| City: | Oakland, California |
| Names to Avoid: | Kaiser Services |
| County: | Alameda County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 11:04:45 PM |
| Population: | No Population Data |
| Area Codes: | 341 / 415 / 510 / 628 / 925 |
| Classification: | Unique [Company/Government] |
| Coordinates: | 37.8046, -122.2699 |
| Quick Link: |
Kaiser Services operates under dedicated ZIP code 94666 in Downtown Oakland, Alameda County. Kaiser Permanente, founded in 1945, is one of the nation's largest nonprofit healthcare organizations, and Oakland has served as its corporate home since inception. The company's presence along Lakeside Drive adjacent to Lake Merritt includes the historic Kaiser Center, a 28-story office building completed in 1960 that was Oakland's tallest building for many years.
This compact 0.02-square-mile ZIP occupies Downtown Oakland's core, within the broader Downtown Oakland area. Postal records show two delivery codes and one building (Kaiser Services on Lakeside) serving this designation, which has been in place since before 2004. Kaiser Permanente maintains multiple Oakland properties including One Kaiser Plaza, and this dedicated ZIP streamlines correspondence for its Northern California administrative operations. No residential population exists here, consistent with commercial office use. Oakland is the valid mailing city.
Buildings registered in the USPS ZIP+4 database with designated codes for direct mail delivery.
ZIP Code 94666 is assigned to a single organization or institution. Detailed business demographics are not published for unique ZIP Codes.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 0Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 0Source: CBP |
| 1st Quarter Payroll: | $0Source: CBP |
| Annual Payroll: | $0Source: CBP |
| # of Employees: | 0Source: CBP |
ZIP Code 94666 is located in Alameda County, California, within the San Francisco-Oakland-Fremont, CA Metropolitan Statistical Area (CBSA 41860) and California's 12nd Congressional District. This Metro area has a population of 4,653,593 people, about 0.00% of whom live in ZIP Code 94666, and is subdivided into the Oakland-Fremont-Berkeley, CA division. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | San Francisco-Oakland-Fremont, CASource: Census |
| CBSA Number: | 41860Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | Oakland-Fremont-Berkeley, CA (CBSA Div 36084)Source: Census |
| CBSA Population: | 4,653,593Source: Census |
| MSA: | San Francisco-Oakland-San Jose, CA CMSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 12Source: USPS |
| Congressional Land Area: | 38.97 sq miSource: Census |
| PMSA: | Oakland, CA PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0653000Source: Census |
| Place Name: | Oakland city; CaliforniaSource: Census |
We could not locate which school district 94666 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.