| City: | Union Lake, Michigan |
| County: | Oakland County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 10:14:52 PM |
| Population: | No Population Data |
| Area Code: | 248 |
| Classification: | PO Box |
| Coordinates: | 42.6148, -83.4467 |
| Quick Link: |
Union Lake, Michigan's 48387 is a PO Box ZIP code serving a small postal facility in Oakland County. Despite its P classification, this isn't a traditional standalone community. The ZIP contains just 157 PO Boxes and provides service primarily through Cooley Lake Road, the single street with delivery records in the system.
The post office operates two carrier routes handling street delivery along Cooley Lake Road, which accounts for 64 delivery records with unit-based addressing. This means residents at this location receive mail through a multi-unit structure rather than traditional house-by-house delivery. The ZIP sits within the Waterford neighborhood area and is actually enclosed by the larger 48327 ZIP code, which handles most residential street delivery for the surrounding community. For practical purposes, 48387 functions as a small postal node within a larger suburban delivery network rather than as an independent service area.
With only one street in the delivery system, Cooley Lake Road defines the entire geographic footprint of this ZIP's street delivery service. The unit-based addressing suggests a consolidated delivery point rather than scattered residential addresses.
ZIP Code 48387 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: | 1,750Source: 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 48387 is located in Oakland County, Michigan, within the Detroit-Warren-Dearborn, MI Metropolitan Statistical Area (CBSA 19820) and Michigan's 11st Congressional District. This Metro area has a population of 4,296,250 people, about 0.00% of whom live in ZIP Code 48387, and is subdivided into the Warren-Troy-Farmington Hills, MI division. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Detroit-Warren-Dearborn, MISource: Census |
| CBSA Number: | 19820Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | Warren-Troy-Farmington Hills, MI (CBSA Div 47664)Source: Census |
| CBSA Population: | 4,296,250Source: Census |
| MSA: | Detroit-Ann Arbor-Flint, MI CMSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 11Source: USPS |
| Congressional Land Area: | 419.26 sq miSource: Census |
| PMSA: | Detroit, MI PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | --Source: Census |
| Place Name: | --Source: Census |
We could not locate which school district 48387 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.