Mo. Rev. Stat. § 59.170
The recorder of deeds for Jackson County, Missouri, shall open an office at Kansas City, in which may be recorded deeds, deeds of trust, mortgages and other instruments affecting real property situated in that county, and in which may be filed or filed for record all financing statements and other instruments or statements incidental thereto affecting personal property, fixtures, or other collateral. Deeds, deeds of trust, mortgages, and other instruments affecting real property, and financing statements and other instruments incidental thereto affecting personal property, fixtures, or other collateral may also be recorded or filed for record at the recorder's office located at the county seat of any county with a charter form of government and with more than six hundred thousand but fewer than seven hundred thousand inhabitants.
§ 59.170, RSMo
RSMo 1939 § 15662, A.L. 1965 p. 170, A.L. 1969 H.B. 677, A.L. 2006 H.B. 1707