| Past NWBIO conferences | ||
| Year | Host | Location |
| 2025 | Columbia Basin College | Washington |
| 2024 | Whatcom Community College | Washington |
| 2023 | Centralia College & South Puget Sound CC | Washington |
| 2022 | UW Bothell & Cascadia College | Washington |
| 2021 | no conference held | |
| 2020 | Wenatchee Valley College (canceled) | Washington |
| 2019 | Chemeketa Community College: Yamhill Valley | Oregon |
| 2018 | Portland Community College | Oregon |
| 2017 | University of Washington: Tacoma & Tacoma CC | Washington |
| 2016 | Lane CC & University of Oregon | Oregon |
| 2015 | University of British Columbia | British Columbia |
| 2014 | Bellevue Community College | Washington |
| 2013 | Columbia Basin College | Washington |
| 2012 | Everett Community College | Washington |
| 2011 | Yakima Valley Community College | Washington |
| 2010 | Grays Harbor College | Washington |
| 2009 | Clatsop Community College | Oregon |
| 2008 | Chemeketa Community College | Oregon |
| 2007 | Edmonds Community College | Washington |
| 2006 | Bellevue Community College | Washington |
| 2005 | Mt Hood Community College | Oregon |
| 2004 | University of Washington: Tacoma & Tacoma CC | Washington |
| 2003 | Yakima Valley Community College | Washington |
| 2002 | Olympic College & North Seattle CC | Washington |
| 2001 | Clark College | Washington |
| 2000 | Langara College & University of British Columbia | British Columbia |
| 1999 | Lane CC & University of Oregon | Oregon |
| 1998 | Seattle Central CC & Seattle Pacific University | Washington |
| 1997 | Everett CC & University of Washington | Washington |
| 1996 | Grays Harbor College | Washington |
| 1995 | Mt Hood CC & Portland CC | Oregon |
| 1994 | Spokane Falls CC & Washington State University | Washington |
| 1993 | North Seattle CC & Bellevue CC | Washington |
| 1992 | Yakima Valley CC & Central Washington University | Washington |
| 1991 | Shoreline CC & Skagit Valley CC | Washington |
| 1990 | Lower Columbia Community College | Washington |
| 1989 | Eastern Washington University | Washington |
| 1988 | Fraser Valley College | British Columbia |
| 1987 | Seattle University | Washington |
| 1986 | Everett Community College | Washington |
| 1985 | Big Bend Community College | Washington |
| 1984 | Selkirk College | British Columbia |
| 1983 | University of Washington | Washington |
| 1982 | Skagit Valley Community College | Washington |
| 1981 | Spokane Community College | Washington |
| 1980 | Evergreen State College | Washington |
| 1979 | Seattle Pacific University | Washington |
| 1978 | Centralia College & Central Washington University | Washington |
| 1977 | Columbia Basin College | Washington |
| 1976 | Peninsula Community College | Washington |
| 1975 | Tacoma Community College | Washington |
| 1974 | Spokane Falls Community College | Washington |
| 1973 | Highline Community College | Washington |
| 1972 | Bellevue Community College | Washington |
| 1971 | Grays Harbor College | Washington |
| 1970 | Wenatchee Valley College | Washington |
| 1969 | Green River Community College | Washington |
| 1968 | Everett Community College | Washington |
| 1967 | Shoreline Community College | Washington |
| 1966 | Shoreline CC & Everett CC | Washington |