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Robert Mondavi winery
California›Napa County

OakvilleCA

A town in California. The National Register of Historic Places lists 2 places here.

Photo of Oakville

Oakville, CA · Photo: Greg Dunham from Kirkland, WA, USA · CC BY 2.0 · Source ↗

Land area
1 sq mi

Is Oakville a good place to live?

Oakville’s January low is 38°F, where California’s towns sit at 40°F and U.S. towns at 22°F. Its National Register listings include Far Niente Winery and Oakville Grocery. We don’t grade Oakville yet; the figures below are still real.

What makes Oakville stand out

Where Oakville beats most towns.

Oakville Grocery
Oakville Grocery · National Register of Historic Places
Oakville’s story

169 years in pictures

The archive holds 6 old photos and papers going back to 1999 and 3 maps from 1942 on.

2 places on the National Register of Historic Places.

  • 1857Oakville is settled
Explore the history →
Nearby attractions

Lake Berryessa and 62 more within 40 miles

Museums, parks, gardens and other places to visit around Oakville. Close and well known come first.

All 212 attractions →
Sources: National Park Service · ski areas © OpenSkiMap / OpenStreetMap contributors · Wikidata · Wikipedia readership · photos via Wikimedia Commons
Photo credits

Lake Berryessa: Unknown, Public domain · Muir Woods National Monument: Unknown, CC BY-SA 3.0 · Six Flags Discovery Kingdom: Tinned Elk, CC BY-SA 3.0 · Mount Tamalpais: Originally uploaded by Nelso (Transferred by DimiTalen), CC BY-SA 3.0 · Point Reyes National Seashore: King of Hearts, CC BY-SA 4.0 · Charles M. Schulz Museum and Research Center: BrokenSphere, CC BY-SA 3.0

Getting set up

Moving to Oakville: who provides what

Oakville is unincorporated, so Napa County and regional agencies provide most services.

PowerPG&E37.5¢/kWh · EIA 2025HIFLD · EIA
WaterCity of Napa water systemNo health-based violations in 5 years · EPAEPA
InternetProviders and speedsData pending · D4
Trash & county servicesNapa CountyNapa County provides services here
SchoolsSt. Helena Unified School DistrictWhich school depends on your addressNCES
Register to voteOnlineIn California you can register online until 15 days before Election Day, in person up to and including Election Day, or by mail (postmarked 15 days before).vote.gov
Who runs elections hereNapa County Election DivisionNapa County; contacts on the Handbook page.FVAP, Sep 2025
ZIP codes94558, 9456294558 98% · 94562 2%Census 2020

EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Nov 18, 2024.

The data

Ordered by what stands out in Oakville.

Natural hazards

Natural hazards: very high risk in Oakville, mostly drought

Storm and flood damage is expected to run higher than in 94% of U.S. communities. Expected losses in Oakville break down as 46% from drought and 27% from inland flooding. Federal disaster aid has reached households in Oakville once, in 2005.

94risk score of 100
FEMA risk score
94Very high riskLowerHigher
DroughtInland floodingEarthquakes
1
federal disasters paid out here

FEMA disaster declarations and aid · FEMA National Risk Index · OpenFEMA

Climate

In Oakville, expect mild winters and hot summers

July afternoons reach 88°, January nights drop to 38° and snow is almost unheard of.

88°summer high

Typical low → high °F

Winter39–59°
Spring45–72°
Summer54–87°
Fall47–77°
Dec 4
typical first frost
Feb 3
typical last frost
+1.5°
vs. the 20th-century average
88°
typical summer high

NOAA U.S. Climate Normals, 1991–2020

Health

How healthy Oakville is

Among adults in Oakville, 11% smoke cigarettes. Across all 32 CDC measures, Oakville beats California on 9 and trails on 4. In Oakville, nearly three quarters of adults had a checkup this year, and 29% have obesity.

OakvilleTypical California townTypical U.S. town
Sleep under 7 hours (CDC PLACES)31%35%36%
Yearly checkup (CDC PLACES)74%72%79%
Obesity (CDC PLACES)29%29%35%
Smoke cigarettes (CDC PLACES)11%11%14%
32 measures vs. California
9 better19 too close to call4 worse
What stands outOakvilleCA
Fewer older adults who have lost all their teeth8.1%10.6%
Fewer adults facing food insecurity14%17.9%
More adults who have had cancer9.1%6.4%
Adventist Health St. Helena
8.2 mi away · emergency room
None
primary care, dental or mental-health shortage

CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA

0
homes sold in September

Zillow Home Value Index · Redfin Data Center

Outdoors

0% of Oakville is conserved land

1.0 miles of trail. Oakville’s trail density is 0.7 miles per square mile.

0%conserved
0%
conserved · 0 of 866 acres
1.0 mi
of trails · 0.7 per sq mi

Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US

Keep exploring

Everything we know about Oakville

15pages on Oakville
After high school

Colleges nearby

2 within 15 miles of the center of Oakville

About Oakville

Census-designated place in California, United States

Oakville is a census-designated place (CDP) in the Napa Valley of Napa County, northern California, United States. The population was 49 at the 2020 census. Oakville's ZIP Code is 94562, and it is located in area code 707. The local economy is based on Napa Valley wine production, and Oakville was formally declared a distinct appellation within the Napa Valley AVA in 1993. There are currently 24 wineries and over 5,000 acres (20 km2) of vineyard located within the boundary of the Oakville AVA, among them are the Robert Mondavi Winery, the Opus One Winery, and wineries of Heitz Wine Cellars and Screaming Eagle.

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

Area
1.4 sq mi
Elevation
154 ft
ZIP code
94562
Area code
707

Questions about Oakville

Short answers, built from the data on this page.

Is Oakville, CA a good place to live?

We don’t grade Oakville yet; the figures below are still real. A town in California. The National Register of Historic Places lists 2 places here.