| No. | Name | Type | Language | Counties |
|---|---|---|---|---|
| 0 | JOAQUINA CONTRERAS | Standardized | English, Spanish | Gilliam, Hood River, Sherman, Wasco, Wheeler |
| 0 | Claudia Contreras-Peters | Master | English, Spanish | Clackamas, Multnomah, Washington |
| 0 | JEANNINE COOK | Not given | English | Linn |
| 0 | MERRILEE COOLEY | Standardized | English | Columbia |
| 0 | VELVET COOLEY | Master | English | Clackamas, Multnomah, Tillamook, Washington |
| 0 | CHRISTOPHER PATRICK COOPER | Standardized | English, Spanish | Morrow, Umatilla |
| 0 | PATTY COOPER | Standardized | English | Clackamas, Multnomah, Washington, Yamhill |
| 0 | Shannon Shawn Cooper | Standardized | English | Lane |
| 1 | Chelsea Rene Coots | Master | English | Marion, Polk, Yamhill |
| 0 | Margaret Hemphill Copeland | Standardized | Spanish | Jackson, Josephine |
| 0 | Jacquelyn Kae Cordero | Community | English | Coos, Curry, Jackson, Josephine, Klamath |
| 0 | JESSICA MARIE CORDERO | Community | English | Coos, Curry, Jackson, Josephine |
| 0 | TONYA LYNN CORDERO | Standardized | English | All |
| 0 | APRIL K CORIL | Master | English | Clackamas, Marion, Multnomah, Washington |
| 7 | Jennifer Michelle Cork | Master | English | Benton, Clatsop, Columbia, Lincoln, Linn, Marion, Multnomah, Polk, Tillamook, Washington, Yamhill |
| 0 | JODIE CORLESS | Not given | English | Marion |
| 1 | Estonia Latavia Cornett | Master | English | Clackamas, Multnomah, Washington |
| 0 | Lorena Cortes Gonzalez | Standardized | English, Spanish | Morrow, Umatilla |
| 0 | Andrea Kay Cortese | Community | English | Clackamas, Hood River, Lane, Marion, Multnomah, Wasco, Washington |
| 0 | APRIL COTE | Community | English | Clackamas, Multnomah |