ZIP code 21912
Where is ZIP code 21912?
Warwick, Maryland
Cecil County · Standard ZIP code
ZIP code 21912 belongs to Warwick, Maryland in Cecil County. 21912 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Eastern Time zone and uses area codes 302, 410, 443 and 667. About 1,536 people live in the 21912 area, where the median household income is $69,868. The closest ZIP codes are 21913 (Cecilton, 4 mi southwest), 21930 (Georgetown, 6.2 mi southwest) and 21915 (Chesapeake City, 6.3 mi north).
| ZIP code | 21912 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Warwick |
| State | Maryland (MD) |
| County | Cecil County |
| Time zone | Eastern Time · now |
| Area codes | 302, 410, 443, 667 |
| Coordinates | 39.4283, -75.7996 map |
| 3-digit prefix | 219 |
Population and income in 21912
| Population | 1,536 · lower than 69% of Maryland ZIP codes |
|---|---|
| People per square mile | 45 · lower than 89% of Maryland ZIP codes |
| Median age | 58.2 years · higher than 90% of Maryland ZIP codes |
| Men / women | 43% / 57% |
| Median household income | $69,868 · lower than 84% of Maryland ZIP codes |
| Income per person | $65,613 |
| Below the poverty line | 3.5% |
| Bachelor’s degree or higher | 25% of adults 25+ |
| Median home value | $391,700 · lower than 55% of Maryland ZIP codes |
| Median rent | $817 a month |
| Housing units | 704 |
| Households | 696 (2.21 people on average) |
| Owners / renters | 87% / 13% |
| Land area | 33.87 sq mi (plus 1.75 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 21912. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 21912
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 21913 | Cecilton, MD | 4 mi SW | PO Box only |
| 21930 | Georgetown, MD | 6.2 mi SW | PO Box only |
| 21915 | Chesapeake City, MD | 6.3 mi N | Standard |
| 19734 | Townsend, DE | 7 mi SE | Standard |
| 19709 | Middletown, DE | 7.2 mi NE | Standard |
| 21635 | Galena, MD | 7.4 mi SW | Standard |
| 21919 | Earleville, MD | 7.5 mi W | Standard |
| 19730 | Odessa, DE | 8.1 mi E | PO Box only |
| 21650 | Massey, MD | 8.1 mi S | Standard |
| 21651 | Millington, MD | 11.8 mi SW | Standard |
| 19733 | Saint Georges, DE | 11.9 mi NE | PO Box only |
| 19708 | Kirkwood, DE | 11.9 mi NE | PO Box only |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 21912 or measure the distance to another ZIP code.
How to address mail to 21912
123 MAIN ST
WARWICK MD 21912
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (21912-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 21912?
- 21912 is a Warwick, Maryland ZIP code.
- What county is 21912 in?
- ZIP code 21912 is in Cecil County, Maryland.
- What time zone is ZIP code 21912 in?
- 21912 is in the Eastern Time zone (America/New_York).
- What area code is 21912?
- Phone numbers in ZIP code 21912 use area codes 302, 410, 443 and 667.
- What is the population of ZIP code 21912?
- About 1,536 people live in ZIP code 21912, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 21912?
- The median household income in 21912 is $69,868 a year, lower than 84% of Maryland ZIP codes.
- What ZIP codes are near 21912?
- The nearest ZIP codes to 21912 are 21913 (Cecilton, 4 miles), 21930 (Georgetown, 6.2 miles), 21915 (Chesapeake City, 6.3 miles) and 19734 (Townsend, 7 miles).