| City: | Tracy, California |
| County: | San Joaquin County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 11:12:09 PM |
| Population: | No Population Data |
| Area Codes: | 209 / 350 |
| Classification: | PO Box |
| Coordinates: | 37.7398, -121.4243 |
| Quick Link: |
This isn't a standalone community. Tracy's main residential and commercial areas receive street delivery through the primary ZIP code 95376, which encompasses this facility. The 347 businesses using this ZIP reflect Tracy's commercial activity, with many companies choosing PO Box addresses for mail security and consistency. The single street record for W 9th ST with 74 delivery points likely represents the post office building itself and immediately surrounding businesses on that block.
Tracy sits in San Joaquin County in California's Central Valley. The city has grown substantially as a commuter hub for the San Francisco Bay Area, and this PO Box facility helps handle the resulting mail volume. The high ratio of PO Boxes to actual residential delivery points shows this ZIP functions as a service extension rather than a geographic district.
The single street record represents the post office facility's physical address rather than a delivery route. W 9th ST is where the PO Box facility is located within Tracy's downtown area.
ZIP Code 95378 supports both business and residential activity. According to the Business Census (2024), there are 10 business establishments, employing about 233 people with an annual payroll of $27,668,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 11,329Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 10Source: CBP |
| 1st Quarter Payroll: | $7,136,000Source: CBP |
| Annual Payroll: | $27,668,000Source: CBP |
| # of Employees: | 233Source: CBP |
ZIP Code 95378 is located in San Joaquin County, California, within the Stockton-Lodi, CA Metropolitan Statistical Area (CBSA 44700) and California's 9th Congressional District. This Metro area has a population of 787,416 people, about 0.00% of whom live in ZIP Code 95378. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Stockton-Lodi, CASource: Census |
| CBSA Number: | 44700Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 787,416Source: Census |
| MSA: | Stockton-Lodi, CA MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 09Source: USPS |
| Congressional Land Area: | 1245.28 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0680238Source: Census |
| Place Name: | Tracy city; CaliforniaSource: Census |
We could not locate which school district 95378 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 January 1, 2026.