| 1 |  ssa.gov | Law and GovernmentGovernment | 25.8M | 30.1% | |
| 2 |  medlineplus.gov | Health | 19.5M | -13.5% | |
| 3 |  dhs.gov | Law and GovernmentGovernment | 7.7M | 4.1% | |
| 4 |  usda.gov | Education | 7.4M | -12.2% | |
| 5 |  uscis.gov | Law and GovernmentLaw and Government | 7.1M | -4.8% | |
| 6 |  ftc.gov | Law and GovernmentLaw and Government | 7.0M | 108.3% | |
| 7 |  usa.gov | Law and GovernmentGovernment | 5.9M | -37.5% | |
| 8 |  noaa.gov | Education | 5.5M | -28.3% | |
| 9 |  hhs.gov | Health | 4.5M | -7.9% | |
| 10 |  tsa.gov | Law and GovernmentGovernment | 4.2M | 28.6% | |
| 11 |  treasury.gov | Law and GovernmentGovernment | 3.9M | 0.7% | |
| 12 |  cbp.gov | Law and GovernmentGovernment | 3.9M | 1.1% | |
| 13 |  usgs.gov | Education | 3.8M | 30.0% | |
| 14 |  ed.gov | Education | 3.3M | -16.3% | |
| 15 |  epa.gov | Law and GovernmentGovernment | 2.9M | -1.9% | |
| 16 |  uscourts.gov | Law and GovernmentLegal | 2.8M | -3.3% | |
| 17 |  sec.gov | Law and GovernmentLegal | 2.7M | -2.5% | |
| 18 |  dol.gov | Jobs and CareerHuman Resources | 2.5M | -0.7% | |
| 19 |  opm.gov | Law and GovernmentNational Security | 2.4M | 8.1% | |
| 20 |  pay.gov | Law and GovernmentGovernment | 2.3M | 0.0% | |
| 21 |  census.gov | Law and GovernmentGovernment | 2.3M | -20.4% | |
| 22 |  sba.gov | Law and GovernmentGovernment | 1.9M | -6.4% | |
| 23 |  energy.gov | Education | 1.9M | -8.6% | |
| 24 |  fema.gov | Law and GovernmentGovernment | 1.8M | -18.4% | |
| 25 |  fcc.gov | Law and GovernmentLaw and Government | 1.7M | 0.1% | |
| 26 |  cpsc.gov | Law and GovernmentGovernment | 1.6M | 43.0% | |
| 27 |  nist.gov | Education | 1.6M | -15.4% | |
| 28 |  deltadental.com | Finance | 1.5M | -8.1% | |
| 29 |  ojp.gov | Law and GovernmentLegal | 1.5M | -1.0% | |
| 30 |  chicago.gov | Law and GovernmentGovernment | 1.2M | -3.4% | |
| 31 |  gsa.gov | Law and GovernmentNational Security | 1.2M | 2.4% | |
| 32 |  dea.gov | Health | 1.1M | -4.1% | |
| 33 |  covidtests.gov | Health | 1.1M | 9.8% | |
| 34 |  ice.gov | Law and GovernmentGovernment | 945.6K | 5.3% | |
| 35 |  osha.gov | Law and GovernmentGovernment | 853.3K | -13.2% | |
| 36 |  samhsa.gov | Health | 769.3K | -6.5% | |
| 37 |  blm.gov | Hobbies and LeisureCamping Scouting and Outdoors | 743.8K | -0.9% | |
| 38 |  sam.gov | Law and GovernmentGovernment | 728.4K | -0.7% | |
| 39 |  nsf.gov | Education | 704.1K | -7.0% | |
| 40 |  fdic.gov | Law and GovernmentGovernment | 604.3K | 6.8% | |
| 41 |  atf.gov | SportsHunting and Shooting | 594.5K | 8.9% | |
| 42 |  medicaid.gov | Health | 583.4K | 15.0% | |
| 43 |  eeoc.gov | Law and GovernmentLegal | 571.5K | -5.7% | |
| 44 |  usaid.gov | Law and GovernmentGovernment | 558.4K | -11.2% | |
| 45 |  cisa.gov | Law and GovernmentGovernment | 552.2K | -18.9% | |
| 46 |  news.va.gov | Law and GovernmentNational Security | 547.4K | -73.2% | |
| 47 |  grants.gov | Law and GovernmentGovernment | 546.7K | 3.6% | |
| 48 |  benefeds.gov | Law and GovernmentNational Security | 503.5K | 6.6% | |
| 49 |  hrsa.gov | Health | 492.2K | -7.7% | |
| 50 |  commerce.gov | Law and GovernmentGovernment | 491.9K | -14.5% | |