Sea Ranch, California Demographics & Population 2026
During the 2020–2024 ACS period, Sea Ranch, California had a total population of 1,287, the 1000th largest community in California, with a median household income of $139,375, which is 41% higher than the state average. The poverty rate is 3.0%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 41% above the state average — one of the wealthiest communities in California.
- An exceptionally low poverty rate of 3.0% — among the lowest in California.
- 74.3% of adults hold a bachelor's degree or higher — top 10% in California.
- Housing affordability is a challenge — homes cost 9.8x the median household income.
Sea Ranch Quick Facts
How Sea Ranch 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 | 1,200 | 1,287 | +7.2% |
| Median household income | $121,731 | $139,375 | +14.5% |
| Median home value | $1,198,200 | $1,371,600 | +14.5% |
How Sea Ranch 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+)
Sea Ranch Rankings in California
Explore California Rankings
Other Cities in Sonoma County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Santa Rosa | 177,090 | $99,060 | 9.7% | $713,900 |
| Petaluma | 59,247 | $115,430 | 6.5% | $878,600 |
| Rohnert Park | 44,575 | $99,273 | 10.5% | $666,300 |
| Windsor | 26,081 | $133,979 | 5.9% | $801,100 |
| Healdsburg | 11,243 | $103,554 | 11.6% | $950,100 |
| Sonoma | 10,670 | $98,527 | 10.4% | $970,500 |
| Cloverdale | 8,886 | $117,177 | 4.1% | $619,400 |
| Larkfield-Wikiup | 8,765 | $97,071 | 6.5% | $704,700 |
| Cotati | 7,489 | $110,750 | 8.2% | $746,800 |
| Sebastopol | 7,445 | $87,684 | 8.7% | $845,700 |
Cities Similar to Sea Ranch
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Lake Riverside | 1,262 | $128,636 | $430,800 | 35.5% | 1.3% |
| Somis | 1,229 | $145,163 | $1,089,800 | 41.9% | 3.7% |
| Green Valley (Solano County) | 1,364 | $142,000 | $1,200,200 | 54.9% | 9.2% |
| Hasley Canyon | 1,216 | $144,712 | $1,158,200 | 45.8% | 10.8% |
| Santa Margarita | 1,149 | N/A | $684,000 | 34.4% | 3.0% |
Population Overview
Sea Ranch is a small community located in California, within Sonoma County. The total population is 1,287. It ranks as the 1000th most populous out of 1,570 Census-designated places in California.
Age Demographics
The median age in Sea Ranch is 70.2 years. This is 85% higher than the state median of 37.9 years. 32.4% 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 Sea Ranch is $139,375. This is 41% higher than the state median of $99,122. It is also 73% higher than the national median of $80,734. The poverty rate stands at 3.0%. This is 75% lower than the state poverty rate of 12.0%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 3.5%. This is 47% lower than the state rate of 6.6%. The median home value is $1,371,600. Housing costs are 87% higher than the state median of $734,700. The home-value-to-income ratio of 9.8x suggests that housing affordability is a significant concern for many residents. 95.3% of occupied housing units are owner-occupied. This homeownership rate is 71% higher than the state average of 55.9%.
Race & Ethnicity
The largest racial or ethnic group in Sea Ranch is White (non-Hispanic), making up 82.2% of the population. Asian residents account for 4.7%. The White (non-Hispanic) population is significantly higher than the state average (82.2% vs 33.8%). The Hispanic or Latino population (2.6%) is well below the state average of 40.2%. The Asian population (4.7%) is well below the state average of 15.3%.
Education
74.3% of residents aged 25 and older hold a bachelor's degree or higher. This places Sea Ranch in the top 10% of all cities in the state for educational attainment. This is 100% higher 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 98.7%. Notably, 42.9% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Sea Ranch, 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 Sea Ranch, California?
Sea Ranch, California has a population of 1,287 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Sea Ranch, CA?
The median household income in Sea Ranch is $139,375, which is 73% higher than the national median of $80,734.
What is the poverty rate in Sea Ranch, CA?
The poverty rate in Sea Ranch is 3.0%. This means approximately 39 residents live below the federal poverty line.
What is the racial makeup of Sea Ranch, California?
Sea Ranch's population is 82.2% White, 0.0% Black, 2.6% Hispanic/Latino, and 4.7% Asian.
What is the median home value in Sea Ranch, CA?
The median home value in Sea Ranch is $1,371,600. The home-value-to-income ratio is 9.8x.
How educated is Sea Ranch, California?
74.3% of adults (25+) in Sea Ranch hold a bachelor's degree or higher, and 42.9% hold a graduate or professional degree.