|Administrative region||North Aegean|
|• Municipal unit||48.3 km2 (18.6 sq mi)|
|• Municipal unit||3,956|
|• Municipal unit density||82/km2 (210/sq mi)|
|Time zone||EET (UTC+2)|
|• Summer (DST)||EEST (UTC+3)|
Ionia (Greek: Ιωνία) is a former municipality on the island of Chios, North Aegean, Greece. Since the 2011 local government reform it is part of the municipality Chios, of which it is a municipal unit. It is located in the southeastern part of the island, and has a land area of 48.272 km². Its population was 3,956 at the 2011 census. The seat of the municipality was in Kallimasia (pop. 958). Other large towns are Nenita (903), Tholopotámi (647) and Katarráktis (408).
- Joachim IV, Patriarch of Constantinople
- "Απογραφή Πληθυσμού - Κατοικιών 2011. ΜΟΝΙΜΟΣ Πληθυσμός" (in Greek). Hellenic Statistical Authority.
- Kallikratis law Greece Ministry of Interior (in Greek)
- "Population & housing census 2001 (incl. area and average elevation)" (PDF) (in Greek). National Statistical Service of Greece. Archived from the original (PDF) on 2015-09-21.
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