ZIP code 21020
Where is ZIP code 21020?
Boring, Maryland
Baltimore County · PO Box only ZIP code
ZIP code 21020 belongs to Boring, Maryland in Baltimore County. 21020 is a PO Box only ZIP code: it is used for post office boxes at the Boring post office, not for street addresses. It is in the Eastern Time zone and uses area code 410. The closest ZIP codes are 21071 (Glyndon, 3.1 mi south), 21155 (Upperco, 3.2 mi north) and 21023 (Butler, 3.4 mi east).
| ZIP code | 21020 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | Boring |
| State | Maryland (MD) |
| County | Baltimore County |
| Time zone | Eastern Time · now |
| Area code | 410 |
| Coordinates | 39.5213, -76.8047 map |
| 3-digit prefix | 210 |
The Census Bureau doesn’t publish population figures for po box only ZIP codes because nobody lives at a PO Box or a single organization’s address. For figures about the area, see the nearby standard ZIP codes below.
ZIP codes near 21020
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 21071 | Glyndon, MD | 3.1 mi S | PO Box only |
| 21155 | Upperco, MD | 3.2 mi N | Standard |
| 21023 | Butler, MD | 3.4 mi E | PO Box only |
| 21136 | Reisterstown, MD | 4.3 mi S | Standard |
| 21048 | Finksburg, MD | 5.8 mi W | Standard |
| 21152 | Sparks Glencoe, MD | 6.6 mi E | Standard |
| 21117 | Owings Mills, MD | 6.7 mi S | Standard |
| 21074 | Hampstead, MD | 7.2 mi NW | Standard |
| 21030 | Cockeysville, MD | 7.6 mi E | Standard |
| 21065 | Hunt Valley, MD | 8.4 mi E | Unique |
| 21031 | Hunt Valley, MD | 8.4 mi E | Standard |
| 21153 | Stevenson, MD | 9.1 mi SE | PO Box only |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 21020 or measure the distance to another ZIP code.
How to address mail to 21020
PO BOX 123
BORING MD 21020
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (21020-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 21020?
- 21020 is a Boring, Maryland ZIP code.
- What county is 21020 in?
- ZIP code 21020 is in Baltimore County, Maryland.
- What time zone is ZIP code 21020 in?
- 21020 is in the Eastern Time zone (America/New_York).
- What area code is 21020?
- Phone numbers in ZIP code 21020 use area code 410.
- Can I use 21020 for a street address?
- No. 21020 is only for PO Boxes. Street addresses in Boring use another ZIP code.
- What ZIP codes are near 21020?
- The nearest ZIP codes to 21020 are 21071 (Glyndon, 3.1 miles), 21155 (Upperco, 3.2 miles), 21023 (Butler, 3.4 miles) and 21136 (Reisterstown, 4.3 miles).