Clearlake Oaks is a community in Lake County, California, home to about 2,198 people across 2.0 square miles. Its ZIP code is 95423.
Homes sold for a median of $211 per square foot in the three months ending August 2026, a buyer’s market.
Mostly Clearlake Oaks; also Spring Valley (Lake County)
Each card is that ZIP code’s whole market, including any part outside Clearlake Oaks. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | Sacramento International Airport (SMF)63 miles away |
|---|---|
| Closer regional airport | Charles M. Schulz Sonoma County Airport (STS)39 miles away |
| Nearest city of 250,000+ | Sacramento, CA73 miles away |
| Nearest city of 1 million+ | Los Angeles, CA421 miles away |
Straight-line distances from the center of Clearlake Oaks; 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.
Clearlake Oaks had 2,551 residents in the 2020 census, up 6% since 2000.
It’s the 883rd largest of 1,563 towns in California by population.
Lake County grew from 6,017 residents in 1900 to 68,163 in 2020.
Lake County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 91°F in summer, and winter lows average 33°F. About 30 inches of rain and melted snow fall in a typical year, with about 0 inches of snow.
Source: NOAA 1991–2020 climate normals, Clearlake 4 Se, CA weather station (11 miles away).
10,063 jobs at 1,089 businesses in Lake 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 Clearlake Oaks.
Nearest hospitals
Providers with an office here
| Nurse practitioners and physician assistants | 1 |
|---|---|
| Mental health providers | 20 |
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.
Grocery stores
Counts are within about 1 mile 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 Konocti Unified. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| East LakeClearlake Oaks | K–7 | 195 | Public | 2.7 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Spring Valley (Lake County).
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.