1953
| Outagamie County Employees Credit Union is organized. |
| 1966 | Maury Dresang is asked to manage Zwickernit Credit Union |
| 1969 | Maury Dresang is asked to manage the Postal Employees Credit Union |
| 1970 | Outagamie County Employees Credit Union, Zwickernit Credit Union and Postal Employees Credit Union form the Appleton Credit Union Service Center |
| 1975 | The Appleton Community Credit Union is chartered. |
| 1978 | 13 Service Center credit unions merge into the Appleton Area Credit Union |
| 1983 | September 20, 1983 the Appleton Area Credit Union becomes Community First Credit Union |
| 1984 | April 1984, Oneida Street Branch opens |
| 1986 | The Community First Insurance Center is incorporated |
| 1986 | December 1, 1986, Allis Chalmers Appleton Employee Credit Union merges with Community First Credit Union |
| 1987 | January 5, 1987, the Ballard Road Branch becomes Community First's fourth location |
| 1989 | February 1, 1989, the Waupaca Area Credit Union merges with Community First |
| 1988 | July 1988, the Nicolet Branch Opens |
| 1988 | Fall 1988, new branch building in Waupaca opens |
| 1989 | November 1989, Industrial Drive Branch opens |
| 1991 | October 1991, the branch at the King Veterans Home opens |
| 1995 | September 1995, corporate office opens on Oneida Street in Appleton |
| 1999 | Members Financial Service begins offering members investment and financial management options |
| 1999 | Community First unveils its newest location www.communityfirstcu.org |
| 2001 | March 2001, Oshkosh branch opens |
| 2001 | Community First student-run branch opens at Appleton West High School |
| 2001 | Community First opens a branch and convenience store at Touchmark Retirement Community |
| 2001 | Lakeport Credit Union in Manitowoc joins Community First |
| 2003 | New branches in both Darboy and Greenville open |
| 2003 | Branches at Appleton North High School and Oshkosh West High School open |
| 2004 | Appleton East High School Branch opens |
| 2004 | New branch opened in Manitowoc |
| 2004 | Wolf River Credit Union merges with Community First Credit Union |
| 2006 | Charter Expansion into the counties of Shawano, Oconto, Sheboygan, Fond du Lac, Green Lake and Waushara. |
| 2006 | New Branch at Fox Valley Technical College |
| 2006 | Nichols Branch opens |
| 2008 | Community First marks $1 Billion in assets |
| 2008 | Miller Electric Credit Union merges with Community First Credit Union. |
| 2009 | Opened our first Brown County Branch, in De Pere |
| 2009 | Opened a second Oshkosh Branch on South Park Street |
| 2009 | Opened Jefferson Elementary School Branch providing financial education and hands-on branch experience for kindergarten through 6th grade students. |
| 2010 | Community First Fox Cities Marathon had its 20th anniversary. |
| 2010 | Community First was the proud sponsor of the Lexington Homes BIG BUILD 2010 for Extreme Makeover: Home Edition. |
| 2010 | Manitowoc County Employees Credit Union merges with Community First Credit Union. |
| 2011 | Menasha Corporation Employees Credit Union merges with Community First Credit Union |
| 2011 | WPS Credit Union, Oshkosh merges with Community First Credit Union |
| 2012 | Community First opens a branch at Appleton Retirement Community |
| 2012 | Opened our Howard Branch in Green Bay. |
| 2012 | NewVISION Credit Union merges with Community First. |
| 2012 | Opened Roosevelt/Kaleidoscope Academy Middle School Credit Union providing financial education and hands-on branch experience for the students. |
| 2013 | Prime Financial Credit Union joins Community First and is now our Two Rivers Branch. |