35.7

Poverty

All people 6.7%

Under 18 years 84.6%

18 and over 4.5%

Married-couple families 2.5%

Female-led households 8.6%

Income support

Source	% of households
Social Security	60.7%
Retirement income	49.9%
Supplemental Security	3.5%
Cash public assistance	0.0%
Food stamps / SNAP	0.8%

Health indicators

Condition	%
High blood pressure	42.4%
High cholesterol	43.3%
Heart disease	9.9%
Stroke	4.1%
Asthma	10.2%
Arthritis	39.2%
Kidney disease	3.9%
Pulmonary disease	9.5%
Cancer	10.5%

Behavior / access	%
Binge drinking	14.9%
No physical activity	19.8%
Less than 7 hrs sleep	28.8%
Fair or poor health	15.1%
Poor mental health	12.8%
Poor physical health	11.7%
No health insurance	7.1%
Visited doctor (checkup)	79.2%
Visited dentist	75.3%
Cholesterol screening	95.5%
Teeth loss	10.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	53	5.7%

Disability	%
Any disability	17.4%
Under 18	0.0%
18–64 years	8.6%
65 and over	25.3%

Health insurance coverage

Type	%
Private insurance	71.6%
Public insurance	57.9%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	941	97.9%
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)	948	98.6%
Born in same state	942	98.0%
Born in different state	881	91.7%
Foreign born	6	0.6%
Naturalized citizen	13	1.4%
Not a US citizen	13	100.0%

Ancestry

Ancestry	Count	%
Italian	178	18.5%
French	110	11.4%
Arab	69	7.2%

Ancestry	Count	%
German	40	4.2%
English	25	2.6%
Polish	18	1.9%

Technology access

Metric	% of households
Computer access	53.8%
Internet access	90.5%

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

Frequently asked questions

What is the ZIP code for Harsens Island, MI?

Harsens Island, MI has one ZIP code: 48028.

What is the main ZIP code for Harsens Island, MI?

The primary ZIP code for Harsens Island, MI is 48028. The city uses area code 810 for phone service.

What county is Harsens Island, MI in?

Harsens Island is located in Saint Clair County, Michigan.

How many ZIP codes are in Harsens Island, MI?

Harsens Island, MI has 1 ZIP code.

What is the ZIP code for the main residential areas of Harsens Island, Michigan?

The primary ZIP code for Harsens Island is 48028, which covers all residential and commercial areas on this island community in Saint Clair County.

If I'm sending mail to a business or residence on Harsens Island, what ZIP code should I use?

All mail to Harsens Island should be addressed to ZIP code 48028, as this is the only ZIP code serving the entire island.