| City: | Nason, Illinois |
| County: | Jefferson County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 8:22:07 AM |
| Population: | No Population Data |
| Area Codes: | 618 / 730 |
| Classification: | PO Box |
| Coordinates: | 38.1484, -89.0133 |
| Quick Link: |
This facility operates as a true PO Box-only zone without carrier routes. While classified as a PO Box ZIP, residents in the surrounding area may receive street delivery through neighboring ZIP codes. The post office maintains its role as a designated postal facility for the Nason community, though the service area shows minimal recorded population in postal geography databases.
No street delivery records exist for this ZIP code.
ZIP Code 62866 is designated for PO Box delivery only; business establishment and employment data are not available.
| # 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 62866 is located in Jefferson County, Illinois, within the Mount Vernon, IL Metropolitan Statistical Area (CBSA 34500). This Micro area has a population of 47,284 people, about 0.00% of whom live in ZIP Code 62866. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Mount Vernon, ILSource: Census |
| CBSA Number: | 34500Source: Census |
| CBSA Type: | MicroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 47,284Source: Census |
| MSA: | Source: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | No DistrictsSource: USPS |
| Congressional Land Area: | sq miSource: Census |
| PMSA: | Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 1751726Source: Census |
| Place Name: | Nason city; IllinoisSource: Census |
We could not locate which school district 62866 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.