ZIP Code 51646 — New Market, IA
51646 is a standard (street delivery) ZIP code serving New Market, Iowa, in Taylor 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 51646 at a glance
| ZIP code | 51646 |
|---|---|
| Primary city | New Market |
| State | Iowa (IA) |
| County | Taylor FIPS 19173 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 767 |
| Coordinates | 40.753150, -94.872500 |
How ZIP+4 works in 51646
The four digits after the hyphen encode a delivery segment inside 51646. 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 51646 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 51646.
| ZIP | City | Distance |
|---|---|---|
| 50848 | Gravity, IA | 6 mi |
| 51632 | Clarinda, IA | 9.3 mi |
| 50833 | Bedford, IA | 10.6 mi |
| 51651 | Shambaugh, IA | 10.8 mi |
| 50862 | Sharpsburg, IA | 12.3 mi |
| 51631 | Braddyville, IA | 12.6 mi |
| 50857 | Nodaway, IA | 12.9 mi |
| 51656 | Yorktown, IA | 14.8 mi |
| 51637 | College Springs, IA | 15.8 mi |
| 64461 | Hopkins, MO | 16.1 mi |
| 50864 | Villisca, IA | 16.4 mi |
| 64431 | Clearmont, MO | 16.6 mi |
Questions about 51646
What is the ZIP+4 code for 51646?
51646 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 51646, you need to look up a specific street address to get them.
What city is 51646?
51646 is assigned to New Market, Iowa, in Taylor 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.