- 1951
Delaware Valley Chapter
- 1951
Golden Gate Chapter
- 1951
Los Angeles Chapter
- 1951
New York Chapter
- 1951
Ohio River Valley Chapter
- 1952
Chicago Chapter
- 1952
Minnesota Chapter
- 1952
Oregon Chapter
- 1954
Chesapeake Chapter
- 1955
Dallas Fort Worth Chapter
- 1955
Detroit Chapter
- 1955
Houston Chapter
- 1955
Virginia Chapter
- 1957
Atlanta Chapter
- 1957
Rhode Island/Central Massachusetts Chapter
- 1957
Québec Chapter
- 1958
Pittsburgh Chapter
- 1959
Central Ohio
- 1959
Connecticut Valley Chapter
- 1959
Northeast Ohio Chapter
- 1959
Washington Chapter
- 1959
Wisconsin Chapter
RIMS Chapters & Charter Dates
1950s
1960s
- 1960
Alabama Chapter
- 1960
Ontario Chapter
- 1961
Eastern Oklahoma Chapter
- 1961
St. Louis Chapter
- 1962
Broward County Chapter
- 1962
Massachusetts Chapter
- 1962
Memphis Chapter
- 1962
South Lousiana Chapter
- 1962
British Columbia Chapter
- 1963
Kansas Chapter
- 1964
Carolinas Chapter
- 1964
Greater Kansas City Chapter
- 1965
Southern Alberta Chapter
- 1966
New Jersey Chapter
- 1966
Upstate New York Chapter
- 1968
Hawaii Chapter
1970s
- 1970
Great Plains Chapter
- 1970
Indiana Chapter
- 1970
Rock River Valley Chapter
- 1971
Fairfield/Westchester Chapter
- 1971
Idaho Chapter
- 1971
Piedmont Chapter
- 1971
San Diego Chapter
- 1972
Tampa Bay Chapter
- 1973
Arizona Central Chapter
- 1973
Rocky Mountain Chapter
- 1976
Manitoba Chapter
- 1976
Orange County Chapter
- 1977
Western Michigan Chapter
- 1977
Dayton Miami Valley Chapter
- 1977
South Texas Chapter
- 1978
Central Penn Chapter
- 1978
Chicago Suburban Chapter
- 1978
Cumberland Chapter
- 1979
Northern Alberta Chapter
- 1979
Northeast Florida Chapter
- 1979
Canadian Capital Chapter
- 1979
Puerto Rico Chapter
1980s
- 1980
Central Illinois Chapter
- 1980
Arkansas Chapter
- 1980
Utah Chapter
- 1980
Potomac Chapter
- 1980
Western Carolina Chapter
- 1981
Central Oklahoma Chapter
- 1981
Silicon Valley Chapter
- 1981
Alaska Chapter
- 1981
Newfoundland & Labrador Chapter
- 1982
Saskatchewan Chapter
- 1983
Nova Scotia Chapter
- 1983
Shenendoah Valley Chapter
- 1987
Arizona Southern Chapter
- 1987
Central Texas Chapter
- 1987
Nevada Chapter
- 1989
Inland Empire Chapter
1990s
- 1990
Mid-Illinois Chapter
- 1990
Ozarks Area Chapter
- 1990
Central Florida Chapter
- 1990
Greater Quad Cities Chapter
- 1990
Toledo Chapter
- 1990
Sacramento Valley Chapter
- 1991
Palm Beach Chapter
- 1991
Southwest Florida Chapter
- 1991
Maritime Chapter
- 1993
Northwest Arkansas Chapter
- 1994
Greater Miami Chapter
- 1994
Smoky Mountain Chapter
- 1994
Mississippi Chapter
- 1995
Chattanooga Chapter
- 1996
Long Island Chapter
- 1996
West Virginia Chapter
2000s
- 2001
Japan Chapter
- 2004
Mexico Chapter
2010s
- 2013
Australasia Chapter
- 2013
Peru Chapter
- 2018
Spokane Chapter
- 2019
New Zealand and Pacific Islands Chapter
2020s
- 2020
India Chapter
- 2022
Greater Bluegrass Chapter