| City: | Sioux City, Iowa |
| County: | Woodbury County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 7:54:27 PM |
| Population: | No Population Data |
| Area Code: | 712 |
| Classification: | PO Box |
| Coordinates: | 42.5000, -96.4000 |
| Quick Link: |
ZIP code 51102 serves a concentrated portion of Sioux City, Iowa, anchored by Jackson Street. This PO Box ZIP maintains 389 boxes alongside 368 business addresses, functioning as a specialized postal facility within Woodbury County's largest city. The ZIP doesn't maintain its own geographic boundaries but operates as a point-of-service location within the broader 51101 ZIP code area.
The post office handles mail for a single street route covering 131 delivery points on Jackson Street, while most residents and businesses in the surrounding area receive carrier delivery through the neighboring 51101 ZIP code. This arrangement is typical for urban centers where PO Box-only facilities serve customers who prefer box service or operate businesses requiring downtown postal access. The facility's 368 business addresses suggest it serves commercial customers who maintain separate mailing addresses from their physical locations.
The single street serves a multi-unit building or complex with 131 delivery points on Jackson Street, indicating apartment or office units rather than diverse street coverage.
ZIP Code 51102 supports both business and residential activity. According to the Business Census (2024), there are 38 business establishments, employing about 837 people with an annual payroll of $64,276,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 781Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 38Source: CBP |
| 1st Quarter Payroll: | $17,059,000Source: CBP |
| Annual Payroll: | $64,276,000Source: CBP |
| # of Employees: | 837Source: CBP |
ZIP Code 51102 is located in Woodbury County, Iowa, within the Sioux City, IA-NE-SD Metropolitan Statistical Area (CBSA 43580) and Iowa's 4th Congressional District. This Metro area has a population of 144,007 people, about 0.00% of whom live in ZIP Code 51102. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Sioux City, IA-NE-SDSource: Census |
| CBSA Number: | 43580Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 144,007Source: Census |
| MSA: | Sioux City, IA-NE MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 04Source: USPS |
| Congressional Land Area: | 22756.75 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 1973335Source: Census |
| Place Name: | Sioux City city; IowaSource: Census |
We could not locate which school district 51102 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.