Residential delivery area · Maryland
ZIP Code 21703: Frederick, MD
ZIP code 21703 uses the postal name Frederick, Maryland and lies entirely in Frederick County (Census 2020 ZIP-county file). About 42,000 people live there (Census Bureau, ACS 2020-2024), the 3rd most populous of Frederick's 5 residential ZIP codes. Median household income is $106,334 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Ballenger Creek (21%), Braddock Heights (11%) and Frederick (7%); 61% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Frederick · 5 residential ZIPs
- County
- Frederick County
- Census places
- Ballenger Creek (21%) census-designated place; Braddock Heights (11%) census-designated place; Frederick (7%)
- Neighborhoods
- Frederick Heights, Golf View, Hillcrest Orchard, Linden Hills, Monarch Ridge, Overlook GeoNames
- Metro area
- Washington-Arlington-Alexandria, DC-VA-MD-WV
- House district
- MD-6 119th Congress
- State
- Maryland
- Time zone
- Eastern
- Land area
- 32.0 sq mi · 1,310 people per sq mi
- PO Box ZIPs
- 21709 also use the name Frederick
Where is ZIP code 21703?
21703 centers on 39.367°, -77.473° and covers 32.0 square miles of land plus 0.0 of water. It borders 7 ZIP codes: 21717, 21714, 21710, 21755, 21704, 21702, 21701.
The map draws ZIP code areas only. For the streets inside 21703, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0); neighborhoods from the GeoNames gazetteer (CC BY 4.0), placed in this ZIP code by PlainZIP.
How does 21703 compare with the rest of Frederick?
| Measure | 21703 | In Frederick | In Frederick County | In MD |
|---|---|---|---|---|
| People (ACS 2020-2024) | 41,960 | 3rd of 5 | 3rd of 35 | 36th of 477 |
| Median household income | $106k | 4th of 4 | 19th of 26 | 159th of 293 |
| Median home value | $385k | 4th of 4 | 21st of 28 | 197th of 320 |
Its median household income is higher than in 85% of U.S. residential ZIP codes, and it is denser than 81% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 21703?
The 2020 Census counted 41,138 people in 21703; the ACS, which samples households over 2020-2024, estimates 41,960. Between the 2010 and 2020 censuses its population grew 25.2% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 41,960
- 2020 Census count
- 41,138+25.2% since 2010 (32,854)
- Households
- 15,517
- Median age
- 34.6
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 21703?
Of the 41,960 people the ACS estimates in 21703, 26.1% are under 18 and 11.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (46.3%), then Black (not Hispanic) (18.9%).
- Under 1826.1%
- 18 to 6462.9%
- 65 and older11.0%
- White, not Hispanic46.3%
- Black, not Hispanic18.9%
- Hispanic or Latino18.7%
- Asian, not Hispanic8.9%
- Other or two or more7.2%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 21703 earn?
Median household income is $106,334 (ACS 2020-2024), the 19th highest of the 26 ranked ZIP codes in Frederick County. It is not measurably different from 2015-2019 ($111,379 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $106,334
- Income per person
- $45,809
- Below the poverty line
- 8.6%
- Unemployed (of the labor force)
- 3.0%
- Adults 25+ with a bachelor's degree
- 43.0%
- Adjusted gross income per tax return, 2022
- $80,89022,810 returns; wages 77% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 21703?
FHFA's house price index for 21703, built from repeat sales and appraisals of the same homes, rose 73% from 2015 to 2025 and rose 47% from 2020 to 2025, and moved +2.5% in 2025.
- Median home value (owners' estimate)
- $384,600
- Median gross rent
- $1,991
- Homes owned by their occupants
- 66.5%
- Housing units
- 16,069
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 21703?
900 business establishments had a location in this ZIP code in 2023, 99 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services118
- Retail trade99
- Health care and social assistance98
- Construction96
- Other services (except public administration)79
- Accommodation and food services75
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 21703?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 21717 | Buckeystown | 245 | $158k | 3.0 mi |
| 21714 | Braddock Heights | 95 | $162k | 3.6 mi |
| 21710 | Adamstown | 4,661 | $164k | 4.6 mi |
| 21755 | Jefferson | 5,909 | $137k | 5.1 mi |
| 21704 | Frederick | 20,006 | $161k | 5.3 mi |
| 21702 | Frederick | 49,605 | $107k | 7.9 mi |
| 21701 | Frederick | 43,048 | $107k | 9.2 mi |
| 21705 | Frederick | 6 | – | 4.5 mi (near) |
| 21777 | Point Of Rocks | 2,462 | $160k | 6.7 mi (near) |
| 21769 | Middletown | 11,965 | $152k | 7.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.