ZIP code 21204
Where is ZIP code 21204?
Towson, Maryland
Baltimore County · Standard ZIP code
ZIP code 21204 belongs to Towson, Maryland in Baltimore County. 21204 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 19,845 people live in the 21204 area, where the median household income is $99,606. The closest ZIP codes are 21252 (Towson, 0.4 mi south), 21284 (Towson, 0.4 mi south) and 21285 (Towson, 0.4 mi south).
| ZIP code | 21204 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Towson |
| Also accepted | Baltimore, Eudowood, Loch Raven, Ruxton |
| State | Maryland (MD) |
| County | Baltimore County |
| Time zone | Eastern Time · now |
| Area codes | 410, 443, 667 |
| Coordinates | 39.4072, -76.6038 map |
| 3-digit prefix | 212 |
Population and income in 21204
| Population | 19,845 · higher than 73% of Maryland ZIP codes |
|---|---|
| People per square mile | 3,169 · higher than 84% of Maryland ZIP codes |
| Median age | 34.8 years · lower than 88% of Maryland ZIP codes |
| Men / women | 44% / 56% |
| Median household income | $99,606 · lower than 54% of Maryland ZIP codes |
| Income per person | $67,450 |
| Below the poverty line | 15% |
| Bachelor’s degree or higher | 73% of adults 25+ |
| Median home value | $594,800 · higher than 81% of Maryland ZIP codes |
| Median rent | $1,875 a month |
| Housing units | 9,588 |
| Households | 8,747 (2.05 people on average) |
| Owners / renters | 46% / 54% |
| Land area | 6.26 sq mi (plus 0.1 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 21204. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 21204
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 21252 | Towson, MD | 0.4 mi S | Unique |
| 21284 | Towson, MD | 0.4 mi S | PO Box only |
| 21285 | Towson, MD | 0.4 mi S | PO Box only |
| 21286 | Towson, MD | 1.6 mi E | Standard |
| 21094 | Lutherville Timonium, MD | 2.3 mi N | PO Box only |
| 21139 | Riderwood, MD | 2.4 mi W | PO Box only |
| 21212 | Baltimore, MD | 3.1 mi S | Standard |
| 21093 | Lutherville Timonium, MD | 3.3 mi NW | Standard |
| 21239 | Baltimore, MD | 3.3 mi S | Standard |
| 21234 | Parkville, MD | 3.6 mi E | Standard |
| 21022 | Brooklandville, MD | 3.7 mi W | PO Box only |
| 21210 | Baltimore, MD | 4.2 mi S | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 21204 or measure the distance to another ZIP code.
How to address mail to 21204
123 MAIN ST
TOWSON MD 21204
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts BALTIMORE, EUDOWOOD, LOCH RAVEN and RUXTON as the city name for 21204. Adding the 4-digit ZIP+4 code (21204-XXXX) helps mail sort faster but isn’t required.
Other ZIP codes in Towson, MD
All Towson ZIP codes with population and income →
Questions
- What city is ZIP code 21204?
- 21204 is a Towson, Maryland ZIP code. Baltimore, Eudowood, Loch Raven and Ruxton are also accepted as the city name.
- What county is 21204 in?
- ZIP code 21204 is in Baltimore County, Maryland.
- What time zone is ZIP code 21204 in?
- 21204 is in the Eastern Time zone (America/New_York).
- What area code is 21204?
- Phone numbers in ZIP code 21204 use area codes 410, 443 and 667.
- What is the population of ZIP code 21204?
- About 19,845 people live in ZIP code 21204, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 21204?
- The median household income in 21204 is $99,606 a year, lower than 54% of Maryland ZIP codes.
- What ZIP codes are near 21204?
- The nearest ZIP codes to 21204 are 21252 (Towson, 0.4 miles), 21284 (Towson, 0.4 miles), 21285 (Towson, 0.4 miles) and 21286 (Towson, 1.6 miles).