§ 172. Establishment and abolishment of inferior courts
The Legislature shall, from time to time, establish such other inferior courts as may be necessary, and abolish the same whenever deemed expedient.
Statutory Courts include the Court of Appeals, County Courts, Youth Courts, and Municipal Courts.
Here are some statutes that apply:
§ 9-4-1. Establishment of Court of Appeals
(1) There is hereby established a court to be known as the “Court of Appeals of the State of Mississippi,” which shall be a court of record.
(2) The Court of Appeals shall be comprised of ten (10) appellate judges, two (2) from each Court of Appeals District, selected in accordance with Section 9-4-5.
§ 9-4-3. Jurisdiction of court; issuance of decisions
(1) The Court of Appeals shall have the power to determine or otherwise dispose of any appeal or other proceeding assigned to it by the Supreme Court.
The jurisdiction of the Court of Appeals is limited to those matters which have been assigned to it by the Supreme Court.
The Supreme Court shall prescribe rules for the assignment of matters to the Court of Appeals. These rules may provide for the selective assignment of individual cases and may provide for the assignment of cases according to subject matter or other general criteria. However, the Supreme Court shall retain appeals in cases imposing the death penalty, or cases involving utility rates, annexations, bond issues, election contests, or a statute held unconstitutional by the lower court.
(2) Decisions of the Court of Appeals are final and are not subject to review by the Supreme Court, except by writ of certiorari. The Supreme Court may grant certiorari review only by the affirmative vote of four (4) of its members. At any time before final decision by the Court of Appeals, the Supreme Court may, by order, transfer to the Supreme Court any case pending before the Court of Appeals.
(3) The Court of Appeals shall have jurisdiction to issue writs of habeas corpus, mandamus, quo warranto, certiorari, prohibition or any other process when this may be necessary in any case assigned to it by the Supreme Court.
(4) The Court of Appeals shall issue a decision in every case heard before the Court of Appeals within two hundred seventy (270) days after the final briefs have been filed with the court.
(5) The Supreme Court shall issue a decision in every case within its original jurisdiction, including all direct and post-conviction collateral relief appeals or applications in cases imposing the death penalty, within two hundred seventy (270) days after the final briefs have been filed with the court. The Supreme Court shall issue a decision in every case received on certiorari from the Court of Appeals within one hundred eighty (180) days after the final briefs have been filed with the court.
§ 9-9-21. Jurisdiction [County Court]
(1) The jurisdiction of the county court shall be as follows: It shall have jurisdiction concurrent with the justice court in all matters, civil and criminal of which the justice court has jurisdiction; and it shall have jurisdiction concurrent with the circuit and chancery courts in all matters of law and equity wherein the amount of value of the thing in controversy shall not exceed, exclusive of costs and interest, the sum of Two Hundred Thousand Dollars ($ 200,000.00), and the jurisdiction of the county court shall not be affected by any setoff, counterclaim or cross-bill in such actions where the amount sought to be recovered in such setoff, counterclaim or cross-bill exceeds Two Hundred Thousand Dollars ($ 200,000.00). Provided, however, the party filing such setoff, counterclaim or cross-bill which exceeds Two Hundred Thousand Dollars ($ 200,000.00) shall give notice to the opposite party or parties as provided in Section 13-3-83, and on motion of all parties filed within twenty (20) days after the filing of such setoff, counterclaim or cross-bill, the county court shall transfer the case to the circuit or chancery court wherein the county court is situated and which would otherwise have jurisdiction. It shall have exclusively the jurisdiction heretofore exercised by the justice court in the following matters and causes: namely, eminent domain, the partition of personal property, and actions of unlawful entry and detainer, provided that the actions of eminent domain and unlawful entry and detainer may be returnable and triable before the judge of said court in vacation. The county court shall have jurisdiction over criminal matters in the county assigned by a judge of the circuit court district in which the county is included.
(2) In the event of the establishment of a county court by an agreement between two (2) or more counties as provided in Section 9-9-3, it shall be lawful for such court sitting in one (1) county to act upon any and all matters of which it has jurisdiction as provided by law arising in the other county under the jurisdiction of said court.
§ 9-9-23. Powers of county judge
The county judge shall have power to issue writs, and to try matters, of habeas corpus on application to him therefor, or when made returnable before him by a superior judge. He shall also have the power to order the issuance of writs of certiorari, supersedeas, attachments, and other remedial writs in all cases pending in, or within the jurisdiction of, his court. He shall have the authority to issue search warrants in his county returnable to his own court or to any court of a justice of the peace within his county in the same manner as is provided by law for the issuance of search warrants by justices of the peace. In all cases pending in, or within the jurisdiction of, his court, he shall have, in term time, and in vacation, the power to order, do or determine to the same extent and in the same manner as a justice of the peace or a circuit judge or a chancellor could do in term time or in vacation in such cases. But he shall not have original power to issue writs of injunction, or other remedial writs in equity or in law except in those cases hereinabove specified as being within his jurisdiction: Provided, however, that when any judge or chancellor authorized to issue such writs of injunction, or any other equitable or legal remedial writs hereinabove reserved, shall so direct in writing the hearing of application therefor may be by him referred to the county judge, in which event the said direction of the superior judge shall vest in the said county judge all authority to take such action on said application as the said superior judge could have taken under the right and the law, had the said application been at all times before the said superior judge. The jurisdiction authorized under the foregoing proviso shall cease upon the denying or granting of the application.