More than 650 libraries around the world have chosen to include participation in Portico as one important component of their digital preservation strategy. Early participants are designated Archive Founders and are identified by an icon in the lists below.
| Libraries | Archive Founders |
|---|---|
| Adelphi University | yes |
| Alliant International University | yes |
| Amherst College | yes |
| Arizona State University, College of Law | yes |
| Arizona State University, Polytechnic | yes |
| Arizona State University, Tempe | yes |
| Arizona State University, West | yes |
| Arkansas State University, Jonesboro | yes |
| Art Institute of Boston at Lesley University | yes |
| Atlanta University Center | yes |
| Austin College | yes |
| Bates College | yes |
| Baylor University | yes |
| Boise State University | yes |
| Boston College | yes |
| Boston University | yes |
| Bowdoin College | yes |
| Bowie State University | yes |
| Brandeis University | yes |
| Brigham Young University, Hawaii | yes |