| City: | Rockford, Illinois |
| County: | Winnebago County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 8:09:44 AM |
| Population: | No Population Data |
| Area Codes: | 779 / 815 |
| Classification: | PO Box |
| Coordinates: | 42.2712, -89.0939 |
| Quick Link: |
ZIP code 61110 serves downtown Rockford, Illinois, providing PO Box services within the city's larger postal network. This isn't a standalone community. It's a point-location ZIP embedded within the 61101 ZIP code boundary, covering the River District and Downtown Rockford neighborhoods.
The post office at N 6th Street maintains 124 PO Boxes and serves 117 business delivery points. All 62 ZIP+4 street records point to a single address with unit designators, indicating this ZIP exists to serve a concentrated downtown location rather than a residential area. There's no population assigned to this ZCTA because residents here receive mail through neighboring Rockford ZIP codes.
Rockford has multiple ZIP codes handling different delivery needs. The 61110 ZIP specifically handles PO Box services for businesses and individuals who prefer or need a downtown mailing address. Street delivery in this area comes from ZIP 61101, which geographically contains the 61110 service point. This split arrangement is common in larger cities where PO Box demand justifies a dedicated ZIP code.
All delivery records are for a single downtown address on N 6th Street.
ZIP Code 61110 supports both business and residential activity. According to the Business Census (2024), there are 4 business establishments, employing about 132 people with an annual payroll of $10,172,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 792Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 4Source: CBP |
| 1st Quarter Payroll: | $2,261,000Source: CBP |
| Annual Payroll: | $10,172,000Source: CBP |
| # of Employees: | 132Source: CBP |
ZIP Code 61110 is located in Winnebago County, Illinois, within the Rockford, IL Metropolitan Statistical Area (CBSA 40420) and Illinois's 17th Congressional District. This Metro area has a population of 349,431 people, about 0.00% of whom live in ZIP Code 61110. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Rockford, ILSource: Census |
| CBSA Number: | 40420Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 349,431Source: Census |
| MSA: | Rockford, IL MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 17Source: USPS |
| Congressional Land Area: | 6933.08 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 1765000Source: Census |
| Place Name: | Rockford city; IllinoisSource: Census |
We could not locate which school district 61110 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 March 1, 2026.