Countryside is a community in Loudoun County, Virginia, home to about 9,661 people across 2.6 square miles. It has no ZIP code of its own: it’s part of 20165.
Homes sold for a median of $295 per square foot in the three months ending August 2026, a seller’s market.
Mostly Cascades; part is in Countryside
Each card is that ZIP code’s whole market, including any part outside Countryside. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Countryside’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Washington Dulles International Airport (IAD)8 miles away |
|---|---|
| Nearest city of 250,000+ | Washington, DC22 miles away |
| Nearest city of 1 million+ | Philadelphia, PA137 miles away |
Straight-line distances from the center of Countryside; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Countryside had 10,418 residents in the 2020 census, up 3% since 2010.
It’s the 132nd largest of 669 towns in Virginia by population.
Loudoun County grew from 21,948 residents in 1900 to 420,959 in 2020.
Loudoun County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 87°F in summer, and winter lows average 25°F. About 45.1 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Wfo Sterling, VA weather station (7 miles away).
192,220 jobs at 12,561 businesses in Loudoun County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
284 doctors and other health care providers list an office in Countryside.
Nearest hospitals
Providers with an office here
| Primary care doctors | 22 |
|---|---|
| Specialist doctors | 25 |
| Dentists | 70 |
| Nurse practitioners and physician assistants | 34 |
| Mental health providers | 73 |
| Physical and occupational therapists | 32 |
| Optometrists | 4 |
| Chiropractors | 24 |
| Pharmacies | 4 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (10 nearby)
Grocery stores (1 nearby)
Pharmacies
Libraries (1 nearby)
Museums
Theaters and performance venues
Counts are within about 1.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Loudoun County Public Schools. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Algonkian ElementarySterling | Pre-K–5 | 457 | Public | 1.4 mi |
| Countryside ElementarySterling | Pre-K–5 | 648 | Public | 1.5 mi |
| Horizon ElementarySterling | Pre-K–5 | 510 | Public | 0.1 mi |
| Lowes Island ElementarySterling | Pre-K–5 | 528 | Public | 2.0 mi |
| Potowmack ElementarySterling | Pre-K–5 | 568 | Public | 0.7 mi |
| River Bend MiddleSterling | 6–8 | 1,137 | Public | 0.7 mi |
| Potomac Falls HighPotomac Falls | 9–12 | 1,662 | Public | 0.4 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| The Learning Village SchoolPotomac Falls | Pre-K–1 | 9 | Nonsectarian | 2.0 mi |
| Our Lady of Hope Catholic SchoolPotomac Falls | K–8 | 220 | Roman Catholic | 0.3 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Cascades and Lowes Island.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.