| City: | New Castle, Delaware |
| Names to Avoid: | Citibank |
| County: | New Castle County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 1:56:37 AM |
| Population: | No Population Data |
| Area Code: | 302 |
| Classification: | Unique [Company/Government] |
| Coordinates: | 39.6618, -75.5664 |
| Quick Link: |
Citibank (Delaware), a subsidiary of Citigroup, operates under dedicated ZIP code 19721 in New Castle County, Delaware. Delaware's favorable banking laws have attracted major financial institutions since the 1980s, and Citibank established significant credit card operations in the state. Citigroup traces its origins to 1812 when the City Bank of New York was founded.
Located near New Castle's Dobbinsville area (2.4 miles), this ZIP handles banking and credit card correspondence. With 3 ZIP+4 codes and a building designated for Citibank (Delaware) on Penns Street, this processes financial services mail. Census demographic data is not available. New Castle is the valid mailing city.
Buildings registered in the USPS ZIP+4 database with designated codes for direct mail delivery.
ZIP Code 19721 is assigned to a single organization or institution. Detailed business demographics are not published for unique ZIP Codes.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 4,233Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 0Source: CBP |
| 1st Quarter Payroll: | $0Source: CBP |
| Annual Payroll: | $0Source: CBP |
| # of Employees: | 0Source: CBP |
ZIP Code 19721 is located in New Castle County, Delaware, within the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD Metropolitan Statistical Area (CBSA 37980). This Metro area has a population of 6,241,882 people, about 0.00% of whom live in ZIP Code 19721, and is subdivided into the Wilmington, DE-MD-NJ division. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Philadelphia-Camden-Wilmington, PA-NJ-DE-MDSource: Census |
| CBSA Number: | 37980Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | Wilmington, DE-MD-NJ (CBSA Div 48864)Source: Census |
| CBSA Population: | 6,241,882Source: Census |
| MSA: | Philadelphia-Wilmington-Atlantic City, PA-NJ-DE-MD CMSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | No DistrictsSource: USPS |
| Congressional Land Area: | sq miSource: Census |
| PMSA: | Wilmington-Newark, DE-MD PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 1050800Source: Census |
| Place Name: | New Castle city; DelawareSource: Census |
We could not locate which school district 19721 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on January 1, 2026.