ZIP Code 33813 — Lakeland, FL
33813 is a standard (street delivery) ZIP code serving Lakeland, Florida, in Polk 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 33813 at a glance
| ZIP code | 33813 |
|---|---|
| Primary city | Lakeland |
| State | Florida (FL) |
| County | Polk FIPS 12105 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 38,674 |
| Coordinates | 27.947890, -81.927010 |
How ZIP+4 works in 33813
The four digits after the hyphen encode a delivery segment inside 33813. 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 33813 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 Lakeland
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 33813.
| ZIP | City | Distance |
|---|---|---|
| 33812 | Lakeland, FL | 2.7 mi |
| 33803 | Lakeland, FL | 4.2 mi |
| 33840 | Eaton Park, FL | 4.4 mi |
| 33811 | Lakeland, FL | 6 mi |
| 33801 | Lakeland, FL | 6.7 mi |
| 33815 | Lakeland, FL | 7.7 mi |
| 33830 | Bartow, FL | 8.7 mi |
| 33880 | Winter Haven, FL | 9.8 mi |
| 33805 | Lakeland, FL | 10.4 mi |
| 33839 | Eagle Lake, FL | 10.7 mi |
| 33860 | Mulberry, FL | 10.7 mi |
| 33835 | Bradley, FL | 11.4 mi |
Questions about 33813
What is the ZIP+4 code for 33813?
33813 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 33813, you need to look up a specific street address to get them.
What city is 33813?
33813 is assigned to Lakeland, Florida, in Polk 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.