Frederick, MD ZIP Codes
5 ZIP codes serve Frederick, Maryland: 21702, 21701, 21703, 21704 and 21705. Together they are home to 154,625 residents in 58,829 households. That is more than the 83,395 people counted inside Frederick city limits, because these ZIP codes reach past its boundary. Median household income ranges from $106,334 in 21703 to $161,063 in 21704.
Frederick city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 83,395 |
| Households | 33,584 |
| Median household income | $97,069 |
| Median home value | $401,500 |
| Median age | 37.1 |
| Median rent | $1,764 |
All 5 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 154,625 |
| Households (sum of ZIP codes) | 58,829 |
| Median household income, range across ZIP codes | $106,334 (21703) to $161,063 (21704) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $112,324 |
| Homeowners | 67.6% |
| Households with kids under 18 | 36.3% |
| Moved in the past year | 12.4% |
| Carrier routes in EDDM2GO's route library | 80 routes, 47,999 homes (3 of 5 ZIP codes) |
Top facts
- Highest median household income in Frederick: 21704 ($161,063)
- Most residents: 21702 (49,605 people)
- Highest homeownership: 21704 (82.0% own their home)
- Most households with kids: 21704 (56.4% of households)
- Most new movers: 21703 (13.1% moved in last year)
- Youngest median age: 21703 (34.6 years)
- Highest median home value: 21704 ($612,000)
Every ZIP code in Frederick
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 21702 | Frederick | 49,605 | 18,525 | $106,983 | $426,300 | 65.2% | 34.6% | 12.6% | 31 | 20,856 | 24% of its land; mailing city |
| 21701 | Frederick | 43,048 | 18,651 | $106,577 | $435,000 | 66.2% | 26.4% | 12.9% | 35 | 22,204 | 29% of its land; mailing city |
| 21703 | Frederick | 41,960 | 15,517 | $106,334 | $384,600 | 66.5% | 42.1% | 13.1% | — | — | mailing city |
| 21704 | Frederick | 20,006 | 6,136 | $161,063 | $612,000 | 82.0% | 56.4% | 9.0% | 14 | 8,720 | mailing city |
| 21705 | Frederick | 6 | 0 | — | — | — | — | 16.7% | — | — | 100% of its land; mailing city |
A ZIP code is listed for Frederick when at least 10% of its land lies inside Frederick city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Frederick. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Frederick.
Counties
- Frederick County — 33 ZIP codes
Nearby cities sharing these ZIP codes
- Spring Ridge — 1 ZIP code
- Ballenger Creek — 2 ZIP codes
- Urbana — 2 ZIP codes
Price a mailing to Frederick ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Frederick, MD?
- 21702, 21701, 21703, 21704 and 21705. A ZIP code is listed for Frederick when at least 10% of its land lies inside Frederick city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Frederick.
- What is the population of Frederick, MD?
- The Census Bureau counts 83,395 residents inside Frederick city limits (ACS 2020–2024). The 5 ZIP codes that serve Frederick hold 154,625 residents in all.
- What is the median household income in Frederick, MD?
- $97,069 inside Frederick city limits, per the Census Bureau. Across its ZIP codes the medians run from $106,334 to $161,063.
- Which Frederick ZIP code has the highest median household income?
- 21704, at $161,063, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Frederick, MD?
- For the 3 of 5 ZIP codes in EDDM2GO's stored route library: 80 carrier routes reaching 47,999 residential and 3,789 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.