ZIP Code 63019 — Crystal City, MO
63019 is a standard (street delivery) ZIP code serving Crystal City, Missouri, in Jefferson 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 63019 at a glance
| ZIP code | 63019 |
|---|---|
| Primary city | Crystal City |
| State | Missouri (MO) |
| County | Jefferson FIPS 29099 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 4,489 |
| Coordinates | 38.229000, -90.376840 |
How ZIP+4 works in 63019
The four digits after the hyphen encode a delivery segment inside 63019. 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 63019 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 63019.
| ZIP | City | Distance |
|---|---|---|
| 63048 | Herculaneum, MO | 2.2 mi |
| 63070 | Pevely, MO | 4.5 mi |
| 62295 | Valmeyer, IL | 4.7 mi |
| 63028 | Festus, MO | 5.8 mi |
| 63047 | Hematite, MO | 6.4 mi |
| 62256 | Maeystown, IL | 7.9 mi |
| 63012 | Barnhart, MO | 8.3 mi |
| 63053 | Kimmswick, MO | 9.5 mi |
| 62244 | Fults, IL | 10.1 mi |
| 63050 | Hillsboro, MO | 11 mi |
| 63052 | Imperial, MO | 11.5 mi |
| 62298 | Waterloo, IL | 13.4 mi |
Questions about 63019
What is the ZIP+4 code for 63019?
63019 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 63019, you need to look up a specific street address to get them.
What city is 63019?
63019 is assigned to Crystal City, Missouri, in Jefferson 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.