ZIP code 21237
Where is ZIP code 21237?
Rosedale, Maryland
Baltimore County · Standard ZIP code
ZIP code 21237 belongs to Rosedale, Maryland in Baltimore County. 21237 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 410, 443 and 667. About 31,425 people live in the 21237 area, where the median household income is $91,693. The closest ZIP codes are 21206 (Baltimore, 2.1 mi west), 21221 (Essex, 3.2 mi southeast) and 21214 (Baltimore, 3.5 mi west).
| ZIP code | 21237 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Rosedale |
| Also accepted | Baltimore |
| State | Maryland (MD) |
| County | Baltimore County |
| Time zone | Eastern Time · now |
| Area codes | 410, 443, 667 |
| Coordinates | 39.3361, -76.5014 map |
| 3-digit prefix | 212 |
Population and income in 21237
| Population | 31,425 · higher than 84% of Maryland ZIP codes |
|---|---|
| People per square mile | 2,793 · higher than 81% of Maryland ZIP codes |
| Median age | 41.8 years · higher than 50% of Maryland ZIP codes |
| Men / women | 50% / 50% |
| Median household income | $91,693 · lower than 60% of Maryland ZIP codes |
| Income per person | $42,796 |
| Below the poverty line | 8.1% |
| Bachelor’s degree or higher | 27% of adults 25+ |
| Median home value | $295,600 · lower than 77% of Maryland ZIP codes |
| Median rent | $1,606 a month |
| Housing units | 13,121 |
| Households | 12,417 (2.5 people on average) |
| Owners / renters | 62% / 38% |
| Land area | 11.25 sq mi (plus 0.24 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 21237. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 21237
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 21206 | Baltimore, MD | 2.1 mi W | Standard |
| 21221 | Essex, MD | 3.2 mi SE | Standard |
| 21214 | Baltimore, MD | 3.5 mi W | Standard |
| 21236 | Nottingham, MD | 3.9 mi N | Standard |
| 21234 | Parkville, MD | 4.2 mi NW | Standard |
| 21251 | Baltimore, MD | 4.3 mi W | Unique |
| 21224 | Baltimore, MD | 4.5 mi SW | Standard |
| 21213 | Baltimore, MD | 4.6 mi W | Standard |
| 21220 | Middle River, MD | 4.6 mi E | Standard |
| 21205 | Baltimore, MD | 4.9 mi SW | Standard |
| 21222 | Dundalk, MD | 4.9 mi S | Standard |
| 21239 | Baltimore, MD | 5 mi W | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 21237 or measure the distance to another ZIP code.
How to address mail to 21237
123 MAIN ST
ROSEDALE MD 21237
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts BALTIMORE as the city name for 21237. Adding the 4-digit ZIP+4 code (21237-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 21237?
- 21237 is a Rosedale, Maryland ZIP code. Baltimore is also accepted as the city name.
- What county is 21237 in?
- ZIP code 21237 is in Baltimore County, Maryland.
- What time zone is ZIP code 21237 in?
- 21237 is in the Eastern Time zone (America/New_York).
- What area code is 21237?
- Phone numbers in ZIP code 21237 use area codes 410, 443 and 667.
- What is the population of ZIP code 21237?
- About 31,425 people live in ZIP code 21237, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 21237?
- The median household income in 21237 is $91,693 a year, lower than 60% of Maryland ZIP codes.
- What ZIP codes are near 21237?
- The nearest ZIP codes to 21237 are 21206 (Baltimore, 2.1 miles), 21221 (Essex, 3.2 miles), 21214 (Baltimore, 3.5 miles) and 21236 (Nottingham, 3.9 miles).