ZIP code 19721
Where is ZIP code 19721?
New Castle, Delaware
New Castle County · Unique ZIP code
ZIP code 19721 belongs to New Castle, Delaware in New Castle County. 19721 is a unique ZIP code assigned to a single organization (Citibank) that gets a lot of mail. It is in the Eastern Time zone and uses area code 302. The closest ZIP codes are 19712 (Newark, 0 mi north), 19714 (Newark, 0 mi north) and 19715 (Newark, 0 mi north).
| ZIP code | 19721 |
|---|---|
| Type | Unique ZIP code for a single organization |
| Status | Active |
| City | New Castle |
| State | Delaware (DE) |
| County | New Castle County |
| Time zone | Eastern Time · now |
| Area code | 302 |
| Coordinates | 39.5645, -75.597 map |
| 3-digit prefix | 197 |
The Census Bureau doesn’t publish population figures for unique 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 19721
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 19712 | Newark, DE | 0 mi N | Unique |
| 19714 | Newark, DE | 0 mi N | PO Box only |
| 19715 | Newark, DE | 0 mi N | PO Box only |
| 19718 | Newark, DE | 0 mi N | Unique |
| 19725 | Newark, DE | 0 mi N | Unique |
| 19850 | Wilmington, DE | 0 mi N | PO Box only |
| 19880 | Wilmington, DE | 0 mi N | PO Box only |
| 19890 | Wilmington, DE | 0 mi N | Unique |
| 19891 | Wilmington, DE | 0 mi N | Unique |
| 19892 | Wilmington, DE | 0 mi N | Unique |
| 19896 | Wilmington, DE | 0 mi N | Unique |
| 19897 | Wilmington, DE | 0 mi N | Unique |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 19721 or measure the distance to another ZIP code.
How to address mail to 19721
123 MAIN ST
NEW CASTLE DE 19721
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (19721-XXXX) helps mail sort faster but isn’t required.
Other ZIP codes in New Castle, DE
All New Castle ZIP codes with population and income →
Questions
- What city is ZIP code 19721?
- 19721 is a New Castle, Delaware ZIP code.
- What county is 19721 in?
- ZIP code 19721 is in New Castle County, Delaware.
- What time zone is ZIP code 19721 in?
- 19721 is in the Eastern Time zone (America/New_York).
- What area code is 19721?
- Phone numbers in ZIP code 19721 use area code 302.
- Can I use 19721 for a street address?
- Only for mail to the organization it is assigned to. Other addresses in New Castle use a standard ZIP code.
- What ZIP codes are near 19721?
- The nearest ZIP codes to 19721 are 19712 (Newark, 0 miles), 19714 (Newark, 0 miles), 19715 (Newark, 0 miles) and 19718 (Newark, 0 miles).