Home values, rents and more in ZIP code 20877 (Gaithersburg, MD)
September 2026 figures from Zillow and the U.S. Census Bureau · updated 2026-11-07
Open 20877 in ProMap- Under $470k
- $470k–$530k
- $530k–$650k
- $650k–$790k
- $790k+
- No data
How 20877 compares
The typical home in ZIP code 20877 (Gaithersburg, MD) is worth about $468,000, according to the Zillow Home Value Index for September 2026. Home values in 20877 are 18% below the typical value in the Washington metro area ($570,000) and 28% above the U.S. typical value ($366,000).
Over the past year, home values in 20877 fell 1.9%, compared with +0.2% in the Washington metro area and +1.2% nationally.
Typical rent is $2,051 a month (Zillow Observed Rent Index), 15% below the Washington metro area ($2,407) and 6% above the U.S. ($1,932). Rents rose 1.7% over the past year.
The median household income is $92,800, against $126,684 in the Washington metro area and $80,734 in the U.S. (Census Bureau, American Community Survey 2020–24).
About 38,546 people live in 20877 (American Community Survey 2020–24).
20877 has the 80th-lowest typical home value of the 290 ZIP codes in the Washington metro area and the 179th-highest of 423 in Maryland with Zillow figures.
Part of: Gaithersburg, MD · Montgomery County, MD · Washington metro area · Maryland
More for 20877 in ProMap Plus
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- 5- and 10-year price changes
- Days on market and months of supply
- Price cuts and sale-to-list ratio
- Price-to-income and monthly cost to buy
- Zillow 12-month price forecast
- Crime rates
- School test scores
- Homeowners insurance premiums
- Commute time to downtown
- Flood, wildfire and natural hazard risk
- Property-tax rate
- 2024 presidential vote
- Age, education and household make-up
- Amenities and transit nearby
Nearby ZIP codes
Sources
Home values: Zillow Home Value Index (ZHVI), all homes, middle tier, smoothed and seasonally adjusted, September 2026. Rents: Zillow Observed Rent Index (ZORI), seasonally adjusted. Population: Census population estimates (July 2025) for states, metros and counties; ACS 2020–24 for cities and ZIP codes. Income: U.S. Census Bureau, ACS 2020–24 5-year estimates. Boundaries: U.S. Census Bureau cartographic boundary files. Compiled by Home Economics.
"Typical" is Zillow's middle-tier value (homes between the 35th and 65th percentiles), not a median sale price. Changes are over the 12 months to September 2026.