Janesville, California Demographics & Population 2026
During the 2020–2024 ACS period, Janesville, California had a total population of 2,399, the 860th largest community in California, with a median household income of $78,466, which is 21% lower than the state average. The poverty rate is 7.5%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Near full employment with an unemployment rate of just 2.4%.
Janesville Quick Facts
How Janesville Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 2,447 | 2,399 | -2.0% |
| Median household income | $70,938 | $78,466 | +10.6% |
| Median home value | $289,400 | $326,900 | +13.0% |
How Janesville Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 70 | National average: 61
Education
Educational Attainment (Adults 25+)
Janesville Rankings in California
Explore California Rankings
Other Cities in Lassen County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Susanville | 14,177 | $61,641 | 17.6% | $235,500 |
| Westwood | 1,063 | $59,375 | 21.7% | $147,000 |
| Johnstonville | 1,039 | $100,132 | 15.9% | $329,300 |
| Doyle | 779 | $44,881 | 25.3% | $232,400 |
| Patton Village | 473 | $100,972 | 23.3% | $73,900 |
| Spaulding | 369 | $24,620 | 40.1% | N/A |
| Bieber | 266 | N/A | 7.1% | $142,600 |
| Herlong | 211 | $56,875 | 19.9% | N/A |
| Clear Creek | 172 | $51,278 | 2.3% | $230,800 |
| Stones Landing | 85 | N/A | 0.0% | $205,000 |
Cities Similar to Janesville
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Colfax | 2,407 | $72,788 | $434,300 | 23.6% | 13.1% |
| Pine Mountain Lake | 2,498 | $79,387 | $426,500 | 34.3% | 5.6% |
| Cayucos | 2,427 | $87,235 | $1,011,900 | 44.7% | 9.3% |
| Twain Harte | 2,372 | $88,739 | $462,700 | 48.9% | 9.7% |
| Biggs | 2,307 | $84,914 | $328,400 | 12.2% | 7.3% |
Population Overview
Janesville is a small community located in California, within Lassen County. The total population is 2,399. It ranks as the 860th most populous out of 1,570 Census-designated places in California.
Age Demographics
The median age in Janesville is 52.4 years. This is 38% higher than the state median of 37.9 years. Only 14.1% of residents are under 18, indicating fewer families with children. 12.2% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.
Economy, Income & Housing
The median household income in Janesville is $78,466. This is 21% lower than the state median of $99,122. It is also 3% lower than the national median of $80,734. The poverty rate stands at 7.5%. This is 37% lower than the state poverty rate of 12.0%. The unemployment rate is 2.4%. This is 64% lower than the state rate of 6.6%. The median home value is $326,900. Housing costs are 56% lower than the state median of $734,700. The home-value-to-income ratio is 4.2x. 77.7% of occupied housing units are owner-occupied. This homeownership rate is 39% higher than the state average of 55.9%.
Race & Ethnicity
The largest racial or ethnic group in Janesville is White (non-Hispanic), making up 78.4% of the population. Hispanic or Latino residents account for 14.5%. The White (non-Hispanic) population is significantly higher than the state average (78.4% vs 33.8%). The Hispanic or Latino population (14.5%) is well below the state average of 40.2%.
Education
10.1% of residents aged 25 and older hold a bachelor's degree or higher. This is 73% lower than the state rate of 37.1%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 83.1%.
Data Sources & Methodology
All demographic data for Janesville, California is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against California state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,570 Census-designated places in California. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Janesville, California?
Janesville, California has a population of 2,399 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Janesville, CA?
The median household income in Janesville is $78,466, which is 3% lower than the national median of $80,734.
What is the poverty rate in Janesville, CA?
The poverty rate in Janesville is 7.5%. This means approximately 181 residents live below the federal poverty line.
What is the racial makeup of Janesville, California?
Janesville's population is 78.4% White, 0.0% Black, 14.5% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Janesville, CA?
The median home value in Janesville is $326,900. The home-value-to-income ratio is 4.2x.
How educated is Janesville, California?
10.1% of adults (25+) in Janesville hold a bachelor's degree or higher, and 1.9% hold a graduate or professional degree.