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Where am ILOCATED

Sonoma County, California

Sonoma County, California, has 486,444 residents (July 2025 estimate). Its county seat is Santa Rosa. It uses Pacific Time and covers 1,575 sq mi (4,080 km²) of land.

Los AngelesSan DiegoSan Jose
Sonoma County in California
Napa CountySanta RosaPetalumaRohnert ParkWindsorHealdsburg
Sonoma County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
486,444
Land area
1,575 sq mi (4,080 km²)
County seat or government
Santa Rosa
Time zone
Pacific TimeUTC-08:00 in January; UTC-07:00 in July
Median household income
$104,674 ± $2,030
Median home value
$815,500 ± $6,412
Median rent, with utilities
$2,158 ± $30
Homes lived in by their owners
62.6% ± 0.8 points
County type
County
Metro or micro area
Santa Rosa-Petaluma, CA metro areaCentral county
Water area
192 sq mi (497 km²)
State
California
County code (FIPS)
06097
Coordinates (central point)
38.525182, -122.926110
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Sonoma County

Time zoneLocal time and UTC offsetNext clock change
Pacific TimeAmerica/Los_AngelesUTC-08:00 in January; UTC-07:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 9455863,657 people
  2. 9492846,829 people
  3. 9540345,806 people
  4. 9540742,036 people
  5. 9495437,574 people
  6. 9540437,011 people
  7. 9540136,861 people
  8. 9547635,196 people
  9. 9495233,785 people
  10. 9547228,747 people
  11. 9549227,429 people
  12. 9540925,616 people
All 41
  1. 9540522,744 people
  2. 9544816,077 people
  3. 9542510,978 people
  4. 949319,487 people
  5. 945747,457 people
  6. 945156,946 people
  7. 954365,821 people
  8. 954464,607 people
  9. 954423,449 people
  10. 949513,294 people
  11. 954521,762 people
  12. 954411,648 people
  13. 954211,570 people
  14. 949231,483 people
  15. 954971,275 people
  16. 954651,203 people
  17. 954621,058 people
  18. 95444625 people
  19. 95439486 people
  20. 95471394 people
  21. 95412331 people
  22. 95450224 people
  23. 95419152 people
  24. 9543143 people
  25. 9548617 people
  26. 954808 people
  27. 949226 people
  28. 949720 people
  29. 954300 people

41 ZIP Code areas overlap Sonoma County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

School districts in Sonoma County, largest first

  1. Santa Rosa High School District211,086 people
  2. Petaluma Joint Union High School District73,567 people
  3. Santa Rosa Elementary School District70,817 people
  4. Cotati-Rohnert Park Unified School District56,619 people
  5. West Sonoma County Union High School District46,122 people
  6. Rincon Valley Union Elementary School District39,014 people
  7. Sonoma Valley Unified School District38,360 people
  8. Petaluma City Elementary School District30,374 people
  9. Windsor Unified School District27,382 people
  10. Old Adobe Union Elementary School District26,341 people
  11. Bellevue Union School District26,275 people
  12. Wright Elementary School District18,040 people
All 45
  1. Piner-Olivet Union Elementary School District15,829 people
  2. Healdsburg Unified School District14,156 people
  3. Mark West Union Elementary School District13,683 people
  4. Roseland School District12,846 people
  5. Sebastopol Union Elementary School District11,511 people
  6. Cloverdale Unified School District10,963 people
  7. Bennett Valley Union Elementary School District10,487 people
  8. Point Arena Joint Union High School District7,318 people
  9. Forestville Union Elementary School District7,204 people
  10. Calistoga Joint Unified School District6,943 people
  11. Waugh Elementary School District6,345 people
  12. Gravenstein Union Elementary School District5,431 people
  13. Twin Hills Union Elementary School District5,414 people
  14. Shoreline Unified School District5,354 people
  15. Oak Grove Union Elementary School District4,547 people
  16. Guerneville Elementary School District4,535 people
  17. Harmony Union School District4,388 people
  18. Kenwood Elementary School District4,095 people
  19. Wilmar Union Elementary School District3,562 people
  20. Cinnabar Elementary School District2,491 people
  21. Liberty Elementary School District (Sonoma County)1,788 people
  22. Healdsburg Unified School District (7-12)1,670 people
  23. Horicon Elementary School District1,618 people
  24. Geyserville Unified School District1,472 people
  25. Two Rock Union Elementary School District1,444 people
  26. Monte Rio Union Elementary School District1,276 people
  27. Montgomery Elementary School District1,146 people
  28. Alexander Valley Union School District852 people
  29. West Side Union Elementary School District818 people
  30. Dunham Elementary School District682 people
  31. Fort Ross Elementary School District670 people
  32. Laguna Joint Elementary School District540 people
  33. Kashia Elementary School District8 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Tribal areas in Sonoma County, largest first

  1. Stewarts Point Rancheria and Off-Reservation Trust Land8 people
  2. Dry Creek Rancheria and Off-Reservation Trust Land0 people

American Indian, Alaska Native and Native Hawaiian areas as the Census Bureau maps them, with at least 2% of their area here, water included. These lines don’t decide membership, jurisdiction or land status.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Santa Rosa, California (city)177,090 people
  2. Petaluma, California (city)59,247 people
  3. Rohnert Park, California (city)44,575 people
  4. Windsor, California (town)26,081 people
  5. Healdsburg, California (city)11,243 people
  6. Sonoma, California (city)10,670 people
  7. Cloverdale, California (city)8,886 people
  8. Larkfield-Wikiup, California (CDP)8,765 people
  9. Cotati, California (city)7,489 people
  10. Sebastopol, California (city)7,445 people
  11. Boyes Hot Springs, California (CDP)7,247 people
  12. Guerneville, California (CDP)4,100 people
All 38
  1. Forestville, California (CDP)3,717 people
  2. El Verano, California (CDP)3,443 people
  3. Fetters Hot Springs-Agua Caliente, California (CDP)3,347 people
  4. Sonoma State University, California (CDP)2,210 people
  5. Penngrove, California (CDP)2,119 people
  6. Graton, California (CDP)1,806 people
  7. Temelec, California (CDP)1,628 people
  8. Eldridge, California (CDP)1,379 people
  9. Sea Ranch, California (CDP)1,287 people
  10. Occidental, California (CDP)1,225 people
  11. Bodega Bay, California (CDP)1,139 people
  12. Glen Ellen, California (CDP)1,078 people
  13. Kenwood, California (CDP)1,028 people
  14. Monte Rio, California (CDP)876 people
  15. Petaluma Center, California (CDP)763 people
  16. Geyserville, California (CDP)672 people
  17. Cazadero, California (CDP)483 people
  18. Fulton, California (CDP)453 people

See all 38 cities, towns and communities in Sonoma County, largest first

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Napa County, California32 mi east
  2. Marin County, California34 mi south
  3. Lake County, California41 mi north
  4. Solano County, California56 mi east
  5. Contra Costa County, California67 mi southeast
  6. Mendocino County, California69 mi northwest

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.