In 2025, the domain tools.usps.com was the most popular U.S. government domain, receiving over 289.44 million visits in the preceding 30 days. Two domains of the National Center for Biotechnology Information followed, with the domain pmc.ncbi.nlm.nih.gov registering 128.66 million visits and pubmed.ncbi.nlm.nih.gov receiving 112.31 million.
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US Government (USA.gov). (December 4, 2025). Most popular governmental web domains in the United States as of December 2025, based on number of unique visitors (in millions) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 16, 2026, from /statistics/416191/most-visited-fixed-access-us-web-properties/
US Government (USA.gov). "Most popular governmental web domains in the United States as of December 2025, based on number of unique visitors (in millions)." Chart. December 4, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 16, 2026. /statistics/416191/most-visited-fixed-access-us-web-properties/
US Government (USA.gov). (2025). Most popular governmental web domains in the United States as of December 2025, based on number of unique visitors (in millions). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 16, 2026. /statistics/416191/most-visited-fixed-access-us-web-properties/
US Government (USA.gov). "Most Popular Governmental Web Domains in The United States as of December 2025, Based on Number of Unique Visitors (in Millions)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 4 Dec 2025, /statistics/416191/most-visited-fixed-access-us-web-properties/
US Government (USA.gov), Most popular governmental web domains in the United States as of December 2025, based on number of unique visitors (in millions) ÌÇÐÄÆƽâ°æ, /statistics/416191/most-visited-fixed-access-us-web-properties/ (last visited July 16, 2026)
Most popular governmental web domains in the United States as of December 2025, based on number of unique visitors (in millions) [Graph], US Government (USA.gov), December 4, 2025. [Online]. Available: /statistics/416191/most-visited-fixed-access-us-web-properties/
