Μοναστηράκι · district
Monastiraki scores 15 out of 100 for property crime — high crime, on a scale where 50 is the average for Greece. It is home to about 2,299 people at 16,579 people per km².
The score is absolute, not a ranking: 50 is the offence rate for Greece as a whole, 100 the safest end of the scale and 0 the least safe, and every doubling of the rate costs the same number of points wherever you are. Regional units are scored from Eurostat's police-recorded offence rates per 100,000 inhabitants. Greece publishes nothing finer, so municipalities and districts share out their region's measured rate by how built-up they are and by documented local reporting — treat those two levels as an estimate, not a count of reported crime.
Monastiraki is the hinge of tourist Athens: the square where Ermou, the flea market, the Ancient Agora and the Acropolis approach all meet, and the interchange between Line 1 and Line 3, which puts Piraeus port and the airport one ride away. It is relentlessly busy from mid-morning to midnight and is the single most crowded piece of ground in the city centre.
The square and Ermou stay full until late, with buskers, rooftop bars and a young drinking crowd on the steps. It is not a place where you feel alone; the risk here is your pockets, not your safety.
Excellent for a short, sight-focused trip: you can walk to nearly everything and reach the airport without changing trains. The trade-off is noise and crowds. Choose Plaka or Thiseio if you want the same walkability with calm.
Reputation against reality. Monastiraki reads as risky online mostly because it is where the largest number of visitors are concentrated, so it generates the largest number of theft reports; per head it is no worse than any other European tourist square. Forum regulars who have stayed there report no problems at all.
Streets and squares: Monastiraki Square · Ermou · Adrianou · Athinas · Monastiraki flea market · Monastiraki metro station