Area code 636

Largest exchanges

• St Charles44
• Chesterfld36
• Harvester36
• Manchester27
• Ofallon24
• Fenton16
• Fsscrstlcy16
• St Peters15
• Valleypark14
• Wentzville14

Largest carriers

• Southwestern Bell110
• Brightspeed Of Missouri, LLC49
• Onvoy, LLC - Mo36
• T-mobile Usa, Inc.35
• New Cingular Wireless Pcs, LLC - Il29
• Level 3 Communications, LLC - Mo29
• Mcimetro Access Transmission Services LLC - Mo28
• Paetec Itel, LLC25
• Cellco Partnership dba Verizon Wireless - Mo20
• Charter IP Enabled Services, LLC18

Most reported 636 numbers

No visitor reports yet in this area code.

FCC complaints

• 636-260-52811 · 2026-10-07
• 636-389-98501 · 2026-10-07
• 636-566-02431 · 2026-10-07
• 636-851-00811 · 2026-10-06