Chapters in Region
- Antelope Valley Group - Quartz Hill, California
- Inland Empire - Upland, California
- IPMS 101 Wonders - Oxnard, California
- Las Vegas - Las Vegas, Nevada
- Orange County - Buena Park, California
- Paso Robles - Templeton, California
- San Diego - El Cajon, California
- San Diego Model Car Club - San Diego, California