ZIP code 21918
Where is ZIP code 21918?
Conowingo, Maryland
Cecil County · Standard ZIP code
ZIP code 21918 belongs to Conowingo, Maryland in Cecil County. 21918 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 223, 410, 443, 667 and 717. About 4,169 people live in the 21918 area, where the median household income is $84,587. The closest ZIP codes are 21917 (Colora, 3.4 mi east), 21034 (Darlington, 4.1 mi southwest) and 21911 (Rising Sun, 5.8 mi east).
| ZIP code | 21918 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Conowingo |
| State | Maryland (MD) |
| County | Cecil County |
| Time zone | Eastern Time · now |
| Area codes | 223, 410, 443, 667, 717 |
| Coordinates | 39.6778, -76.1572 map |
| 3-digit prefix | 219 |
Population and income in 21918
| Population | 4,169 · lower than 54% of Maryland ZIP codes |
|---|---|
| People per square mile | 237 · lower than 61% of Maryland ZIP codes |
| Median age | 42.9 years · higher than 56% of Maryland ZIP codes |
| Men / women | 51% / 49% |
| Median household income | $84,587 · lower than 70% of Maryland ZIP codes |
| Income per person | $47,697 |
| Below the poverty line | 6.1% |
| Bachelor’s degree or higher | 16% of adults 25+ |
| Median home value | $324,800 · lower than 73% of Maryland ZIP codes |
| Median rent | $876 a month |
| Housing units | 1,815 |
| Households | 1,775 (2.34 people on average) |
| Owners / renters | 89% / 11% |
| Land area | 17.57 sq mi (plus 2.55 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 21918. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 21918
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 21917 | Colora, MD | 3.4 mi E | Standard |
| 21034 | Darlington, MD | 4.1 mi SW | Standard |
| 21911 | Rising Sun, MD | 5.8 mi E | Standard |
| 17563 | Peach Bottom, PA | 6.5 mi N | Standard |
| 21904 | Port Deposit, MD | 6.6 mi SE | Standard |
| 19362 | Nottingham, PA | 7.9 mi NE | Standard |
| 21160 | Whiteford, MD | 8.7 mi W | Standard |
| 21078 | Havre De Grace, MD | 8.9 mi S | Standard |
| 21028 | Churchville, MD | 9.2 mi SW | Standard |
| 21903 | Perryville, MD | 9.4 mi SE | Standard |
| 21902 | Perry Point, MD | 9.7 mi SE | PO Box only |
| 17536 | Kirkwood, PA | 10.8 mi N | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 21918 or measure the distance to another ZIP code.
How to address mail to 21918
123 MAIN ST
CONOWINGO MD 21918
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (21918-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 21918?
- 21918 is a Conowingo, Maryland ZIP code.
- What county is 21918 in?
- ZIP code 21918 is in Cecil County, Maryland.
- What time zone is ZIP code 21918 in?
- 21918 is in the Eastern Time zone (America/New_York).
- What area code is 21918?
- Phone numbers in ZIP code 21918 use area codes 223, 410, 443, 667 and 717.
- What is the population of ZIP code 21918?
- About 4,169 people live in ZIP code 21918, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 21918?
- The median household income in 21918 is $84,587 a year, lower than 70% of Maryland ZIP codes.
- What ZIP codes are near 21918?
- The nearest ZIP codes to 21918 are 21917 (Colora, 3.4 miles), 21034 (Darlington, 4.1 miles), 21911 (Rising Sun, 5.8 miles) and 17563 (Peach Bottom, 6.5 miles).