Lake County, California

Lake County population, land area and income

Lake County had 67,764 residents in the Census Vintage 2024 estimate, on 1,255.1 square miles of land. It ranks 41st of 58 in California by population and 38th by land area. That works out to 54.0 people per square mile, below the US average of 96.3, and above the national county median.

The median county-equivalent in California has 187,274 residents, so Lake County has 36% of the typical county's population.

Its SAIPE 2023 median household income of $57,945 is below the national county median among 3,143 counties with an estimate.

How Lake County's population changed since 2020

Lake County lost 436 residents between the July 2020 and July 2024 estimates, a drop of 0.6%. That ranks 30th of 58 in California for growth. The median California county changed by -0.6%, and the state as a whole by -0.2%.

Since the April 2020 estimates base, Lake County recorded 2,937 births and 4,159 deaths, a natural change of -1,222. Net international migration added +374 and net domestic migration, people moving to or from other US counties, came to +504. The largest single component was natural change, which removed 1,222 people.

Where Lake County is

The Census internal point of Lake County is at 39.108000, -122.745200. It sits in UTM zone 10N. The map shades California's 58 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Lake County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Lake County

2 incorporated places of 1,000+ people have residents in Lake County, 21,740 people together, or 32% of the county. Each figure counts only the part of the town inside Lake County; towns marked "part" extend into another county. The largest is Clearlake with 16,636.

Counties bordering Lake County

The Census 2024 county adjacency file lists 6 neighbors for Lake County. The most populous is Sonoma County, CA, with 485,375 residents. Distances run between Census internal points in a straight line.

• Sonoma County

  485,375 people

  41 mi SSW

• Yolo County

  225,251 people

  54 mi ESE

• Napa County

  132,727 people

  47 mi SSE

• Mendocino County

  89,175 people

  44 mi WNW

• Glenn County

  28,304 people

  39 mi NNE

• Colusa County

  22,074 people

  28 mi E

Distance to Sacramento and the nearest big city

Sacramento is 76.7 miles ESE of Lake County's internal point in a straight line. The nearest place of 100,000 or more is Santa Rosa, CA (population 177,524), 45.8 miles away. The nearest place of 10,000 or more is Clearlake, CA (population 16,636), 11.9 miles away.

Lake County FIPS code

The FIPS code of Lake County is 06033: state code 06 for California plus county code 033. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $57,945.