Mo. Rev. Stat. § 486.295
Any notary public who changes the address of his or her residence in the county within and for which he or she is commissioned shall forthwith mail or deliver within thirty days of such change a notice of the fact to the secretary of state including his or her old address and current address. The notary's commission shall remain in effect until its expiration date, unless sooner revoked.
(L. 1977 H.B. 513 § 21, A.L. 1981 H.B. 388, A.L. 2004 H.B. 1193)