ZIP Code 94931, California
ZIP Code 94931 profile, demographic data, and geographic information.
ZCTA5 94931 is a 5-digit ZIP Code area located in Sonoma County, California. As of official census estimates, it has a reported population of 9,487. The land area covers 7.74 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 9,487 | ±588 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | 39.2 yrs | ±3.2 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 4,072 | ±388 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 4,134 | ±423 |
| Occupied Housing Units | 4,072 | ±388 |
| Vacant Housing Units | 62 | ±90 |
| Median Home Value | $820,000 | ±$38,260 |
| Median Gross Rent | $1,913 | ±$371 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $101,994 | ±$21,080 |
| Per Capita Income | $55,275 | ±$5,122 |
| Poverty Rate | 8.6% | ±2.5% |
| Population Below Poverty Level | 809 | ±241 |
| Unemployment Rate | 3.4% | ±1.8% |
| Civilian Labor Force, Employed | 5,351 | ±531 |
| Broadband Internet Rate | 93% | ±12.2% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 485,375 (2024)
ID: 161117
|
County | Official County Government |
Contact: ADMINISTRATOR
575 ADMINISTRATION DR, SANTA ROSA CA 95403-2823
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | KG-06 | Santa Rosa, CA | |
| Regular School Nearby | 06-08 | Sonoma, CA | |
| Regular School Nearby | KG-06 | Santa Rosa, CA | |
| Regular School Nearby | 06-08 | Sonoma, CA | |
| Regular School Nearby | 09-12 | Sebastopol, CA | |
| Regular School Nearby | KG-05 | Sebastopol, CA | |
| Regular School Nearby | KG-06 | Santa Rosa, CA | |
| Regular School Nearby | KG-06 | Santa Rosa, CA | |
| Alternative School Nearby | 06-12 | Windsor, CA | |
| Regular School Nearby | KG-06 | Santa Rosa, CA |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 10 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
Sonoma State University
|
College | 2.4 mi away | 1801 E Cotati Ave, Rohnert Park, CA, 94928-3609 |
7076642880
|
|
ROHNERT PARK-COTATI REGIONAL LIBRARY
|
Library | 1.8 mi away | 6250 LYNNE CONDE WAY, ROHNERT PARK, CA, 94928 |
(707) 584-9121
|
|
Meridian University
|
College | 7.7 mi away | 47 Sixth Street, Petaluma, CA, 94952-3092 |
7077651836
|
|
SONOMA COUNTY LIBRARY BIBLIOBUS
|
Library | 1.9 mi away | 6135 STATE FARM DRIVE, ROHNERT PARK, CA, 94928 |
(707) 308-3020
|
|
Santa Rosa Junior College
|
College | 9.1 mi away | 1501 Mendocino Avenue, Santa Rosa, CA, 95401-4395 |
7075274011
|
|
ROSELAND REGIONAL LIBRARY
|
Library | 7.3 mi away | 470 SEBASTOPOL ROAD, SANTA ROSA, CA, 95407 |
(707) 755-2029
|
|
Lytles Redwood Empire Beauty College
|
College Vocational | 12.9 mi away | 186 Wikiup Dr, Santa Rosa, CA, 95403 |
7075458490
|
|
PETALUMA REGIONAL LIBRARY
|
Library | 7.4 mi away | 100 FAIRGROUNDS DRIVE, PETALUMA, CA, 94952 |
(707) 763-9801
|
|
Pacific Union College
|
College | 22.6 mi away | One Angwin Ave, Angwin, CA, 94508-9707 |
7079656313
|
|
SEBASTOPOL REGIONAL LIBRARY`
|
Library | 7.9 mi away | 7140 BODEGA AVENUE, SEBASTOPOL, CA, 95472 |
(707) 823-7691
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at PETALUMA AP, CA US, located 7.5 miles from ZCTA5 94931. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 57.6° | 39.0° | 48.3° | 4.77" | 0.0" |
| February | 61.3° | 40.4° | 50.8° | 5.23" | 0.0" |
| March | 64.5° | 41.9° | 53.2° | 3.32" | 0.0" |
| April | 67.8° | 43.8° | 55.8° | 1.68" | 0.0" |
| May | 71.9° | 47.4° | 59.6° | 0.93" | 0.0" |
| June | 78.1° | 50.4° | 64.3° | 0.28" | 0.0" |
| July | 80.8° | 52.4° | 66.6° | 0.01" | 0.0" |
| August | 81.2° | 52.8° | 67.0° | 0.05" | 0.0" |
| September | 81.6° | 51.4° | 66.5° | 0.09" | 0.0" |
| October | 76.4° | 47.6° | 62.0° | 1.27" | 0.0" |
| November | 65.5° | 42.3° | 53.9° | 2.74" | 0.0" |
| December | 57.9° | 38.4° | 48.1° | 5.19" | 0.0" |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| Cotati city | City | 0.4 mi | — |
| Rohnert Park city | City | 1.8 mi | — |
| Sonoma State University CDP | CDP | 2.6 mi | — |
| Penngrove CDP | CDP | 3.0 mi | — |
| Bloomfield CDP | CDP | 6.4 mi | — |
| Petaluma Center CDP | CDP | 6.5 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 94931. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.