| City: | Twin Falls, Idaho |
| Names to Avoid: | Csi |
| County: | Twin Falls County |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 10:09:04 AM |
| Population: | No Population Data |
| Area Codes: | 208 / 986 |
| Classification: | PO Box |
| Coordinates: | 42.5632, -114.4600 |
| Quick Link: |
ZIP code 83303 in Twin Falls, Idaho functions as a PO Box facility serving the surrounding area. While the ZIP itself contains only PO Boxes, it operates within a city that has standard street delivery through neighboring ZIP codes. The post office maintains 922 PO Boxes, with 744 business customers among the total users.
The facility supports carrier delivery along two street routes: West 2nd Avenue and Fillmore Street. West 2nd Avenue accounts for 164 ZIP+4 records with unit designations, while Fillmore Street has 49 records. This limited street infrastructure within the PO Box ZIP reflects its role as a supplementary postal designation within the larger Twin Falls area. The city delivery indicator confirms that residents and businesses in this zone have access to standard carrier services through the primary Twin Falls ZIP codes.
The street names follow Twin Falls' established grid pattern with numbered avenues and presidential street names. West 2nd Avenue's high record count suggests it's a main commercial corridor, while Fillmore Street represents the traditional naming convention found in many Idaho communities.
ZIP Code 83303 supports both business and residential activity. According to the Business Census (2024), there are 59 business establishments, employing about 1,312 people with an annual payroll of $80,355,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 1,710Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 59Source: CBP |
| 1st Quarter Payroll: | $20,018,000Source: CBP |
| Annual Payroll: | $80,355,000Source: CBP |
| # of Employees: | 1,312Source: CBP |
ZIP Code 83303 is located in Twin Falls County, Idaho, within the Twin Falls, ID Metropolitan Statistical Area (CBSA 46300) and Idaho's 2nd Congressional District. This Metro area has a population of 99,604 people, about 0.00% of whom live in ZIP Code 83303. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Twin Falls, IDSource: Census |
| CBSA Number: | 46300Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 99,604Source: Census |
| MSA: | Source: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 02Source: USPS |
| Congressional Land Area: | 43225.09 sq miSource: Census |
| PMSA: | Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 1682810Source: Census |
| Place Name: | Twin Falls city; IdahoSource: Census |
We could not locate which school district 83303 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.