ZIP Code 20701 — Annapolis Junction, MD
20701 is a standard (street delivery) ZIP code serving Annapolis Junction, Maryland, in Howard 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 20701 at a glance
| ZIP code | 20701 |
|---|---|
| Primary city | Annapolis Junction |
| State | Maryland (MD) |
| County | Howard FIPS 24027 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 513 |
| Coordinates | 39.128770, -76.788030 |
How ZIP+4 works in 20701
The four digits after the hyphen encode a delivery segment inside 20701. 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 20701 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 20701.
| ZIP | City | Distance |
|---|---|---|
| 20794 | Jessup, MD | 1.5 mi |
| 20763 | Savage, MD | 1.9 mi |
| 20755 | Fort George G Meade, MD | 3.1 mi |
| 20724 | Laurel, MD | 3.3 mi |
| 21046 | Columbia, MD | 4.2 mi |
| 20723 | Laurel, MD | 4.2 mi |
| 21076 | Hanover, MD | 4.5 mi |
| 21077 | Harmans, MD | 5.2 mi |
| 21075 | Elkridge, MD | 5.5 mi |
| 20707 | Laurel, MD | 5.6 mi |
| 21045 | Columbia, MD | 5.7 mi |
| 21144 | Severn, MD | 5.9 mi |
Questions about 20701
What is the ZIP+4 code for 20701?
20701 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 20701, you need to look up a specific street address to get them.
What city is 20701?
20701 is assigned to Annapolis Junction, Maryland, in Howard 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.