Petersburg ZIP Codes — Monroe County, MI

There is one unique ZIP code in Petersburg, Michigan and it is 49270. Area code: 734.

ZIP codes

44.91

sq mi land

0.43

sq mi water

734

area code

Petersburg, MI ZIP code map

About Petersburg, MI

Petersburg is a charming city located in the southeastern part of Michigan. It is situated within Monroe County and is known for its friendly community and rural charm. With a single ZIP code, 49270, Petersburg offers residents a small-town atmosphere with access to nearby urban amenities.

Location & geography

Petersburg is located approximately 15 miles north of the Ohio border and about 20 miles southwest of Monroe, MI. The city boasts a total land area of 44.91 square miles, complemented by a small water area of 0.43 square miles. Its terrain primarily consists of flat, agricultural land, making it a picturesque setting for those who appreciate open spaces.

Community & economy

The community in Petersburg is characterized by its close-knit atmosphere and a strong sense of pride among residents. A variety of local businesses serve the area, contributing to a diverse economy rooted in agriculture and service industries. Daily life in Petersburg reflects a blend of rural traditions and modern conveniences, offering residents a peaceful lifestyle.

Transportation

Major transportation in Petersburg is facilitated by US Highway 23, which provides convenient access to nearby cities. The nearest named airport is the Monroe County Airport, located just a short drive away, offering regional flights. Public transit options may be limited, emphasizing the need for personal vehicles for residents.

History

Petersburg was founded in the mid-1800s and quickly established itself as an agricultural hub in Monroe County. The city has traditionally relied on farming, but over the years, it has also seen development in various local industries. Notable events in its history include community festivals that celebrate its agricultural heritage and foster local camaraderie.

Did you know?

One surprising fact about Petersburg is that it is home to a unique annual event known as the Petersburg Pumpkin Festival, which attracts visitors from across the region. Additionally, the city’s small size belies its rich history and community spirit, making it an intriguing place for both residents and visitors alike.

ZIP codes for Petersburg, MI (1)

ZIP code	City	County	Map
49270	Petersburg	Monroe	View map

Demographics & statistics

5,634

Population

47.6

Median age

$81,419

Median household income

$37,043

Per capita income

$250,500

Median home value

$688

Median monthly rent

91.3%

Home ownership

9.5%

Poverty rate

3.2%

Unemployment

2,066

Housing units

26.0%

Bachelor's or higher

Age distribution

Male Female

182

Under 5

188

110

5–9

113

147

10–14

153

211

15–19

219

127

20–24

132

258

25–34

267

252

35–44

262

396

45–54

410

283

55–59

293

268

60–64

278

326

65–74

337

166

75–84

173

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,139	20.2%
18 and over	4,495	79.8%
65 and over	1,085	19.3%
Median age	47.6 years

Race & ethnicity

White 92.9%

Two or more races 3.8%

Hispanic or Latino 1.9%

Other race 0.8%

Black or African American 0.5%

Group	Count	%
White	5,336	92.9%
Two or more races	221	3.8%
Hispanic or Latino	107	1.9%
Other race	48	0.8%
Black or African American	29	0.5%

Household income

Under $10k 1.5%

$10k–$15k 2.1%

$15k–$25k 10.6%

$25k–$35k 3.4%

$35k–$50k 9.8%

$50k–$75k 18.1%

$75k–$100k 11.5%

$100k–$150k 19.5%

$150k–$200k 11.7%

$200k+ 11.8%

Range	% of households
Under $10k	1.5%
$10k–$15k	2.1%
$15k–$25k	10.6%
$25k–$35k	3.4%
$35k–$50k	9.8%
$50k–$75k	18.1%
$75k–$100k	11.5%
$100k–$150k	19.5%
$150k–$200k	11.7%
$200k+	11.8%
Median income	$81,419

Housing

Home values

Under $50k 5.6%

$50k–$100k 2.8%

$100k–$150k 11.4%

$150k–$200k 16.0%

$200k–$300k 24.5%

$300k–$500k 36.0%

$500k–$1M 3.3%

$1M+ 0.4%

Housing overview

Metric	Value
Median home value	$250,500
Median rent / month	$688
Owner occupied	91.3%
Renter occupied	8.7%
Vacant	8.6%
Single-family detached	97.6%
Large apartment buildings	0.1%
Mobile homes	0.4%
Median rooms	6.7
Avg household size (owned)	2.78

Year built

Era	%
2020 or later	0.0%
2010–2019	3.1%
2000–2009	8.0%
1990–1999	13.5%
1980–1989	7.2%
1970–1979	22.6%
1960–1969	5.9%
1950–1959	16.8%
1940–1949	10.3%
1939 or earlier	12.5%

Bedrooms

Size	% of units
No bedroom (studio)	0.4%
1 bedroom	2.1%
2 bedrooms	12.2%
3 bedrooms	57.5%
4 bedrooms	23.5%
5+ bedrooms	4.3%

Vehicles per household

Vehicles	% of households
No vehicle	1.2%
1 vehicle	20.2%
2 vehicles	34.7%
3 or more	43.9%

Heating fuel

Fuel type	%
Utility gas	61.6%
Electricity	5.8%
Propane / LP gas	27.0%
Fuel oil	1.1%
Wood	3.4%
No fuel used	0.5%

Households & families

Household type	Count	%
Married-couple family	1,376	67.1%
Cohabiting couple	162	7.9%
Male householder, no spouse	232	11.3%
Female householder, no spouse	280	13.7%
Households with children under 18	517	25.2%
Households with seniors (65+)	736	35.9%
Average household size	2.71

Marital status

Status	Male	Female
Never married	23.2%	19.8%
Married	63.6%	61.3%
Separated	0.0%	0.0%
Widowed	2.2%	9.4%
Divorced	11.0%	9.6%

Education

Less than 9th grade 0.3%

Some HS, no diploma 6.3%

HS graduate 32.5%

Some college, no degree 20.8%

Associate's degree 14.1%

Bachelor's degree 16.7%

Graduate / professional 9.3%

Metric	%
HS diploma or higher	93.4%
Bachelor's or higher	26.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	68	5.8%
Kindergarten	71	6.1%
Elementary school	443	38.1%
High school	301	25.9%
College / grad school	281	24.1%

Employment

Industry of employment

Manufacturing 22.9%

Education & healthcare 21.8%

Transportation & utilities 10.7%

Retail trade 9.8%

Arts, food & hospitality 9.0%

Professional & management 8.0%

Construction 7.0%

Public administration 3.4%

Other services 3.3%

Finance & real estate 2.1%

Wholesale trade 1.4%

Agriculture & mining 0.4%

Information 0.3%

Occupation

Category	%
Management, business & arts	35.9%
Service	15.2%
Sales & office	13.8%
Natural resources & construction	11.9%
Production & transportation	23.1%

Employment type

Type	%
Private sector	85.0%
Government	10.9%
Self-employed	3.7%
Unpaid family workers	0.4%

Commute

Method	%
Drive alone	82.1%
Carpool	7.0%
Public transit	0.7%
Walk	1.2%
Other means	0.7%
Avg commute (minutes)	30.6

Poverty

All people 9.5%

Under 18 years 4.3%

18 and over 10.8%

Married-couple families 3.6%

Female-led households 8.8%

Income support

Source	% of households
Social Security	40.1%
Retirement income	40.3%
Supplemental Security	2.8%
Cash public assistance	0.9%
Food stamps / SNAP	9.7%

Health indicators

Condition	%
High blood pressure	34.1%
High cholesterol	33.8%
Heart disease	6.1%
Stroke	2.8%
Asthma	10.7%
Arthritis	28.6%
Kidney disease	2.7%
Pulmonary disease	7.2%
Cancer	6.8%

Behavior / access	%
Binge drinking	19.2%
No physical activity	19.0%
Less than 7 hrs sleep	32.3%
Fair or poor health	13.2%
Poor mental health	15.8%
Poor physical health	10.3%
No health insurance	8.7%
Visited doctor (checkup)	72.3%
Visited dentist	70.8%
Cholesterol screening	91.4%
Teeth loss	11.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	234	5.2%

Disability	%
Any disability	12.6%
Under 18	6.6%
18–64 years	9.8%
65 and over	27.7%

Health insurance coverage

Type	%
Private insurance	82.7%
Public insurance	34.2%
Uninsured under 19	2.6%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	5,264	93.4%
Spanish	32	0.6%
Other Indo-European	32	0.6%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	5,600	99.4%
Born in same state	5,589	99.2%
Born in different state	2,527	44.9%
Foreign born	11	0.2%
Naturalized citizen	34	0.6%
Not a US citizen	7	20.6%

Ancestry

Ancestry	Count	%
French	804	14.3%
Italian	518	9.2%
Arab	262	4.7%
German	91	1.6%

Ancestry	Count	%
Irish	70	1.2%
English	45	0.8%
Polish	30	0.5%
Norwegian	16	0.3%

Technology access

Metric	% of households
Computer access	36.4%
Internet access	95.9%

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

Frequently asked questions

What ZIP codes does Petersburg, MI have?

Petersburg, MI has one ZIP code: 49270. Each ZIP code serves a distinct delivery area within the city and surrounding region.