ZIP code 21150
Where is ZIP code 21150?
Simpsonville, Maryland
Howard County · PO Box only ZIP code
ZIP code 21150 belongs to Simpsonville, Maryland in Howard County. 21150 is a PO Box only ZIP code: it is used for post office boxes at the Simpsonville post office, not for street addresses. It is in the Eastern Time zone and uses area code 410. The closest ZIP codes are 21041 (Ellicott City, 0 mi north), 21029 (Clarksville, 1.7 mi south) and 21036 (Dayton, 2.9 mi west).
| ZIP code | 21150 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | Simpsonville |
| State | Maryland (MD) |
| County | Howard County |
| Time zone | Eastern Time · now |
| Area code | 410 |
| Coordinates | 39.2364, -76.9419 map |
| 3-digit prefix | 211 |
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 21150
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 21041 | Ellicott City, MD | 0 mi N | PO Box only |
| 21029 | Clarksville, MD | 1.7 mi S | Standard |
| 21036 | Dayton, MD | 2.9 mi W | Standard |
| 21044 | Columbia, MD | 3.7 mi SE | Standard |
| 20777 | Highland, MD | 3.9 mi S | Standard |
| 21794 | West Friendship, MD | 4.1 mi N | Standard |
| 21737 | Glenelg, MD | 4.4 mi W | Standard |
| 21738 | Glenwood, MD | 4.9 mi NW | Standard |
| 21042 | Ellicott City, MD | 5 mi NE | Standard |
| 20862 | Brinklow, MD | 5.4 mi SW | Standard |
| 20759 | Fulton, MD | 6 mi S | Standard |
| 21045 | Columbia, MD | 6.3 mi E | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 21150 or measure the distance to another ZIP code.
How to address mail to 21150
PO BOX 123
SIMPSONVILLE MD 21150
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (21150-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 21150?
- 21150 is a Simpsonville, Maryland ZIP code.
- What county is 21150 in?
- ZIP code 21150 is in Howard County, Maryland.
- What time zone is ZIP code 21150 in?
- 21150 is in the Eastern Time zone (America/New_York).
- What area code is 21150?
- Phone numbers in ZIP code 21150 use area code 410.
- Can I use 21150 for a street address?
- No. 21150 is only for PO Boxes. Street addresses in Simpsonville use another ZIP code.
- What ZIP codes are near 21150?
- The nearest ZIP codes to 21150 are 21041 (Ellicott City, 0 miles), 21029 (Clarksville, 1.7 miles), 21036 (Dayton, 2.9 miles) and 21044 (Columbia, 3.7 miles).