ZIP Code 48042 — Macomb, MI
48042 is a standard (street delivery) ZIP code serving Macomb, Michigan, in Macomb County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 48042 at a glance
| ZIP code | 48042 |
|---|---|
| Primary city | Macomb |
| State | Michigan (MI) |
| County | Macomb FIPS 26099 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 33,875 |
| Coordinates | 42.686730, -82.908570 |
How ZIP+4 works in 48042
The four digits after the hyphen encode a delivery segment inside 48042. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 48042 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Other ZIP codes in Macomb
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 48042.
| ZIP | City | Distance |
|---|---|---|
| 48044 | Macomb, MI | 2.8 mi |
| 48051 | New Baltimore, MI | 4.2 mi |
| 48315 | Utica, MI | 4.6 mi |
| 48096 | Ray, MI | 5.2 mi |
| 48038 | Clinton Township, MI | 5.9 mi |
| 48043 | Mount Clemens, MI | 6.3 mi |
| 48036 | Clinton Township, MI | 6.5 mi |
| 48047 | New Baltimore, MI | 6.7 mi |
| 48048 | New Haven, MI | 6.9 mi |
| 48094 | Washington, MI | 7.4 mi |
| 48316 | Utica, MI | 7.5 mi |
| 48313 | Sterling Heights, MI | 7.6 mi |
Questions about 48042
What is the ZIP+4 code for 48042?
48042 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 48042, you need to look up a specific street address to get them.
What city is 48042?
48042 is assigned to Macomb, Michigan, in Macomb County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.