Modifies provisions relating to annexation

HB 631 changes Missouri's annexation rules for cities, towns, and villages. It replaces outdated sections with new provisions defining "contiguous and compact" land for annexation, clarifying that areas separated only by narrow strips (like railroads under 1/4 mile wide) cannot be annexed. The bill also requires cities to wait 24 months before annexing land recently added to their boundaries and allows annexation of correctional facilities within two miles of city limits if they border specific counties or have certain population sizes. These changes directly affect local governments seeking to expand their boundaries and property owners in unincorporated areas.