Drug use, sex offences and theft were among the complaints made about Gardaí last year.
According to Freedom of Information files, 2,200 complaints lodged in 2021, a 12% rise on 2020.
Of all the allegations nationally, seven related to sex offences and six were about the misuse of drugs.
There were 50 in relation to criminal damage and 27 about theft or fraud.
However, only 17 breaches of discipline were identified in last year's complaints.
Out of all of last year's complaints, 341 were in relation to Covid matters, up from 295 the previous year.
35% of the allegations - or just over 1,300 - were in Dublin, with 346 in Cork, 212 in Louth, and 122 in Galway.