ZIP Code 46221 — Indianapolis, IN
46221 is a standard (street delivery) ZIP code serving Indianapolis, Indiana, in Marion 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 46221 at a glance
| ZIP code | 46221 |
|---|---|
| Primary city | Indianapolis |
| State | Indiana (IN) |
| County | Marion FIPS 18097 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Indiana/Indianapolis |
| Population | 27,027 |
| Coordinates | 39.692880, -86.236640 |
How ZIP+4 works in 46221
The four digits after the hyphen encode a delivery segment inside 46221. 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 46221 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 Indianapolis
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 46221.
| ZIP | City | Distance |
|---|---|---|
| 46217 | Indianapolis, IN | 2.7 mi |
| 46241 | Indianapolis, IN | 2.7 mi |
| 46183 | West Newton, IN | 3.6 mi |
| 46225 | Indianapolis, IN | 5.1 mi |
| 46231 | Indianapolis, IN | 5.2 mi |
| 46113 | Camby, IN | 5.4 mi |
| 46227 | Indianapolis, IN | 5.7 mi |
| 46142 | Greenwood, IN | 5.9 mi |
| 46206 | Indianapolis, IN | 6.1 mi |
| 46222 | Indianapolis, IN | 6.9 mi |
| 46204 | Indianapolis, IN | 6.9 mi |
| 46224 | Indianapolis, IN | 7.1 mi |
Questions about 46221
What is the ZIP+4 code for 46221?
46221 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 46221, you need to look up a specific street address to get them.
What city is 46221?
46221 is assigned to Indianapolis, Indiana, in Marion 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.