Taxpayer Services | Internal Revenue Service
Resource Name:Taxpayer Services | Internal Revenue Service
Internal Revenue Service - Sioux City
address
3539 Southern Hills Drive, Sioux City, IA 51106
Eligibility
Open to anyone
Required documents
Varies by service
Hours
Mon-Fri 8:30 am-12:30 pm and 1:30 pm-4:30 pm, by appointment
Website
https://www.irs.govApplication process
Call for information or visit for services
Fees
None
Service area
IA
NE
Information about tax accounts. Processes applications for Federal Tax Identification Numbers.
- Taxpayer Advocacy Services provide free, independent, and confidential tax assistance to taxpayers unable to resolve their tax problems through normal channels or individuals experiencing a hardship. Helps individual and business taxpayers resolve problems with the IRS.
Last assured
08/14/2026
Providing organization
Internal Revenue Service
Federal tax agency.