Monthly Member Highlight: September
| Cintas Corporation | 9/1/1961 |
| American Rock Products | 9/1/1967 |
| Yakima Waste Systems, Inc. | 9/1/1978 |
| McDonald's of Yakima County | 9/1/1980 |
| Engravings Unlimited, Inc. | 9/1/1981 |
| Edward Jones - Gailon Gentry, Financial A | 9/2/1990 |
| AB Transmission, LLC | 9/4/2002 |
| Stoneway Electric Supply | 9/16/2002 |
| Delaney's Lost Sock Laundromat | 9/12/2005 |
| Invisible Ink | 9/9/2009 |
| Baird | 9/29/2009 |
| Magic Metals, Inc. | 9/8/2011 |
| Larson Gallery Guild | 9/28/2012 |
| City of Union Gap | 9/6/2013 |
| Paragon Films | 9/27/2013 |
| Good Samaritan Healthcare Center | 9/20/2016 |
| Habitat for Humanity, Yakima Valley Partners | 9/26/2016 |
| Housing Authority of the City of Yakima | 9/11/2017 |
| Five Guys Burgers and Fries | 9/20/2018 |
| LS Networks | 9/9/2019 |
| Yakima Branding | 9/3/2021 |
| Veterinary Medical Research and Development | 9/21/2021 |
| Ziply Fiber | 9/1/2022 |
| Realty One Group | 9/14/2022 |
| Yakima Valley Memorial Hospital | 9/16/2022 |
| Chamberlin Distributing Company, Inc | 9/19/2022 |
| Xochitl's Mexican American Street Food | 9/19/2023 |
| Yakima School District No. 7 | 9/27/2023 |
| Complete Healthcare for Women | 9/17/2024 |
| Central Washington Physical Therapy | 9/4/2025 |
| Washington Neurology and Physicians | 9/11/2025 |