St. Helena is a city in Napa County, California, home to about 5,318 people across 5.0 square miles. Its ZIP code is 94574.
Homes sold for a median of $1,017 per square foot in the three months ending August 2026, a buyer’s market.
Mostly St. Helena; also Deer Park
Each card is that ZIP code’s whole market, including any part outside St. Helena. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up St. Helena’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Sacramento International Airport (SMF)49 miles away |
|---|---|
| Closer regional airport | Charles M. Schulz Sonoma County Airport (STS)19 miles away |
| Nearest city of 250,000+ | Oakland, CA53 miles away |
| Nearest city of 1 million+ | Los Angeles, CA384 miles away |
Straight-line distances from the center of St. Helena; 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.
St. Helena had 5,430 residents in the 2020 census, down 9% since 2000.
It’s the 646th largest of 1,563 towns in California by population.
Napa County grew from 16,451 residents in 1900 to 138,019 in 2020.
Napa County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 89°F in summer, and winter lows average 40°F. About 34.1 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Saint Helena, CA weather station (about a mile away).
66,372 jobs at 4,486 businesses in Napa County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
187 doctors and other health care providers list an office in St. Helena.
Nearest hospitals
Providers with an office here
| Primary care doctors | 23 |
|---|---|
| Specialist doctors | 65 |
| Dentists | 12 |
| Nurse practitioners and physician assistants | 36 |
| Mental health providers | 34 |
| Physical and occupational therapists | 9 |
| Optometrists | 2 |
| Chiropractors | 6 |
| Pharmacies | 4 |
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 (4 nearby)
Grocery stores (2 nearby)
Libraries (1 nearby)
Museums (1 nearby)
Theaters and performance venues (1 nearby)
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.
Established in 1876.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Saint Helena Unified. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Saint Helena PrimarySt. Helena | K–2 | 193 | Public | 1.4 mi |
| Saint Helena ElementarySt. Helena | 3–5 | 229 | Public | 0.9 mi |
| Robert Louis Stevenson IntermediateSt. Helena | 6–8 | 257 | Public | 0.9 mi |
| Saint Helena HighSt. Helena | 9–12 | 416 | Public | 1.2 mi |
| Saint Helena Opportunities ProgramSt. Helena | 12 | 9 | Special Education | 0.9 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| St Helena Montessori School and FarmSaint Helena | Pre-K–12 | 198 | Roman Catholic | 0.6 mi |
| Sun & Stars Montessori SchoolSaint Helena | Pre-K–TK | 1 | Nonsectarian | 0.8 mi |
| Foothills Adventist Elementary SchoolSaint Helena | TK–8 | 19 | Seventh-day Adventist | 1.7 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Deer Park.
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.