| City: | Sioux Falls, South Dakota |
| County: | Minnehaha County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 7:48:04 AM |
| Population: | No Population Data |
| Area Code: | 605 |
| Classification: | PO Box |
| Coordinates: | 43.5503, -96.7002 |
| Quick Link: |
ZIP code 57101 serves downtown Sioux Falls, South Dakota. It's a PO Box ZIP embedded within the city's larger postal network. The post office at this location maintains 405 PO Boxes and handles mail for 571 businesses, making it a commercial mail hub rather than a residential one.
This ZIP has no residential population of its own. Instead, it exists as a point location enclosed by ZIP 57106. All 124 delivery records point to a single address: S 2nd Avenue. The building uses unit designations for its tenants. Sioux Falls has multiple standard ZIP codes providing street delivery, so 57101 fills a specialized role for businesses and individuals who prefer a PO Box address in the downtown core.
The location sits near several established neighborhoods including Augustana, Emerson, and Axtell Park. With 36 business establishments employing 498 workers recorded in the area, this ZIP functions as a business mail center.
It isn't a PO Box Only Zone, so customers have alternatives. They choose 57101 for the convenience of a central downtown mailbox.
All records point to a single downtown address with unit designations for multiple tenants.
ZIP Code 57101 supports both business and residential activity. According to the Business Census (2024), there are 39 business establishments, employing about 527 people with an annual payroll of $70,028,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 2,642Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 39Source: CBP |
| 1st Quarter Payroll: | $8,770,000Source: CBP |
| Annual Payroll: | $70,028,000Source: CBP |
| # of Employees: | 527Source: CBP |
ZIP Code 57101 is located in Minnehaha County, South Dakota, within the Sioux Falls, SD-MN Metropolitan Statistical Area (CBSA 43620). This Metro area has a population of 228,261 people, about 0.00% of whom live in ZIP Code 57101. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Sioux Falls, SD-MNSource: Census |
| CBSA Number: | 43620Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 228,261Source: Census |
| MSA: | Sioux Falls, SD MSASource: 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: | 4659020Source: Census |
| Place Name: | Sioux Falls city; South DakotaSource: Census |
ZIP Code 57101 is in the Sioux Falls School District 49-5, which serves grades Pre-Kindergarten thru 12th. There are 1 public school(s) in this ZIP Code, and we have located 3 private school(s). 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.