| City: | Oakville, California |
| County: | Napa County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 11:02:06 PM |
| Population: | 1 [See All] |
| Area Codes: | 369 / 707 |
| Classification: | PO Box |
| Coordinates: | 38.4369, -122.4012 |
| Land Area: | 0.278 sq mi |
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Oakville's 94562 ZIP code serves a small but distinct part of Napa County's wine country, where seasonal patterns define the postal landscape. Of the four total housing units recorded, three are classified as seasonal or vacation properties. That's a 75% seasonal vacancy rate, one of the highest in California.
The post office maintains 127 PO Boxes for what the 2020 Census counted as a single permanent resident. This isn't a data error. It's wine country reality. Property owners who spend most of the year elsewhere still need a reliable address for tax documents, business correspondence, and vineyard-related mail. PO Boxes stay active year-round while their owners come and go.
Street delivery exists but barely. Two streets appear in postal records: St Helena Highway (the main corridor through Napa Valley) and Acacia Drive. The highway route handles five delivery points with one unit designation (marked as "REAR" in postal records), while Acacia Drive has a single address. A named building appears in postal records simply as "POSTMASTER." The 77 businesses recorded here don't translate to a traditional town center. Many are vineyard operations, tasting rooms, or agricultural enterprises scattered along rural routes.
The median age of 17.5 years initially seems puzzling for a vacation community, but with a total population of one person in the census count, that single data point doesn't reveal much. What's clear is that this ZIP exists primarily for property and business mail, not residential delivery. The area covers just 0.07 square miles of land with no water area, making it one of California's smallest ZIP code footprints. Rural carrier routes (three of them) and highway contract routes (another three) handle what little street delivery occurs, while the PO Box operation serves the much larger universe of property owners and business interests.
The street network is minimal, dominated by St Helena Highway, the main artery through Napa Valley wine country. With just two streets in postal records, this reflects a community organized around agricultural land and seasonal properties rather than traditional residential development.
ZIP Code 94562 has 1 residents and 0 households. The median age is 17.5 years, significantly younger than the state (37.5) and significantly younger than the nation (38.8). The gender split is 0.0% male and 100.0% female, which is much lower than the state male share (49.4%), making this a female-majority area. Largest groups are Hispanic or Latino (100.0%) and White (0.0%, much lower than the state average of 41.2% and well below the national average of 61.6%); Hispanic or Latino residents make up 100.0%, which is much higher than the national average (18.7%).
Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship
| 2020 Population: | 1Source: Census DHC |
| 2024 ACS Population Estimate: | 0Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 3.6 people per sq mile |
| Average Income: | $0Source: Census ACS |
| Households: | 0Source: Census DHC |
| Average House Value: | $0Source: Census ACS |
| Persons Per Household: | 0.00Source: Census DHC |
| Average Family Size: | 0.00Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Decennial Census | 0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 1 | -- | -- | -- |
Median Age: 17.5
Male Median Age: 0
Female Median Age: 17.5
| Group | < 5 | 5-9 | 10-14 | 15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | 50-54 | 55-59 | 60-64 | 65-69 | 70-74 | 75-79 | 80-84 | 85+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Female | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| White: | 0 | 0% |
| Black: | 0 | 0% |
| Hispanic:* | 1 | 100.00% |
| Asian: | 0 | 0% |
| American Indian: | 0 | 0% |
| Hawaiian: | 0 | 0% |
| Other: | 0 | 0% |
| Total: | 1 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 0 | 0% | 0.0 years |
| Females: | 1 | 100.00% | 17.5 years |
| Total: | 1 | 100% | 17.5 years |
| Native, born in the United States: | 0 | 0% |
| Native, born in PR, Island Areas, or abroad: | 0 | 0% |
| Foreign born, naturalized U.S. citizen: | 0 | 0% |
| Foreign born, not a U.S. citizen: | 0 | 0% |
| Total Population: | 0 | 100% |
| Total Native Population: | 0 | 0% |
| Total Foreign-born Population: | 0 | 0% |
ZIP Code 94562 supports both business and residential activity. According to the Business Census (2024), there are 22 business establishments, employing about 693 people with an annual payroll of $61,246,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 6,883Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 22Source: CBP |
| 1st Quarter Payroll: | $15,657,000Source: CBP |
| Annual Payroll: | $61,246,000Source: CBP |
| # of Employees: | 693Source: CBP |
ZIP Code 94562 is located in Napa County, California, within the Napa, CA Metropolitan Statistical Area (CBSA 34900) and California's 5th Congressional District. This Metro area has a population of 136,070 people, about 0.00% of whom live in ZIP Code 94562. It covers 0.278 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Napa, CASource: Census |
| CBSA Number: | 34900Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 136,070Source: Census |
| MSA: | San Francisco-Oakland-San Jose, CA CMSASource: Census |
| Land Area: | 0.278 sq miSource: Census |
| Water Area: | --Source: Census |
| Congressional District: | 05Source: USPS |
| Congressional Land Area: | 1730.82 sq miSource: Census |
| PMSA: | Vallejo-Fairfield-Napa, CA PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0653196Source: Census |
| Place Name: | Oakville CDP; CaliforniaSource: Census |
We could not locate which school district 94562 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on February 1, 2026.