Cottage Lake is a community in King County, Washington, home to about 22,518 people across 23 square miles. Its ZIP code is 98077, and parts of 98019, 98052 and 98072 are in Cottage Lake too.
Homes sold for a median of $546 per square foot in the three months ending August 2026, a seller’s market.
Mostly Cottage Lake; also Union Hill-Novelty Hill and Maltby
Mostly Duvall; part is in Cottage Lake
Mostly Redmond; part is in Cottage Lake
Mostly Woodinville; part is in Cottage Lake
Each card is that ZIP code’s whole market, including any part outside Cottage Lake. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Cottage Lake’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Seattle–Tacoma International Airport (SEA)23 miles away |
|---|---|
| Closer regional airport | Seattle Paine Field International Airport (PAE)14 miles away |
| Nearest city of 250,000+ | Seattle, WA16 miles away |
Straight-line distances from the center of Cottage Lake; 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.
Cottage Lake had 22,857 residents in the 2020 census, down 6% since 2000.
It’s the 62nd largest of 628 towns in Washington by population.
King County grew from 110,053 residents in 1900 to 2,269,675 in 2020.
King County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 75°F in summer, and winter lows average 32°F. About 50.8 inches of rain and melted snow fall in a typical year, with about 3 inches of snow.
Source: NOAA 1991–2020 climate normals, Monroe, WA weather station (8 miles away).
1,305,947 jobs at 70,376 businesses in King County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
21 doctors and other health care providers list an office in Cottage Lake.
Nearest hospitals
Providers with an office here
| Primary care doctors | 1 |
|---|---|
| Dentists | 6 |
| Mental health providers | 7 |
| Physical and occupational therapists | 6 |
| Chiropractors | 1 |
| Pharmacies | 2 |
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 (13 nearby)
Grocery stores (1 nearby)
Pharmacies (2 nearby)
Libraries (1 nearby)
Museums
Theaters and performance venues
Counts are within about 3.5 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 Northshore School District, Lake Washington School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Bear Creek ElementaryWoodinville | Pre-K–5 | — | Public | 0.7 mi |
| Cottage Lake ElementaryWoodinville | Pre-K–5 | 258 | Public | 0.4 mi |
| East Ridge ElementaryWoodinville | Pre-K–5 | 427 | Public | 1.8 mi |
| Laura Ingalls Wilder ElementaryWoodinville | Pre-K–5 | 315 | Public | 2.8 mi |
| Northshore Family PartnershipWoodinville | K–8 | — | Public | 0.7 mi |
| Northshore Learning OptionsWoodinville | K–12 | 428 | Alternative Education | 0.7 mi |
| Northshore NetworksWoodinville | K–12 | — | Alternative Education | 0.7 mi |
| Timbercrest Middle SchoolWoodinville | 6–8 | 665 | Public | 1.7 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| The Madrone SchoolWoodinville | Ungraded | 8 | Nonsectarian | 0.1 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 Redmond, Woodinville, Duvall, Maltby and Union Hill-Novelty Hill.
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.