| City: | Cedar Rapids, Iowa |
| County: | Linn County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 7:19:59 AM |
| Population: | No Population Data |
| Area Code: | 319 |
| Classification: | PO Box |
| Coordinates: | 42.0083, -91.6437 |
| Quick Link: |
ZIP code 52406 isn't a neighborhood or town. It's Cedar Rapids' downtown post office at 6th Avenue SE, a dedicated facility for PO Box customers and businesses in Iowa's second-largest city. The ZIP has no resident population because it covers only the post office building itself, which sits inside the larger 52401 ZIP code.
The post office maintains 230 PO Boxes and serves 476 business addresses. Those 43 registered establishments employ 2,539 workers, suggesting this ZIP captures part of Cedar Rapids' commercial core. Businesses use 52406 for their mailing addresses while the surrounding residential areas get street delivery through standard Cedar Rapids ZIP codes.
This isn't a PO Box Only Zone. Cedar Rapids residents have full street delivery available. The 52406 ZIP exists specifically to separate post office box traffic from residential carrier routes. Downtown businesses, law firms, and organizations that prefer PO Box addresses use this ZIP, keeping their mail separate from the city carrier system that handles the broader metro area.
All records point to one address, confirming this is a single-facility ZIP.
ZIP Code 52406 supports both business and residential activity. According to the Business Census (2024), there are 45 business establishments, employing about 2,908 people with an annual payroll of $223,369,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 1,681Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 45Source: CBP |
| 1st Quarter Payroll: | $64,751,000Source: CBP |
| Annual Payroll: | $223,369,000Source: CBP |
| # of Employees: | 2,908Source: CBP |
ZIP Code 52406 is located in Linn County, Iowa, within the Cedar Rapids, IA Metropolitan Statistical Area (CBSA 16300) and Iowa's 2nd Congressional District. This Metro area has a population of 257,940 people, about 0.00% of whom live in ZIP Code 52406. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Cedar Rapids, IASource: Census |
| CBSA Number: | 16300Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 257,940Source: Census |
| MSA: | Cedar Rapids, IA MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 02Source: USPS |
| Congressional Land Area: | 12261.92 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 1912000Source: Census |
| Place Name: | Cedar Rapids city; IowaSource: Census |
We could not locate which school district 52406 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.