usa.gov draws its headings and body text in Source Sans 3. It uses 2 fonts in all. We measured it on October 21, 2026.
The fonts usa.gov draws
| Font | Used for | Share of its custom-font text | Licence | How common |
|---|---|---|---|---|
| Source Sans 3 | Headings, Body text | 97.1% | Open source | 9 of 407 sites (rank 4) |
| Merriweather | Smaller text | 2.9% | Open source | 2 of 407 sites (rank =29) |
Share is how much of the page’s custom-font text each font draws. System fonts and icon fonts are never counted. Each site was opened twice in a real browser and Chrome was asked which font file drew each piece of text. We count a font for a site only if both runs saw it and it drew at least 2% of the site’s custom-font text. The full method.
Can I use the same fonts?
- Source Sans 3 is open source and free to use, including commercially. Get it from Google Fonts.
- Merriweather is open source and free to use, including commercially. Get it from Google Fonts.
usa.gov among nonprofit, government and reference sites
usa.gov is one of the 11 nonprofit, government and reference sites we measured. Across them, Merriweather is the most used font you can get, on 2 of the 11 (18%). All the fonts nonprofit, government and reference sites use.
What pairing does usa.gov use?
usa.gov uses one family, Source Sans 3, for both headings and body text. So do 280 of the 407 sites we analyzed (69%). Pairings of two different fonts.
Other nonprofit, government and reference sites we measured
- eff.org Merriweather, Montserrat
- greenpeace.org Source Sans 3, Greenpeace Sans
- creativecommons.org DM Sans, DM Mono
- esa.int NotesEsa
- mozilla.org Mozilla
- redcross.org Roboto, Open Sans
See the fonts on all 407 sites.
FAQ
What font does usa.gov use?
usa.gov draws its headings and body text in Source Sans 3. It uses 2 fonts in all: Source Sans 3, Merriweather. We measured it on October 21, 2026.
Is Source Sans 3 free?
Yes. Source Sans 3 is open source and free for commercial use, according to Google Fonts.
What font pairing does usa.gov use?
One family, Source Sans 3, for both headings and body text.
Can I use the same fonts as usa.gov on my own site?
Only if the licence allows it. Free and open-source fonts can be used freely. Commercial fonts need your own licence, even though you can see the file on usa.gov. Each font's licence is on this page, from its source.
How do you know which font usa.gov uses?
We opened usa.gov in a real browser and asked Chrome which font file drew each piece of text, twice in separate sessions. A font counts only if both runs saw it and it drew at least 2% of the site's custom-font text.
Can I check a different website?
Yes. Paste its address into the free font finder.