Zip Code 21703
Frederick, Maryland — Frederick County
📍 ZIP code 21703 is in Frederick, Frederick County, Maryland.
ZIP code 21703 is located in Frederick, Frederick County, Maryland. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 41,766. The area code for ZIP code 21703 is 301.
Quick Answer
Zip code 21703 is in Frederick, Maryland (Frederick County). It has a population of 41,766, median household income of $105,293, and median home value of $364,300.
Population
41,766
Income
$105,293
Home Value
$364,300
Climate
89°F / 27°F
About Zip Code 21703
Zip code 21703 is located in Frederick, Maryland, within Frederick County. Home to approximately 41,766 residents, this area sits at an elevation of 381 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 301.
The median household income is $105,293 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $364,300, and the cost of living index is 129 (29% above the national average of 100).
Summers average a high of 89°F while winters drop to 27°F. The area receives about 44 in of rain and 8 in of snow annually. The zip code covers 33.3 square miles of land area.
Key Statistics
41,766
$105,293
$364,300
Eastern (EST/EDT)
301
381 ft
33.3 sq mi
34.8
15,773
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Compare With Nearby Zip Codes
| Metric | 21703 | 21717 | 21710 | 21755 | 21704 | 21777 |
|---|---|---|---|---|---|---|
| City | Frederick, MD | Buckeystown, MD | Adamstown, MD | Jefferson, MD | Frederick, MD | Point of Rocks, MD |
| Population | 41,766 | 296 | 4,901 | 5,740 | 19,623 | 2,333 |
| Median Income | $105,293 | $153,030 | $164,727 | $134,677 | $164,457 | $136,827 |
| Home Value | $364,300 | $430,000 | $582,100 | $493,700 | $585,900 | $441,300 |
| Cost of Living | 129 | 90 | 204 | 168 | 206 | 153 |
| Median Age | 34.8 | 33.1 | 51.4 | 44.1 | 38.4 | 43.6 |
Cost of Living
100 = National Average. Frederick's cost of living is 29% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
3.5x
Demographics
Zip code 21703 has a population of 41,766 people with a median age of 34.8. There are 15,773 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Frederick (21703) population trend from 2010 to 2024
↓ -12.4%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
89°F
27°F
44 in
8 in
Frederick experiences warm summers with average highs around 89°F. Winters are cool with lows averaging 27°F. The area receives about 8 in of snow per year.
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Housing & Economy
Median Home Value
$364,300
Median Household Income
$105,293
With 15,773 housing units across 33.3 square miles, 21703 has a housing density of 474 units per square mile. The home price-to-income ratio is 3.5x.
Location & Geography
Latitude
39.3670°
Longitude
-77.4735°
Land Area
33.3 sq mi
Water Area
0 sq mi
Nearby Zip Codes
Zip codes closest to 21703 (Frederick, MD) with distances:
All Zip Codes in Frederick, MD
Other zip codes serving Frederick:
Related Cities in Maryland
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 21703's $105,293. A way to compare Frederick to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 21703 (Frederick, MD). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Frederick, Maryland?
Frederick, Maryland uses zip code 21703 along with 3 other zip codes.
What county is zip code 21703 in?
Zip code 21703 is located in Frederick County, Maryland.
What is the population of zip code 21703?
The population of zip code 21703 is 41,766 with a median age of 34.8.
Is 21703 in Frederick, Maryland?
Yes, zip code 21703 is in Frederick, Frederick County, Maryland. The area code is 301.
Frequently Asked Questions
What city is zip code 21703 in?
Zip code 21703 is in Frederick, Maryland. It is part of Frederick County and uses the Eastern (EST/EDT) timezone.
What is zip code 21703?
Zip code 21703 is a U.S. postal code in Frederick, Maryland (Frederick County). It has a population of 41,766 and covers 33.3 square miles.
What is the population of zip code 21703?
The population of zip code 21703 (Frederick, MD) is 41,766 with a median age of 34.8. There are approximately 15,773 housing units in this area.
What is the median income in zip code 21703?
The median household income in zip code 21703 (Frederick, MD) is $105,293 per year. The cost of living index is 129 (100 = national average).
What is the average home price in zip code 21703?
The median home value in zip code 21703 (Frederick, MD) is $364,300. The cost of living index is 129 compared to the national average of 100.
What county is zip code 21703 in?
Zip code 21703 is located in Frederick County, Maryland. The primary city is Frederick.
What is the area code for zip code 21703?
Zip code 21703 in Frederick, MD uses area code 301. It is located in the Eastern (EST/EDT) timezone.
Is zip code 21703 a good place to live?
Zip code 21703 (Frederick, MD) has a cost of living index of 129 (100 = national average), a median household income of $105,293, and median home values of $364,300. The median age is 34.8. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 21703?
The cost of living index for zip code 21703 (Frederick, MD) is 129, where 100 represents the national average. This area is above the national average. Median home value: $364,300.
What schools serve zip code 21703?
Zip code 21703 in Frederick, Maryland is served by the local school district of Frederick County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.