Office of Pettis County GIS/911

Pettis County Public Safety Building

Director James Theisen
319 S Lamine
Sedalia, Missouri 65301

Phone: 660.827.4800


G.I.S./Addressing/Flood Plain Management


Office Hours: Monday-Friday 8am-5pm



Addressing in Pettis County
When someone asks where to get an address, the answer will depend on where the property is located. 

  • Property inside of an incorporated city (Sedalia, LaMonte, Green Ridge, Smithton or Houstonia) will be addressed by the respective city.
  • Sedalia contact: Andrew Burt, Building Official, 660-827-3000 ext. 148
  • LaMonte contact: City Clerk, 660-347-5606
  • Green Ridge contact: City Clerk, 660-527-3541
  • Smithton contact: City Clerk, 660-343-5444
  • Houstonia contact: City Clerk, 660-568-3555


  • Property inside of Pettis County but outside of an incorporated city will be addressed by the Pettis County Assessors Office -- Located on the 2nd floor of the Pettis County Courthouse