Flat Rock ZIP Code List — Wayne County, MI

There is one unique ZIP code in Flat Rock, Michigan and it is 48134. Area code: 734.
1
ZIP codes
18.53
sq mi land
0.44
sq mi water
734
area code
Flat Rock, MI ZIP code map

About Flat Rock, MI

Flat Rock, Michigan is a small city located in Wayne County, in the southeastern corner of the Lower Peninsula of Michigan. Served by a single ZIP code, 48134, the city offers a tight-knit community atmosphere while maintaining convenient access to the greater Detroit metropolitan area. Flat Rock sits along the Huron River, giving the city a natural scenic character that complements its blend of residential neighborhoods and light industrial activity.

Location & geography

Flat Rock is situated in the southern portion of Wayne County, approximately 25 miles south of downtown Detroit, placing it squarely within the Detroit metro region. Nearby cities include Rockwood to the southeast, Gibraltar to the south, Brownstown Township to the north, and Carleton to the west, making Flat Rock a centrally connected community within Monroe and Wayne counties. The city encompasses 18.53 square miles of land and 0.44 square miles of water, with the Huron River running through its boundaries and contributing to both its natural beauty and its historical industrial heritage.

Community & economy

Flat Rock has the character of a working-class American city with a strong sense of local pride, supported by a mix of long-established families and newer residents drawn to its affordability relative to larger Detroit suburbs. The city's economy has historically been anchored by automotive manufacturing, and that industrial tradition continues to shape the daily rhythms of community life. Residents enjoy local parks along the Huron River, community events, and easy access to shopping and dining along Telegraph Road and other local corridors.

Transportation

Flat Rock is well connected by road, with Interstate 75 passing through the area and providing direct north-south access to Detroit and Toledo, Ohio, making it a practical location for commuters and freight alike. Telegraph Road, also known as US-24, is another major surface artery that runs through the region, linking Flat Rock to neighboring communities. The nearest major commercial airport is Detroit Metropolitan Wayne County Airport, located roughly 15 to 20 miles to the north near Romulus, Michigan.

History

Flat Rock was officially incorporated as a city in 1965, though its settlement history dates back to the early nineteenth century when its location along the Huron River made it an attractive site for mills and early industry. The city's name is believed to refer to the flat limestone outcroppings found in the river in the area, a geological feature that shaped early navigation and settlement. Over the decades, Flat Rock's identity became closely tied to automotive manufacturing, particularly with the establishment of auto assembly operations that brought jobs and population growth to the community.

Did you know?

One little-known fact about Flat Rock is that its Huron River frontage has made it a quiet destination for kayakers and anglers who often bypass more famous stretches of the river upstream. The city is also home to the Flat Rock Speedway, a well-known short-track motorsports facility that has been a regional racing institution for decades, drawing racing fans from across southeastern Michigan and northwest Ohio.

ZIP codes for Flat Rock, MI (1)
ZIP code City County Map
48134 Flat Rock Wayne View map

Demographics & statistics

24,114
Population
39.7
Median age
$83,286
Median household income
$36,676
Per capita income
$239,200
Median home value
$1,054
Median monthly rent
80.6%
Home ownership
12.2%
Poverty rate
7.6%
Unemployment
7,608
Housing units
23.8%
Bachelor's or higher

Age distribution

Male Female
707
Under 5
741
716
5–9
751
803
10–14
843
836
15–19
877
749
20–24
785
1,437
25–34
1,507
1,396
35–44
1,464
1,543
45–54
1,620
937
55–59
983
754
60–64
791
1,328
65–74
1,394
434
75–84
455
128
85+
135
← Male
Female →

Age summary

GroupCount%
Under 185,79924.0%
18 and over18,31576.0%
65 and over3,87416.1%
Median age39.7 years

Race & ethnicity

White 75.5%
Black or African American 10.4%
Two or more races 6.4%
Hispanic or Latino 4.3%
Asian 1.8%
Other race 1.1%
American Indian / Alaska Native 0.5%
GroupCount%
White19,03675.5%
Black or African American2,63010.4%
Two or more races1,6056.4%
Hispanic or Latino1,0964.3%
Asian4441.8%
Other race2721.1%
American Indian / Alaska Native1270.5%

Household income

Under $10k 3.7%
$10k–$15k 3.5%
$15k–$25k 5.2%
$25k–$35k 7.8%
$35k–$50k 11.5%
$50k–$75k 13.9%
$75k–$100k 15.4%
$100k–$150k 18.7%
$150k–$200k 10.5%
$200k+ 9.8%
Range% of households
Under $10k3.7%
$10k–$15k3.5%
$15k–$25k5.2%
$25k–$35k7.8%
$35k–$50k11.5%
$50k–$75k13.9%
$75k–$100k15.4%
$100k–$150k18.7%
$150k–$200k10.5%
$200k+9.8%
Median income$83,286

Housing

Home values

Under $50k 15.8%
$50k–$100k 3.5%
$100k–$150k 5.2%
$150k–$200k 12.5%
$200k–$300k 31.5%
$300k–$500k 30.3%
$500k–$1M 1.2%

Housing overview

MetricValue
Median home value$239,200
Median rent / month$1,054
Owner occupied80.6%
Renter occupied19.4%
Vacant4.4%
Single-family detached64.2%
Large apartment buildings1.3%
Mobile homes16.2%
Median rooms5.9
Avg household size (owned)2.80

Year built

Era%
2020 or later0.7%
2010–201913.2%
2000–200924.2%
1990–199921.1%
1980–19898.7%
1970–197910.4%
1960–19692.8%
1950–195911.2%
1940–19492.0%
1939 or earlier5.8%

Bedrooms

Size% of units
No bedroom (studio)0.4%
1 bedroom4.0%
2 bedrooms25.8%
3 bedrooms44.7%
4 bedrooms23.0%
5+ bedrooms2.1%

Vehicles per household

Vehicles% of households
No vehicle2.3%
1 vehicle36.1%
2 vehicles38.5%
3 or more23.1%

Heating fuel

Fuel type%
Utility gas88.6%
Electricity9.9%
Propane / LP gas1.2%
Wood0.3%

Households & families

Household typeCount%
Married-couple family4,38349.1%
Cohabiting couple6026.7%
Male householder, no spouse1,49916.8%
Female householder, no spouse2,44827.4%
Households with children under 182,88232.3%
Households with seniors (65+)2,83631.8%
Average household size2.70

Marital status

StatusMaleFemale
Never married38.0%32.5%
Married46.8%45.5%
Separated1.4%1.4%
Widowed1.7%9.0%
Divorced12.2%11.7%

Education

Less than 9th grade 1.1%
Some HS, no diploma 6.5%
HS graduate 31.7%
Some college, no degree 24.9%
Associate's degree 12.1%
Bachelor's degree 15.5%
Graduate / professional 8.3%
Metric%
HS diploma or higher92.4%
Bachelor's or higher23.8%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool2324.0%
Kindergarten3395.8%
Elementary school2,37440.8%
High school1,61927.8%
College / grad school1,25321.5%

Employment

Industry of employment

Manufacturing 22.0%
Education & healthcare 21.8%
Retail trade 12.3%
Professional & management 9.9%
Arts, food & hospitality 6.6%
Transportation & utilities 6.5%
Finance & real estate 6.2%
Other services 5.5%
Construction 4.1%
Wholesale trade 2.0%
Public administration 2.0%
Information 1.0%

Occupation

Category%
Management, business & arts36.2%
Service15.1%
Sales & office20.4%
Natural resources & construction7.4%
Production & transportation21.0%

Employment type

Type%
Private sector88.1%
Government8.6%
Self-employed3.1%
Unpaid family workers0.1%

Commute

Method%
Drive alone81.1%
Carpool8.7%
Public transit0.2%
Walk0.6%
Other means0.6%
Avg commute (minutes)27.2

Poverty

All people 12.2%
Under 18 years 20.1%
18 and over 9.8%
Married-couple families 5.9%
Female-led households 26.2%

Income support

Source% of households
Social Security33.7%
Retirement income27.7%
Supplemental Security4.7%
Cash public assistance2.2%
Food stamps / SNAP9.0%

Health indicators

Condition%
High blood pressure28.8%
High cholesterol33.1%
Heart disease5.5%
Stroke2.6%
Asthma11.6%
Arthritis26.9%
Kidney disease2.5%
Pulmonary disease6.7%
Cancer5.9%
Behavior / access%
Binge drinking20.9%
No physical activity19.1%
Less than 7 hrs sleep34.2%
Fair or poor health12.7%
Poor mental health17.3%
Poor physical health10.0%
No health insurance9.1%
Visited doctor (checkup)72.2%
Visited dentist70.7%
Cholesterol screening91.6%
Teeth loss11.0%

Veterans & disability

VeteransCount%
Civilian veterans1,2126.6%
Disability%
Any disability10.1%
Under 183.1%
18–64 years9.1%
65 and over24.1%

Health insurance coverage

Type%
Private insurance77.2%
Public insurance35.1%
Uninsured under 192.3%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only22,66694.0%
Spanish3191.4%
Other Indo-European1110.5%
Asian & Pacific Islander2010.9%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)23,41897.1%
Born in same state23,31996.7%
Born in different state19,79982.1%
Foreign born990.4%
Naturalized citizen6962.9%
Not a US citizen60887.4%

Ancestry

AncestryCount%
Arab2,1829%
Italian2,1588.9%
French2,0448.5%
Irish8763.6%
Polish8193.4%
AncestryCount%
German5182.1%
English1570.7%
Dutch550.2%
Norwegian380.2%

Technology access

Metric% of households
Computer access37.0%
Internet access97.3%

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

Frequently asked questions
What is the ZIP code for Flat Rock, MI?
Flat Rock, MI has one ZIP code: 48134.
What is the main ZIP code for Flat Rock, MI?
The primary ZIP code for Flat Rock, MI is 48134. The city uses area code 734 for phone service.
What county is Flat Rock, MI in?
Flat Rock is located in Wayne County, Michigan.
How many ZIP codes are in Flat Rock, MI?
Flat Rock, MI has 1 ZIP code.
What ZIP code covers the downtown area and main business district of Flat Rock, MI?
The downtown area of Flat Rock, Michigan is located in ZIP code 48134, which serves as the primary commercial and civic center of the city.
If I'm sending mail to a residential address in Flat Rock, MI near the Huron River, what ZIP code should I use?
Addresses in Flat Rock near the Huron River, including residential neighborhoods throughout the city, use ZIP code 48134.
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