ZIP Code 20623 — Cheltenham, MD
20623 is a standard (street delivery) ZIP code serving Cheltenham, Maryland, in Prince George's 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 20623 at a glance
| ZIP code | 20623 |
|---|---|
| Primary city | Cheltenham |
| State | Maryland (MD) |
| County | Prince George's FIPS 24033 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,761 |
| Coordinates | 38.742300, -76.837470 |
How ZIP+4 works in 20623
The four digits after the hyphen encode a delivery segment inside 20623. 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 20623 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 20623.
| ZIP | City | Distance |
|---|---|---|
| 20735 | Clinton, MD | 3.7 mi |
| 20772 | Upper Marlboro, MD | 4.4 mi |
| 20762 | Andrews Air Force Base, MD | 4.9 mi |
| 20613 | Brandywine, MD | 5.2 mi |
| 20748 | Temple Hills, MD | 7.6 mi |
| 20744 | Fort Washington, MD | 7.9 mi |
| 20746 | Suitland, MD | 7.9 mi |
| 20747 | District Heights, MD | 8.1 mi |
| 20601 | Waldorf, MD | 8.6 mi |
| 20745 | Oxon Hill, MD | 9.5 mi |
| 20754 | Dunkirk, MD | 9.8 mi |
| 20774 | Upper Marlboro, MD | 9.9 mi |
Questions about 20623
What is the ZIP+4 code for 20623?
20623 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 20623, you need to look up a specific street address to get them.
What city is 20623?
20623 is assigned to Cheltenham, Maryland, in Prince George's 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.