20171 Herndon
289 active listings out of 17K total properties we track in ZIP 20171 (Herndon, VA) — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.
Download Herndon 20171 property data
16,632 property records for ZIP 20171 — address, beds/baths, sqft, year built, status, list and last-sale price, price and tax history. Parquet or CSV.
Monthly snapshot · 1.9 MB Parquet · CSV (3.0 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 20171. Same company, same dataset, different resolution.
Over the past 12 months, ZIP 20171 has recorded 417 home sales. In September 2026 there were42 sales (+10.5% vs the prior month). Most recent median sale price: $725K.
- Tracked
- 17K
- Active
- 289
- Median list
- $677K
- Sales (12mo)
- 417
Right now, 289 homes are actively for sale in ZIP 20171. Median list price is $677K at $345/sqft. Hover each hex for micro-neighborhood stats (median price, $/sqft, top property type).
- Tracked
- 17K
- Active
- 289
- Median list
- $677K
- Sales (12mo)
- 417
- Tracked
- 17K
- Active
- 289
- Median list
- $677K
- Sales (12mo)
- 417
- Tracked
- 17K
- Active
- 289
- Median list
- $677K
- Sales (12mo)
- 417
- Tracked
- 17K
- Active
- 289
- Median list
- $677K
- Sales (12mo)
- 417
- Tracked
- 17K
- Active
- 289
- Median list
- $677K
- Sales (12mo)
- 417
Inventory breakdown
Distribution of the 289 currently-active listings in ZIP 20171. Full dataset covers 17K properties — listings, off-market homes, rentals, and full history.
Get Herndon 20171 data in your app
GET https://api.straply.com/v1/markets/zip/20171
Authorization: Bearer $STRAPLY_KEY{
"zip": "20171",
"total_tracked": 16674,
"active": 289,
"median_list": 677000
}Nearby ZIP codes
Other Virginia ZIPs within a short drive of 20171.
ZIP 20171 · Herndon, VA real estate: market summary
As of November 2026, Straply tracks 16,674 homes in ZIP 20171 (Herndon, VA), with 289 active for sale at a median list price of $677,000 (~$345/sq ft). Notably, home prices are climbing — the median sale price is up 8% year over year.
- Median list price
- $677,000
- Median $/sq ft
- $345
- Active listings
- 289
- Median sale price
- $725,000 (+8% YoY)
- Properties tracked
- 16,674
Frequently asked: ZIP 20171 · Herndon, VA real estate
What is the median home price in ZIP 20171?
The median list price in ZIP 20171 (Herndon, VA) is $677,000 (about $345 per square foot), based on 289 active listings tracked by Straply as of November 2026.
What price range are homes in ZIP 20171?
Active listings in ZIP 20171 (Herndon, VA) concentrate in: 40% $500k–$750k and 28% $750k–$1m.
Are home prices in ZIP 20171 going up or down?
The median sale price is $725,000, up 8% year over year. Straply tracked 417 sales here over the past 12 months.
How many homes are for sale in ZIP 20171?
Straply is tracking 289 active listings in ZIP 20171 (Herndon, VA) out of 16,674 properties on record as of November 2026.
How old are the homes in ZIP 20171?
Most homes in ZIP 20171 (Herndon, VA) were built in the 1980s. About 88% were built after 1980. The newest tracked home dates to 2026.
What types of homes are in ZIP 20171?
ZIP 20171 (Herndon, VA) is mostly townhouses (47% of listings). Also common: condos 26%, single-family homes 25%.
How many bedrooms do homes in ZIP 20171 typically have?
The most common size in ZIP 20171 (Herndon, VA) is 3 bd.
What areas are near ZIP 20171?
Nearby markets Straply also tracks include Reston 20191, Herndon 20170, Reston 20190, Chantilly 20151.
Data as of November 2026. Source: Straply. For address-level history and programmatic access, use the Straply API.