48039 ZIP Code — Marine City, MI

Saint Clair County, Michigan

ZIP code 48039 is located in Marine City, Michigan, within Saint Clair County. It covers approximately 23.01 square miles and serves a population of 7,486 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 810.

About ZIP code 48039

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $165,000. Owner-occupancy is high at 86%, well above the national average.

Median household income is $70,969. 41% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with manufacturing as the leading industry. The average commute of 33 minutes is near the national average.

College attainment at 18% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (22%) compared to national benchmarks.

Overall, ZIP code 48039 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.

7,486

population

23.01

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

48039 ZIP code map

Cities in ZIP code 48039

Below are the cities the US Postal Service accepts for ZIP code 48039. Using any city not on this list may result in mail delivery delays.

City	Status
Marine City	Acceptable
Marine City	Preferred

Nearby ZIP codes

48001 Algonac (4.4 mi) 48023 Fair Haven (6.1 mi) 48028 Harsens Island (8.3 mi) 48079 Saint Clair (11.2 mi) 48047 New Baltimore (11.6 mi) 48048 New Haven (13 mi) 48051 New Baltimore (13.5 mi) 48050 New Haven (14.1 mi) 48040 Marysville (15.1 mi) 48062 Richmond (16.4 mi) 48074 Smiths Creek (17.5 mi) 48043 Mount Clemens (18 mi)

Demographics updated 07/2026

Population
Total population	7,486
Population density	325 / sq mi
State FIPS	26
County FIPS	147

Geography
Land area	23.01 sq mi
Water area	1.87 sq mi
Latitude	42.6941
Longitude	-82.5497
Timezone	Eastern (ET)
Area code	810

Total population by age

Gender

Race & ethnicity

Economics updated 07/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	44.9%	43.0%	42.6%
$50k – $100k	33.9%	31.9%	31.1%
$100k – $200k	19.9%	21.1%	20.6%
Over $200k	1.3%	4.0%	5.7%

Demographics & statistics

7,486

Population

325

People per sq mi

48.1

Median age

$70,969

Median household income

$34,469

Per capita income

$165,000

Median home value

$899

Median monthly rent

86.2%

Home ownership

9.3%

Poverty rate

5.9%

Unemployment

3,236

Housing units

17.6%

Bachelor's or higher

Age distribution

Male Female

184

Under 5

182

134

5–9

133

208

10–14

207

337

15–19

334

115

20–24

115

332

25–34

330

400

35–44

397

548

45–54

544

379

55–59

376

262

60–64

261

594

65–74

590

188

75–84

187

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,441	19.2%
18 and over	6,045	80.8%
65 and over	1,708	22.8%
Median age	48.1 years

Race & ethnicity

White 98.1%

Two or more races 1.1%

Hispanic or Latino 0.6%

American Indian / Alaska Native 0.1%

Other race 0.1%

Group	Count	%
White	7,388	98.1%
Two or more races	86	1.1%
Hispanic or Latino	48	0.6%
American Indian / Alaska Native	8	0.1%
Other race	4	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	44.9%	43.0%	42.6%
$50k – $100k	33.9%	31.9%	31.1%
$100k – $200k	19.9%	21.1%	20.6%
Over $200k	1.3%	4.0%	5.7%

Under $10k 4.9%

$10k–$15k 3.4%

$15k–$25k 7.7%

$25k–$35k 6.8%

$35k–$50k 13.9%

$50k–$75k 16.9%

$75k–$100k 20.9%

$100k–$150k 13.3%

$150k–$200k 7.8%

$200k+ 4.5%

Range	% of households
Under $10k	4.9%
$10k–$15k	3.4%
$15k–$25k	7.7%
$25k–$35k	6.8%
$35k–$50k	13.9%
$50k–$75k	16.9%
$75k–$100k	20.9%
$100k–$150k	13.3%
$150k–$200k	7.8%
$200k+	4.5%
Median income	$70,969

Housing

Home values

Under $50k 8.0%

$50k–$100k 8.5%

$100k–$150k 26.3%

$150k–$200k 17.7%

$200k–$300k 24.2%

$300k–$500k 10.8%

$500k–$1M 4.2%

$1M+ 0.4%

Housing overview

Metric	Value
Median home value	$165,000
Median rent / month	$899
Owner occupied	86.2%
Renter occupied	13.8%
Vacant	10.9%
Single-family detached	81.5%
Large apartment buildings	1.0%
Mobile homes	4.1%
Median rooms	6.0
Avg household size (owned)	2.32

Year built

Era	%
2020 or later	0.3%
2010–2019	0.7%
2000–2009	7.0%
1990–1999	12.4%
1980–1989	8.6%
1970–1979	12.7%
1960–1969	5.9%
1950–1959	11.8%
1940–1949	7.7%
1939 or earlier	32.8%

Bedrooms

Size	% of units
No bedroom (studio)	0.7%
1 bedroom	7.9%
2 bedrooms	20.4%
3 bedrooms	49.0%
4 bedrooms	17.1%
5+ bedrooms	4.9%

Vehicles per household

Vehicles	% of households
No vehicle	2.8%
1 vehicle	29.6%
2 vehicles	45.2%
3 or more	22.4%

Heating fuel

Fuel type	%
Utility gas	81.3%
Electricity	6.4%
Propane / LP gas	7.4%
Fuel oil	0.5%
Wood	3.0%
No fuel used	0.8%

Households & families

Household type	Count	%
Married-couple family	1,692	51.5%
Cohabiting couple	144	4.4%
Male householder, no spouse	752	22.9%
Female householder, no spouse	699	21.3%
Households with children under 18	798	24.3%
Households with seniors (65+)	1,293	39.3%
Average household size	2.28

Marital status

Status	Male	Female
Never married	27.0%	23.2%
Married	53.3%	54.3%
Separated	0.4%	0.9%
Widowed	2.1%	10.7%
Divorced	17.3%	10.9%

Education

Less than 9th grade 1.7%

Some HS, no diploma 4.6%

HS graduate 42.6%

Some college, no degree 23.6%

Associate's degree 9.8%

Bachelor's degree 10.1%

Graduate / professional 7.5%

Metric	%
HS diploma or higher	93.6%
Bachelor's or higher	17.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	49	3.2%
Kindergarten	42	2.8%
Elementary school	610	40.0%
High school	548	35.9%
College / grad school	276	18.1%

Employment

Industry of employment

Manufacturing 25.4%

Education & healthcare 13.7%

Retail trade 9.9%

Construction 9.2%

Professional & management 9.1%

Transportation & utilities 7.2%

Other services 6.9%

Arts, food & hospitality 5.6%

Finance & real estate 3.6%

Public administration 3.6%

Information 3.3%

Wholesale trade 1.9%

Agriculture & mining 0.6%

Occupation

Category	%
Management, business & arts	23.9%
Service	13.6%
Sales & office	22.6%
Natural resources & construction	16.2%
Production & transportation	23.8%

Employment type

Type	%
Private sector	81.8%
Government	11.5%
Self-employed	6.4%
Unpaid family workers	0.3%

Commute

Method	%
Drive alone	75.6%
Carpool	13.5%
Public transit	0.0%
Walk	3.7%
Work from home	6.7%
Other means	0.5%
Avg commute (minutes)	32.7

Poverty

All people 9.3%

Under 18 years 12.1%

18 and over 8.6%

Married-couple families 3.8%

Female-led households 25.6%

Income support

Source	% of households
Social Security	40.8%
Retirement income	31.4%
Supplemental Security	3.8%
Cash public assistance	2.0%
Food stamps / SNAP	11.1%

Health indicators

Condition	%
Obesity	37.5%
High blood pressure	33.6%
High cholesterol	34.8%
Diabetes	10.8%
Heart disease	6.9%
Stroke	3.2%
Asthma	11.1%
Arthritis	30.6%
Kidney disease	2.9%
Pulmonary disease	8.2%
Cancer	6.9%

Behavior / access	%
Smoking	21.9%
Binge drinking	19.9%
No physical activity	20.9%
Less than 7 hrs sleep	32.7%
Depression	21.4%
Fair or poor health	14.5%
Poor mental health	16.6%
Poor physical health	11.3%
No health insurance	9.3%
Visited doctor (checkup)	73.6%
Visited dentist	70.4%
Cholesterol screening	91.0%
Teeth loss	12.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	655	10.9%

Disability	%
Any disability	18.8%
Under 18	5.2%
18–64 years	15.6%
65 and over	38.4%

Health insurance coverage

Type	%
Private insurance	74.0%
Public insurance	43.9%
No insurance	4.9%
Uninsured under 19	3.3%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	7,120	95.1%
Spanish	4	0.1%
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)	7,418	99.1%
Born in same state	7,381	98.6%
Born in different state	6,568	87.7%
Foreign born	37	0.5%
Naturalized citizen	68	0.9%
Not a US citizen	31	45.6%

Ancestry

Ancestry	Count	%
Italian	1,162	15.5%
French	611	8.2%
Arab	347	4.6%
Irish	140	1.9%

Ancestry	Count	%
German	132	1.8%
English	81	1.1%
Norwegian	13	0.2%
Dutch	8	0.1%

Technology access

Metric	% of households
Computer access	43.9%
Internet access	92.0%

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

Frequently asked questions about ZIP code 48039

What city is ZIP code 48039 in?

ZIP code 48039 is primarily assigned to Marine City, Michigan.

What county is ZIP code 48039 in?

ZIP code 48039 falls within Saint Clair County, Michigan.

Is ZIP code 48039 mostly owner-occupied?

86% of occupied units in ZIP code 48039 are owner-occupied, well above the national average.

Does ZIP code 48039 have a large retiree population?

41% of households in ZIP code 48039 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 48039 have a large veteran population?

11% of civilians in ZIP code 48039 are veterans, above the national average of ~7%.

What is the typical home value in ZIP code 48039?

The median home value in ZIP code 48039 is $165,000.

What timezone is ZIP code 48039 in?

ZIP code 48039 observes the EST timezone.