Miss. Code § 51-29-7
If land in more than one county is embraced in the proposed district, the application shall be addressed to the chancery court of any county of such district, and all proceedings shall be had in such chancery court. The chancery court, or the chancellor in vacation shall apportion all costs between the county or counties in proportion to the benefit assessed in each county, and such expenses as were incurred prior to the time when such assessment was made shall be apportioned between the counties in the proportion which the chancery court, or the chancellor in vacation, shall deem to be just and equitable. All notices, in that event, shall be published in newspapers having a bona fide circulation in each county in which the district embraces land. All such districts shall be numbered consecutively or else shall receive names selected by the chancery court or the chancellor in vacation.
Miss. Code § 51-29-7