20878 Gaithersburg
433 active listings out of 25K total properties we track in ZIP 20878 (Gaithersburg, MD) — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.
Download Gaithersburg 20878 property data
24,945 property records for ZIP 20878 — address, beds/baths, sqft, year built, status, list and last-sale price, price and tax history. Parquet or CSV.
Monthly snapshot · 2.8 MB Parquet · CSV (4.6 MB)
Records keep changing after a snapshot is compiled.
Rebuilt every day · same columns, same file layout
While you're here, take in the bigger picture — maps below show Washington, D.C. metro, not just 20878. Same company, same dataset, different resolution.
Over the past 12 months, ZIP 20878 has recorded 594 home sales. In September 2026 there were37 sales (-27.5% vs the prior month). Most recent median sale price: $823K.
- Tracked
- 25K
- Active
- 433
- Median list
- $690K
- Sales (12mo)
- 594
Right now, 433 homes are actively for sale in ZIP 20878. Median list price is $690K at $304/sqft. Hover each hex for micro-neighborhood stats (median price, $/sqft, top property type).
- Tracked
- 25K
- Active
- 433
- Median list
- $690K
- Sales (12mo)
- 594
- Tracked
- 25K
- Active
- 433
- Median list
- $690K
- Sales (12mo)
- 594
- Tracked
- 25K
- Active
- 433
- Median list
- $690K
- Sales (12mo)
- 594
- Tracked
- 25K
- Active
- 433
- Median list
- $690K
- Sales (12mo)
- 594
- Tracked
- 25K
- Active
- 433
- Median list
- $690K
- Sales (12mo)
- 594
Inventory breakdown
Distribution of the 433 currently-active listings in ZIP 20878. Full dataset covers 25K properties — listings, off-market homes, rentals, and full history.
Get Gaithersburg 20878 data in your app
GET https://api.straply.com/v1/markets/zip/20878
Authorization: Bearer $STRAPLY_KEY{
"zip": "20878",
"total_tracked": 25022,
"active": 433,
"median_list": 689900
}Nearby ZIP codes
Other Maryland ZIPs within a short drive of 20878.
ZIP 20878 · Gaithersburg, MD real estate: market summary
As of November 2026, Straply tracks 25,022 homes in ZIP 20878 (Gaithersburg, MD), with 433 active for sale at a median list price of $689,900 (~$304/sq ft). Notably, home prices are climbing — the median sale price is up 14% year over year.
- Median list price
- $689,900
- Median $/sq ft
- $304
- Active listings
- 433
- Median sale price
- $823,200 (+14% YoY)
- Properties tracked
- 25,022
Frequently asked: ZIP 20878 · Gaithersburg, MD real estate
What is the median home price in ZIP 20878?
The median list price in ZIP 20878 (Gaithersburg, MD) is $689,900 (about $304 per square foot), based on 433 active listings tracked by Straply as of November 2026.
What price range are homes in ZIP 20878?
Active listings in ZIP 20878 (Gaithersburg, MD) concentrate in: 27% $500k–$750k and 25% $750k–$1m.
Are home prices in ZIP 20878 going up or down?
The median sale price is $823,200, up 14% year over year. Straply tracked 594 sales here over the past 12 months.
How many homes are for sale in ZIP 20878?
Straply is tracking 433 active listings in ZIP 20878 (Gaithersburg, MD) out of 25,022 properties on record as of November 2026.
How old are the homes in ZIP 20878?
Most homes in ZIP 20878 (Gaithersburg, MD) were built in the 1980s. About 77% were built after 1980. The newest tracked home dates to 2026.
What types of homes are in ZIP 20878?
ZIP 20878 (Gaithersburg, MD) is mostly single-family homes (37% of listings). Also common: townhouses 37%, condos 24%.
How many bedrooms do homes in ZIP 20878 typically have?
The most common size in ZIP 20878 (Gaithersburg, MD) is 3 bd.
What areas are near ZIP 20878?
Nearby markets Straply also tracks include Gaithersburg 20877, Rockville 20850, Washington Grove 20880, Germantown 20874.
Data as of November 2026. Source: Straply. For address-level history and programmatic access, use the Straply API.