User groups were a popular way to meet with other Sinclair and Timex computer owners, exchange ideas, news, demonstrate software and hardware and more. Many user groups published their own newsletters and exchanged newsletters with other user groups. Magazines like Sync included listings of groups being formed and established groups, helping extend the reach of the local groups.
United States
Alabama
Alaska
Arizona
California
- Association of Greater Bay Area Timex User Groups
- Bakersfield Timex Sinclair Users Group
- Bay Area ZX User Group
- CompuT/S Club
- East Bay Z80 User Group
- Easy Bay Timex/Sinclair User Group (EBZUG)
- Group Using TS of Silicon Valley (GUTS/SV)
- Monterey Timex/Sinclair Computer Club
- Peninsula Timex/Sinclair User Group (PUG)
- Perkin-Elmer User's Group
- Sacramento Timex/Sinclair User Group
- San Diego Timex/Sinclair Users Group
- San Francisco Bay Area Sinclair ZX Users Group (ZUG)
- Silicon Valley Sinclair Technology User Group
- Silicon Valley Timex/Sinclair User Group (SVTUG)
- South Bay Computer Club
- South Bay Timex/Sinclair Users Group
- T/S 1000 Users Group
- Timex and Sinclair Bay Area Microcomputer
- Timex Sinclair Special Interest Group (SIG) of the San Diego Computer Society
- Timex Sinclair Users Group (Hughes Aircraft Company)
- Timex Sinclair Users Group Of Merced
- Timex Sinclair Users Nationally Active Megagroup, Inc.
- West Los Angeles ZX Users Group
- ZX81/TS1000 Users Group
Colorado
Connecticut
- Greater New Haven Timex Sinclair User Group
- New Haven Sinclair Study Group
- Sinclair/Timex Users Group (Wallingford)
District of Columbia
Florida
- East Bay T/S User Group
- Florida Suncoast ZX/TS Computer Society
- Gainesville Sinclair/Timex Users Group
- Northeast Florida Timex/Sinclair Users Group
- Northwest Florida 2068 Timex Sinclair User Group
- Orlando Area Sinclair Users Group
- Sinclair Northamerica Users Group (SNUG)
- South Florida Timex/Sinclair Users Group
- Space Coast Microcomputer Club
- St. Petersburg Chapter of TAS BAH
- Sun Lake User Group
- TAS BAM User Group
- Timex/Sinclair Computer Club of Central Florida
- Tmex-Sinclair User's Group
- ZX80 Southeast Region Club
Georgia
- Atlanta Sinclair/Timex Users Group
- Atlanta Timex Users Group
- Metro-Atlanta Area ZX Users
- Timex User Group of Marietta, Georgia
Illinois
- Chicago Area Computer Hobbyist Exchange Sinclair ZX Special Interest Group
- Chicago Area Timex Users Group (CATUG)
- Chicago/Des Plaines Area Sinclair Users Group
- Sinclair Users Network
- Sinclair-Timex TS/ZX SIG
- Timex/Sinclair NorthAmerican User Groups
Indiana
Iowa
- CRAGIST (Cedar Rapids And Greater Iowa Sinclair Timex)
- Omaha/Council Bluffs Area Timex Sinclair Group
Kansas
Kentucky
Louisiana
Maryland
- Baltimore ZX/Timex Group
- Bowie Timex-Sinclair Computer Club
- Capital Area Timex Sinclair Users Group
- Lanham Sinclair Users Group
- Prince George's Sinclair Users Group (PG-ZUG)
- Westinghouse Timex/Sinclair Users Group
Massachusetts
- Mitre Bedford Sinclair/Timex Computer Club
- NEQLUG
- New England Sinclair QL Users Group
- Sinclair/Timex User Group of the Boston Computer Society
- U.S. National ZX User's Group
Michigan
- Michigan Area Users' Group
- Northern Michigan User Group
- SAF User Group (SAFUG)
- Southeastern Michigan Computer Organization (SEMCO), Sinclair Special Interest Group
- Tri-City Timex Sinclair User Group
Missouri
- Computer Users Group Timex Sinclair 1000 & ZX80/81
- McDonnell Douglas Recreational Computer Club, Timex/Sinclair SIG
- Timex/Sinclair Users Group of Kansas City
Nebraska
Nevada
New Jersey
- AERCO Disc Nationwide Users Group
- Cumberland County Area Timex/Sinclair Users
- Timex User Group of Central Jersey
New Mexico
New York
- Capital District T/S Computer Club
- DATAMerica Computer Users Group
- LIST (Long Island Sinclair Timex)
- Mid-Hudson Users Group
- Sinclair Computer Users Society (SINCUS)
- Sinclair User Group of Western New York
- Sinclair Users Group Newsletter
- Upperstate New York ZX81 Users
- ZX Users Group of New York
North Carolina
Ohio
- Dayton Area Timex/Sinclair Users Group of DMA, Inc.
- Greater Cleveland Sinclair Users Group
- Portsmouth Ohio Region Timex-Sinclair (PORTS) User Group
- RAMTOP
- T/S Minds User Group
- Timex/Sinclair Users Group of Cincinnati
- Yet Another Orphan User Group (YAOUG)
Oklahoma
Oregon
Pennsylvania
- Central Pennsylvania ZX Users Group
- Central Pennsylvania ZX/TS Users Group
- Harrisburg Area Timex Sinclair Users Group
- PACC Timex/Sinclair Special Interest Group
- Pittsburgh Area Computer Club (SIG: Sinclair)
- Timex Sinclair User Group-Philadelphia
- Westmoreland Community College Timex Sinclair Special Interest Group
Rhode Island
South Carolina
- Allendale County Computer Users' Group
- Chattanooga Area Sinclair Users
- Timex Sinclair User Group of Charleston
Tennessee
- Chattanooga Area Sinclair Users
- Memphis ZX81 Users Group
- Mid-South Timex/Sinclair Computer Users Group
Texas
- Abilene TSUG
- Amarillo Timex Sinclair Users Group
- Dallas Timex Sinclair User Group
- Dallas Timex/Sinclair/Amstrad Users Group
- Educator's User Group
- Houston (West) Timex/Sinclair Users Group
- Quantum Leap User Group
- San Antonio Timex/Sinclair User Group
- Timex/Sinclair Users Group Of Fort Worth
Utah
Virginia
- Capital Area Timex Sinclair Users Group
- Central VA User Group
- Colonial Pennwild TS User Group
- Hampton Roads Timex Sinclair Users Group
- Richmond Area Timex/Sinclair Users Group
- Southern Virginia Timex Sinclair Users Network
Washington
- Seattle Area Timex User Group
- Vashon Island Sinclair Timex Association (VISTA)
- World Wide User Group
West Virginia
Wisconsin
Canada
- (Ottawa-Hull) Timex-Sinclair User Group
- Toronto Timex-Sinclair Users Club
- Vancouver Sinclair Users Group
- Victoria Sync Association
- Waterloo/Wellington Timex Sinclair Users Group
- ZX81 User Club