Penngrove is a community in Sonoma County, California, home to about 2,119 people across 4.0 square miles. Its ZIP code is 94951.
Homes sold for a median of $543 per square foot in the three months ending August 2026, a seller’s market.
Each card is that ZIP code’s whole market, including any part outside Penngrove. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Penngrove’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Oakland San Francisco Bay Airport (OAK)47 miles away |
|---|---|
| Closer regional airport | Charles M. Schulz Sonoma County Airport (STS)16 miles away |
| Nearest city of 250,000+ | Oakland, CA44 miles away |
| Nearest city of 1 million+ | Los Angeles, CA379 miles away |
Straight-line distances from the center of Penngrove; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Penngrove had 2,637 residents in the 2020 census, up 5% since 2010.
It’s the 890th largest of 1,563 towns in California by population.
Sonoma County grew from 38,480 residents in 1900 to 488,863 in 2020.
Sonoma County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 82°F in summer, and winter lows average 38°F. About 25.6 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Petaluma Ap, CA weather station (5 miles away).
177,367 jobs at 14,572 businesses in Sonoma County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
8 doctors and other health care providers list an office in Penngrove.
Nearest hospitals
Providers with an office here
| Mental health providers | 6 |
|---|---|
| Physical and occupational therapists | 2 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (1 nearby)
Grocery stores
Pharmacies
Libraries
Museums
Theaters and performance venues
Counts are within about 1.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Petaluma City Elementary. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Penngrove ElementaryPenngrove | K–6 | 472 | Charter | 1.5 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.