ZIP Code 46121 — Coatesville, IN
46121 is a standard (street delivery) ZIP code serving Coatesville, Indiana, in Hendricks 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 46121 at a glance
| ZIP code | 46121 |
|---|---|
| Primary city | Coatesville |
| State | Indiana (IN) |
| County | Hendricks FIPS 18063 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Indiana/Indianapolis |
| Population | 5,271 |
| Coordinates | 39.677760, -86.673450 |
How ZIP+4 works in 46121
The four digits after the hyphen encode a delivery segment inside 46121. 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 46121 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 46121.
| ZIP | City | Distance |
|---|---|---|
| 46103 | Amo, IN | 3.3 mi |
| 46128 | Fillmore, IN | 4 mi |
| 46180 | Stilesville, IN | 6.3 mi |
| 46118 | Clayton, IN | 8.1 mi |
| 46122 | Danville, IN | 9.1 mi |
| 46105 | Bainbridge, IN | 9.6 mi |
| 46125 | Eminence, IN | 10.9 mi |
| 46157 | Monrovia, IN | 11.4 mi |
| 46165 | North Salem, IN | 11.6 mi |
| 46135 | Greencastle, IN | 11.6 mi |
| 46170 | Putnamville, IN | 12.4 mi |
| 46172 | Roachdale, IN | 12.7 mi |
Questions about 46121
What is the ZIP+4 code for 46121?
46121 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 46121, you need to look up a specific street address to get them.
What city is 46121?
46121 is assigned to Coatesville, Indiana, in Hendricks 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.