Kapodistrias reform (Greek: Σχέδιο Καποδίστριας, "Kapodistrias Plan") is the common name of law 2539 of Greece, which reorganised the country's administrative divisions. The law, named after 19th-century Greek statesman Ioannis Kapodistrias, passed the Hellenic Parliament in 1997, and was implemented in 1998.^[1] The administrative system was changed again at the 2010 Kallikratis reform.^[2]

Before and after the Kapodistrias reform, the difference between municipalities (δήμοι) and communities (κοινότητες) was merely a matter of size. Municipalities were larger and had a more urban character than communities, which were as small as a single village. The reform reduced the number of municipalities and communities sharply: from 5775 (441 municipalities and 5382 communities) to 1033 (900 municipalities and 133 communities).^[3]

Municipalities and communities varied in population from 745,514 (Athens) to 28 (Gramos, in Kastoria Prefecture) with an average of 10,603.5 and a median of only 4,661.5 (2001 census "real" population, including Agion Oros as one of the municipalities). The following table illustrates the range:

Municipalities and communities varied in land area from 873.552 km² (Kato Nevrokopi in Drama Prefecture) to 0.800 km² (Nea Chalkidona in Athens Prefecture), with an average of 127.618 km² and a median of 105.669 km².

• List of municipalities and communities in Greece (1997–2010)
• Administrative divisions of Greece