U.S. ZIP Code · MD21770
Frederick County · Washington-Arlington-Alexandria, DC-VA-MD-WV
Appreciation
- 1-year
- +0.4%
- 5-year / yr
- +4.6%
- 10-year / yr
- +4.5%
Relative price
- vs U.S.
- +136.0%
- vs metro
- +14.2%
- vs state
- +48.8%
Price history
Zillow Home Value Index — monthly, smoothed and seasonally adjusted.
The typical home in 21770 is worth $670,487 — 14.2% above the Washington-Arlington-Alexandria, DC-VA-MD-WV median. Over the past year, values have risen 0.4%. The effective property tax rate is 0.8%.
#Rent & investment
Typical asking rent, and the returns it implies at the current home value.
#Property tax
Effective rate — total real estate taxes paid relative to total home value.
#Climate risk
FEMA National Risk Index ratings for Frederick County. "Not Applicable" means the hazard does not threaten the county.
- Overall risk
- Relatively Low[4]
- Riverine flood
- Relatively Moderate
- Coastal flood
- Not Applicable
- Wildfire
- Very Low
- Drought
- Relatively Moderate
- Heat wave
- Relatively Moderate
- Hurricane
- Relatively Low
- Tornado
- Relatively Moderate
- Earthquake
- Relatively Low
- Winter weather
- Relatively High
#Who lives here
#Migration
Household moves in and out of Frederick County over a year, from IRS tax-return data.
- Net migration
- +798[5]
- Moved in
- 8,716
- Moved out
- 7,918
Schools
Open public schools in this ZIP, from the NCES Common Core of Data.
- Public schools
- 2
- Elementary
- 2
- Middle
- 0
- High
- 0
Green Valley Elementary
Elementary · Grades K–5 · Frederick County Public Schools
839 students
Kemptown Elementary
Elementary · Grades K–5 · Frederick County Public Schools
436 students
Run the numbers
Interactive calculators pre-filled with this ZIP's typical home value, rent, and property-tax rate. Edit any field to recompute.
Gross and net yield are estimates based on the inputs and the selected expense ratio. Actual income and expenses will vary by property and market. Not investment advice.
Estimated monthly payments include principal and interest only. Actual costs will include property tax, insurance, possibly PMI, and HOA fees not modeled here. Loan terms shown are estimates; consult a licensed lender for current rates and qualification.
This calculator projects multi-year scenarios based on assumptions about appreciation, rent growth, and investment returns — none of which are guaranteed. Actual outcomes depend on variables this tool cannot know. Not financial or real estate advice.
#Metro ranking
Where this ZIP sits among others in its metro area.
Frequently asked
- How much is a home worth in ZIP code 21770?
- The typical home in 21770 is worth $670,487, based on the Zillow Home Value Index.
- Are home values rising in 21770?
- Home values in 21770 are up 0.4% over the past year, and up 4.6% a year over five years.
- What is the property tax rate in 21770?
- The effective property tax rate in 21770 is 0.8% — roughly $5,523 a year on a typical home.
- Who lives in 21770?
- ZIP code 21770 has a population of 8,751 and a median household income of $183,571.
#Comparable ZIPs
Same metro, nearest typical home value. Each card shows the comparable ZIP's headline numbers so you can scan at a glance.
Olney CDP, MD
- Typical home
- $669,452
- Gross yield
- 4.8%
Adamstown CDP, MD
- Typical home
- $669,109
- Gross yield
- —
Washington, VA
- Typical home
- $665,310
- Gross yield
- —
Rose Hill CDP, VA
- Typical home
- $677,043
- Gross yield
- 4.9%
Calverton CDP, VA
- Typical home
- $661,954
- Gross yield
- —
Silver Spring CDP, MD
- Typical home
- $661,810
- Gross yield
- 3.7%
Want similar ZIPs from outside this metro? Browse nationally similar ZIPs →
Compare ZIPs
Pit ZIP 21770 against any other ZIP — full side-by-side table.
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