ZIP code 21704
Where is ZIP code 21704?
Frederick, Maryland
Frederick County · Standard ZIP code
ZIP code 21704 belongs to Frederick, Maryland in Frederick County. 21704 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 227, 240 and 301. About 20,006 people live in the 21704 area, where the median household income is $161,063. The closest ZIP codes are 21717 (Buckeystown, 2.6 mi southwest), 21703 (Frederick, 4.5 mi west) and 21754 (Ijamsville, 4.8 mi east).
| ZIP code | 21704 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Frederick |
| Also accepted | Urbana |
| State | Maryland (MD) |
| County | Frederick County |
| Time zone | Eastern Time · now |
| Area codes | 227, 240, 301 |
| Coordinates | 39.3455, -77.3832 map |
| 3-digit prefix | 217 |
Population and income in 21704
| Population | 20,006 · higher than 73% of Maryland ZIP codes |
|---|---|
| People per square mile | 751 · higher than 62% of Maryland ZIP codes |
| Median age | 38.6 years · lower than 69% of Maryland ZIP codes |
| Men / women | 53% / 47% |
| Median household income | $161,063 · higher than 85% of Maryland ZIP codes |
| Income per person | $59,928 |
| Below the poverty line | 2.9% |
| Bachelor’s degree or higher | 57% of adults 25+ |
| Median home value | $612,000 · higher than 83% of Maryland ZIP codes |
| Median rent | $2,536 a month |
| Housing units | 6,257 |
| Households | 6,136 (3.21 people on average) |
| Owners / renters | 82% / 18% |
| Land area | 26.63 sq mi (plus 0.17 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 21704. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 21704
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 21717 | Buckeystown, MD | 2.6 mi SW | PO Box only |
| 21703 | Frederick, MD | 4.5 mi W | Standard |
| 21754 | Ijamsville, MD | 4.8 mi E | Standard |
| 21705 | Frederick, MD | 5 mi N | PO Box only |
| 21710 | Adamstown, MD | 5.4 mi SW | Standard |
| 21770 | Monrovia, MD | 7.2 mi E | Standard |
| 21774 | New Market, MD | 7.2 mi NE | Standard |
| 21701 | Frederick, MD | 7.4 mi N | Standard |
| 21714 | Braddock Heights, MD | 8.3 mi NW | PO Box only |
| 20838 | Barnesville, MD | 8.5 mi S | Standard |
| 21709 | Frederick, MD | 8.6 mi N | Unique |
| 21790 | Tuscarora, MD | 8.7 mi SW | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 21704 or measure the distance to another ZIP code.
How to address mail to 21704
123 MAIN ST
FREDERICK MD 21704
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts URBANA as the city name for 21704. Adding the 4-digit ZIP+4 code (21704-XXXX) helps mail sort faster but isn’t required.
Other ZIP codes in Frederick, MD
All Frederick ZIP codes with population and income →
Questions
- What city is ZIP code 21704?
- 21704 is a Frederick, Maryland ZIP code. Urbana is also accepted as the city name.
- What county is 21704 in?
- ZIP code 21704 is in Frederick County, Maryland.
- What time zone is ZIP code 21704 in?
- 21704 is in the Eastern Time zone (America/New_York).
- What area code is 21704?
- Phone numbers in ZIP code 21704 use area codes 227, 240 and 301.
- What is the population of ZIP code 21704?
- About 20,006 people live in ZIP code 21704, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 21704?
- The median household income in 21704 is $161,063 a year, higher than 85% of Maryland ZIP codes.
- What ZIP codes are near 21704?
- The nearest ZIP codes to 21704 are 21717 (Buckeystown, 2.6 miles), 21703 (Frederick, 4.5 miles), 21754 (Ijamsville, 4.8 miles) and 21705 (Frederick, 5 miles).