| City: | Oak Park, Illinois |
| County: | Cook County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:11:26 PM |
| Population: | No Population Data |
| Area Codes: | 464 / 708 / 773 / 872 |
| Classification: | PO Box |
| Coordinates: | 41.8851, -87.7847 |
| Quick Link: |
Oak Park, Illinois uses ZIP code 60303 exclusively for PO Box services and delivery to a single building on Lake Street. This isn't a geographic area with residents. It's a postal facility ZIP that serves the broader Oak Park community.
The post office at this location maintains 438 PO Boxes and provides delivery to 155 business addresses. All street delivery records (121 total) are for Lake Street units, suggesting a multi-unit commercial or residential building. Oak Park residents receive street delivery through neighboring ZIPs 60301, 60302, and 60304.
This classification reflects USPS administrative organization rather than community boundaries. The ZIP exists as a service point within Oak Park, which is located in Cook County in the Chicago metropolitan area. Five business establishments operate here, employing 18 workers.
Only one street appears in postal records: Lake Street, with all 121 records showing UNIT designators for a multi-unit building.
ZIP Code 60303 supports both business and residential activity. According to the Business Census (2024), there are 7 business establishments, employing about 20 people with an annual payroll of $1,645,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 675Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 7Source: CBP |
| 1st Quarter Payroll: | $357,000Source: CBP |
| Annual Payroll: | $1,645,000Source: CBP |
| # of Employees: | 20Source: CBP |
ZIP Code 60303 is located in Cook County, Illinois, within the Chicago-Naperville-Elgin, IL-IN Metropolitan Statistical Area (CBSA 16980) and Illinois's 7th Congressional District. This Metro area has a population of 9,359,555 people, about 0.00% of whom live in ZIP Code 60303, and is subdivided into the Chicago-Naperville-Schaumburg, IL division. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Chicago-Naperville-Elgin, IL-INSource: Census |
| CBSA Number: | 16980Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | Chicago-Naperville-Schaumburg, IL (CBSA Div 16984)Source: Census |
| CBSA Population: | 9,359,555Source: Census |
| MSA: | Chicago-Gary-Kenosha, IL-IN-WI CMSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 07Source: USPS |
| Congressional Land Area: | 62.52 sq miSource: Census |
| PMSA: | Chicago, IL PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 1754885Source: Census |
| Place Name: | Oak Park village; IllinoisSource: Census |
We could not locate which school district 60303 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.