Here is a list of the states and LSCs in the Western Zone.

• Alaska
  • LSC: Alaska Swimming (AK)
• Arizona
  • LSC: Arizona Swimming (AZ)
• California
  • LSC
    • Central California Swimming (CC)
    • Pacific Swimming (PC) - partial
    • San Diego-Imperial Swimming (SI)
    • Sierra Nevada Swimming (SN) - partial
    • Southern California Swimming (CA) - partial
• Colorado
  • LSC: Colorado Swimming (CO)
• Hawaii
  • LSC Hawaiian Swimming (HI)
• Idaho
  • LSC:
    • Inland Empire Swimming (IE) - partial
    • Snake River Swimming (SR) - partial
• Montana
  • LSC: Montana Swimming (MT)
• Nevada
  • LSC
    • Pacific Swimming (PC) - partial
    • Sierra Nevada Swimming (SN) - partial
    • Snake River Swimming (SR) - partial
    • Southern California Swimming (CA) - partial
• New Mexico
  • LSC: New Mexico Swimming (NM)
• Oregon
  • LSC:
    • Inland Empire Swimming (IE) - partial
    • Oregon Swimming (OR) - partial
• Utah
  • LSC: Utah Swimming (UT)
• Washington
  • LSC:
    • Inland Empire Swimming (IE) - partial
    • Oregon Swimming (OR) - partial
    • Pacific Northwest Swimming (PN)
• Wyoming
  • LSC: Wyoming Swimming (WY)
    • also includes a portion of Nebraska.