Agency Directory

Browse 626+ federal agencies

FOIA contact information, mailing addresses, online portals, and processing times for federal departments and agencies.

Agency	Parent Department	Online Portal	Avg. Simple (days)
Idaho Operations Office ID Department of Energy	Department of Energy	Mail / Email	N/A
Immediate Office of the Secretary IOS Department of Energy	Department of Energy	Mail / Email	N/A
Indian Health Service IHS Department of Veterans Affairs	Department of Veterans Affairs	Mail / Email	N/A
Indianapolis District Office (Detroit Field Office; Cincinnati and Louisville Area Offices) Indianapolis Department of Justice	Department of Justice	Mail / Email	N/A
Information Law Division InfoLaw Agency Overall	Agency Overall	Mail / Email	N/A
Institute of Education Sciences IES Agency Overall	Agency Overall	Mail / Email	N/A
Institute of Education Sciences - National Assessment Governing Board IES-NAGB Agency Overall	Agency Overall	Mail / Email	N/A
Institute of Museum and Library Services IMLS Agency Overall	Agency Overall	Mail / Email	9
Inter-American Foundation IAF Agency Overall	Agency Overall	Mail / Email	14
Internal Revenue Service - Headquarters Office IRS Department of the Treasury	Department of the Treasury	Mail / Email	N/A
International Trade Administration ITA Department of Commerce	Department of Commerce	Mail / Email	N/A
INTERPOL-United States National Central Bureau USNCB Department of Labor	Department of Labor	Mail / Email	N/A