ZIP Code 46123 — Avon, IN
46123 is a standard (street delivery) ZIP code serving Avon, 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 46123 at a glance
| ZIP code | 46123 |
|---|---|
| Primary city | Avon |
| State | Indiana (IN) |
| County | Hendricks FIPS 18063 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Indiana/Indianapolis |
| Population | 43,353 |
| Coordinates | 39.765020, -86.400150 |
How ZIP+4 works in 46123
The four digits after the hyphen encode a delivery segment inside 46123. 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 46123 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 46123.
| ZIP | City | Distance |
|---|---|---|
| 46231 | Indianapolis, IN | 4.9 mi |
| 46234 | Indianapolis, IN | 5 mi |
| 46168 | Plainfield, IN | 5.2 mi |
| 46214 | Indianapolis, IN | 6.1 mi |
| 46112 | Brownsburg, IN | 7 mi |
| 46241 | Indianapolis, IN | 7.5 mi |
| 46122 | Danville, IN | 7.8 mi |
| 46224 | Indianapolis, IN | 7.9 mi |
| 46167 | Pittsboro, IN | 8.5 mi |
| 46254 | Indianapolis, IN | 9 mi |
| 46183 | West Newton, IN | 9.9 mi |
| 46221 | Indianapolis, IN | 10 mi |
Questions about 46123
What is the ZIP+4 code for 46123?
46123 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 46123, you need to look up a specific street address to get them.
What city is 46123?
46123 is assigned to Avon, 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.