ZIP Code 49238 — Deerfield, MI
49238 is a standard (street delivery) ZIP code serving Deerfield, Michigan, in Lenawee 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 49238 at a glance
| ZIP code | 49238 |
|---|---|
| Primary city | Deerfield |
| State | Michigan (MI) |
| County | Lenawee FIPS 26091 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 1,914 |
| Coordinates | 41.905930, -83.788090 |
How ZIP+4 works in 49238
The four digits after the hyphen encode a delivery segment inside 49238. 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 49238 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.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 49238.
| ZIP | City | Distance |
|---|---|---|
| 49270 | Petersburg, MI | 6 mi |
| 49229 | Britton, MI | 6.1 mi |
| 48131 | Dundee, MI | 7.2 mi |
| 49268 | Palmyra, MI | 7.5 mi |
| 49276 | Riga, MI | 7.5 mi |
| 49228 | Blissfield, MI | 8.5 mi |
| 49267 | Ottawa Lake, MI | 10.6 mi |
| 49286 | Tecumseh, MI | 10.6 mi |
| 48140 | Ida, MI | 10.7 mi |
| 48177 | Samaria, MI | 12.7 mi |
| 48182 | Temperance, MI | 13.3 mi |
| 48144 | Lambertville, MI | 13.4 mi |
Questions about 49238
What is the ZIP+4 code for 49238?
49238 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 49238, you need to look up a specific street address to get them.
What city is 49238?
49238 is assigned to Deerfield, Michigan, in Lenawee 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.