| Citizenship and Immigration Services | 
19,000 | 
$4.9 billion (Fiscal Year 2023) | 
https://www.uscis.gov/ | 
| Coast Guard Auxiliary | 
21,000 | 
$5.2 million (FY 2024) | 
https://www.cgaux.org/ | 
| Coast Guard Cyber Command | 
 | 
 | 
https://www.dco.uscg.mil/ | 
| Customs and Border Protection | 
60,000 | 
$17.5 billion (fiscal year 2024) | 
https://www.cbp.gov | 
| Federal Emergency Management Agency | 
13,000 | 
$25.3 billion (Fiscal Year 2023) | 
https://www.fema.gov | 
| Federal Law Enforcement Training Centers | 
1,500 | 
Approximately $260 million (fiscal year 2023) | 
https://www.fletc.gov | 
| Federal Protective Service | 
900 | 
Approximately $1 billion (fiscal year 2024) | 
https://www.dhs.gov/federal-protective-service | 
| Fire Administration | 
100 | 
Approximately $45 million (fiscal year 2024) | 
https://www.usfa.fema.gov | 
| Homeland Security Investigations | 
10,300 | 
$3.3 billion (Fiscal Year 2023) | 
https://www.dhs.gov/hsi | 
| Immigration and Customs Enforcement | 
20,000 | 
$8.3 billion (Fiscal Year 2023) | 
https://www.ice.gov | 
| National Flood Insurance Program | 
 | 
 | 
https://www.fema.gov/flood-insurance | 
| National Infrastructure Advisory Council | 
 | 
 | 
https://www.cisa.gov/niac | 
| National Interagency Confederation for Biological Research | 
 | 
 | 
https://nicbr.health.mil | 
| National Wildfire Coordinating Group | 
 | 
 | 
https://www.nwcg.gov | 
| Office for Domestic Preparedness | 
 | 
Not publicly specified, but part of federal homeland security funding | 
No longer operational; information now under [[FEMA]] - https://www.fema.gov/ | 
| Office of Intelligence and Analysis (Department of Homeland Security) | 
 | 
Not publicly disclosed separately from the DHS budget | 
https://www.dhs.gov/office-intelligence-and-analysis | 
| Office of Intelligence and Analysis (Treasury Department) | 
 | 
Not publicly disclosed separately from the DHS budget | 
https://www.dhs.gov/office-intelligence-and-analysis | 
| Office of the Chief Information Officer (Department of Homeland Security) | 
 | 
Part of the overall DHS budget; specific figures not disclosed | 
https://www.dhs.gov/ocio | 
| Plum Island Animal Disease Center | 
400 | 
$16.5 million (Annual budget as of 2002, exact current figures not publicly available) | 
 | 
| Secret Service | 
7,000 | 
$2.5 billion (Fiscal Year 2023) | 
https://www.secretservice.gov | 
| Secret Service Uniformed Division | 
1,300 | 
 | 
https://www.secretservice.gov/protection/uniformed-division | 
| Transportation Security Administration | 
55,000 | 
$8.4B (FY 2024) | 
https://www.tsa.gov/ |