The Indian Constitution currently has 25 parts, a significant increase from the original 22, with three parts added by amendments.
Original Parts (22):
Part I: The Union and its Territories (Articles 1-4)
Part II: Citizenship (Articles 5-11)
Part III: Fundamental Rights (Articles 12-35)
Part IV: Directive Principles of State Policy (Articles 36-51)
Part V: The Union (Articles 52-151)
Part VI: The States (Articles 152-237)
Part VII: The States in Part B of First Schedule (Repealed) (Article 238)
Part VIII: The Union Territories (Articles 239-242)
Part IX: The Panchayats (Articles 243-243O)
Part X: The Scheduled and Tribal Areas (Articles 244-244A)
Part XI: Relations between the Union and the States (Articles 245-263)
Part XII: Finance, Property, Contracts and Suits (Articles 264-300A)
Part XIII: Trade, Commerce and Intercourse within the territory of India (Articles 301-307)
Part XIV: Services under the Union and the States (Articles 308-323)
Part XV: Elections (Articles 324-329A)
Part XVI: Special Provisions relating to certain classes (Articles 330-342)
Part XVII: Official language (Articles 343-351)
Part XVIII: Emergency Provisions (Articles 352-360)
Part XIX: Miscellaneous (Articles 361-367)
Part XX: Amendment of the Constitution (Article 368)
Part XXI: Temporary and Transitional Provisions (Articles 369-392)
Part XXII: Short Title, Commencement, Authoritative Text in Hindi and Repeals (Articles 393-395)
Parts Added by Amendments:
Part IV-A: Fundamental Duties (added by the 42nd Amendment, 1976) (Article 51A)
Part IX-A: The Municipalities (added by the 74th Amendment Act, 1992) (Articles 243P-243ZG)
Part IX-B: The Co-operative Societies (added by the 97th Amendment Act, 2011) (Articles 243ZH-243ZT)
Part XIV-A: Tribunals (added by the 42nd Amendment, 1976) (Articles 323A-323B)