| City: | Portage, Michigan |
| County: | Kalamazoo County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 8:13:09 PM |
| Population: | No Population Data |
| Area Code: | 269 |
| Classification: | PO Box |
| Coordinates: | 42.2011, -85.5803 |
| Quick Link: |
ZIP code 49081 serves a commercial area in Portage, Michigan, focused on W Milham Ave. This isn't a residential community. Instead, it provides postal services for businesses and organizations along a single street corridor in Kalamazoo County.
The post office maintains 385 PO Boxes and handles mail for 339 business delivery points. All street delivery occurs at W Milham Ave, where 105 ZIP+4 records show unit-based addressing typical of office parks or commercial complexes. There's no residential population within this ZIP's boundaries.
Portage residents receive mail through other ZIP codes. The city has multiple standard delivery ZIPs, and 49081 functions specifically as a PO Box facility for this commercial corridor. Street delivery is available at business addresses on W Milham Ave, while individuals and businesses can rent PO Boxes for mail receipt.
Single street (W Milham Ave) serves commercial tenants with unit-based delivery.
ZIP Code 49081 supports both business and residential activity. According to the Business Census (2024), there are 13 business establishments, employing about 338 people with an annual payroll of $7,129,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 1,272Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 13Source: CBP |
| 1st Quarter Payroll: | $1,912,000Source: CBP |
| Annual Payroll: | $7,129,000Source: CBP |
| # of Employees: | 338Source: CBP |
ZIP Code 49081 is located in Kalamazoo County, Michigan, within the Kalamazoo-Portage, MI Metropolitan Statistical Area (CBSA 28020) and Michigan's 4th Congressional District. This Metro area has a population of 261,437 people, about 0.00% of whom live in ZIP Code 49081. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Kalamazoo-Portage, MISource: Census |
| CBSA Number: | 28020Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 261,437Source: Census |
| MSA: | Kalamazoo-Battle Creek, MI MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 04Source: USPS |
| Congressional Land Area: | 8457.8 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 2665560Source: Census |
| Place Name: | Portage city; MichiganSource: Census |
We could not locate which school district 49081 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.