Residential delivery area · Maryland
ZIP Code 21701: Frederick, MD
ZIP code 21701 uses the postal name Frederick, Maryland and lies entirely in Frederick County (Census 2020 ZIP-county file). About 43,000 people live there (Census Bureau, ACS 2020-2024), the 2nd most populous of Frederick's 5 residential ZIP codes. Median household income is $106,577 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Frederick (29%) and Spring Ridge (7%), and 4% in smaller places; 60% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Frederick · 5 residential ZIPs
- County
- Frederick County
- Census places
- Frederick (29%); Spring Ridge (7%) census-designated place
- Neighborhoods
- Brigadoon, Carrollton, Catoctin Park, Field Pointe, Fredericktowne Village, Maplewood and 6 more GeoNames
- Metro area
- Washington-Arlington-Alexandria, DC-VA-MD-WV
- House district
- MD-6 119th Congress
- State
- Maryland
- Time zone
- Eastern
- Land area
- 39.7 sq mi · 1,084 people per sq mi
- PO Box ZIPs
- 21709 also use the name Frederick
Where is ZIP code 21701?
21701 centers on 39.444°, -77.333° and covers 39.7 square miles of land plus 0.6 of water. It borders 12 ZIP codes: 21793, 21774, 21705, 21762, 21702, 21704, 21798, 21754, 21703, 21791 and more.
The map draws ZIP code areas only. For the streets inside 21701, 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 21701 compare with the rest of Frederick?
| Measure | 21701 | In Frederick | In Frederick County | In MD |
|---|---|---|---|---|
| People (ACS 2020-2024) | 43,048 | 2nd of 5 | 2nd of 35 | 33rd of 477 |
| Median household income | $107k | 3rd of 4 | 18th of 26 | 158th of 293 |
| Median home value | $435k | 2nd of 4 | 18th of 28 | 152nd of 320 |
Its median household income is higher than in 85% of U.S. residential ZIP codes, and it is denser than 79% 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 21701?
The 2020 Census counted 39,629 people in 21701; the ACS, which samples households over 2020-2024, estimates 43,048. Between the 2010 and 2020 censuses its population grew 12.3% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 43,048
- 2020 Census count
- 39,629+12.3% since 2010 (35,293)
- Households
- 18,651
- Median age
- 39.6
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 21701?
Of the 43,048 people the ACS estimates in 21701, 18.4% are under 18 and 18.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (68.6%), then Black (not Hispanic) (11.2%).
- Under 1818.4%
- 18 to 6463.4%
- 65 and older18.2%
- White, not Hispanic68.6%
- Black, not Hispanic11.2%
- Hispanic or Latino9.7%
- Other or two or more6.3%
- Asian, not Hispanic4.1%
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 21701 earn?
Median household income is $106,577 (ACS 2020-2024), the 18th highest of the 26 ranked ZIP codes in Frederick County. It is not measurably different from 2015-2019 ($102,533 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $106,577
- Income per person
- $60,194
- Below the poverty line
- 7.1%
- Unemployed (of the labor force)
- 3.8%
- Adults 25+ with a bachelor's degree
- 50.1%
- Adjusted gross income per tax return, 2022
- $94,41821,520 returns; wages 73% 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 21701?
FHFA's house price index for 21701, built from repeat sales and appraisals of the same homes, rose 77% from 2015 to 2025 and rose 44% from 2020 to 2025, and moved −0.2% in 2025.
- Median home value (owners' estimate)
- $435,000
- Median gross rent
- $1,672
- Homes owned by their occupants
- 66.2%
- Housing units
- 19,513
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 21701?
1,616 business establishments had a location in this ZIP code in 2023, 10 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services278
- Retail trade200
- Health care and social assistance200
- Accommodation and food services161
- Other services (except public administration)151
- Finance and insurance121
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 21701?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 21793 | Walkersville | 10,719 | $122k | 3.2 mi |
| 21774 | New Market | 17,134 | $171k | 3.9 mi |
| 21705 | Frederick | 6 | – | 4.8 mi |
| 21762 | Libertytown | 139 | – | 5.2 mi |
| 21702 | Frederick | 49,605 | $107k | 6.4 mi |
| 21704 | Frederick | 20,006 | $161k | 6.5 mi |
| 21798 | Woodsboro | 2,928 | $117k | 6.8 mi |
| 21754 | Ijamsville | 8,156 | $182k | 7.8 mi |
| 21703 | Frederick | 41,960 | $106k | 9.2 mi |
| 21791 | Union Bridge | 5,340 | $93k | 9.9 mi |
| 21771 | Mount Airy | 33,031 | $157k | 9.9 mi |
| 21788 | Thurmont | 11,654 | $99k | 11.0 mi |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.