169,600 people were on the Live Register in July, according to seasonally adjusted figures from the Central Statistics Office.
This was a rise of 0.7%, or 1,100 people, compared to the previous month.
The unadjusted total stood at 185,627 people, of which 52% were male and 73% were Irish.
The 25-34 years age group made up the largest number of those on the Live Register at 44,446 people or just under 24% of the total.
Meanwhile, 12.3% of all claimants, or 22,743 people, were under the age of 25.
Dublin recorded the largest percentage increase in the number of people on the Live Register in the 12 months to July, up 5.6%. Kildare saw the second highest increase, up 2.8%.
The largest decreases were in Kerry, down 13.7% and Clare, down 9.5%.
The Live Register is not designed to measure unemployment as it includes part-time workers as well as seasonal and casual workers who are entitled to Jobseeker's Benefit or Jobseeker's Allowance.
Figures published yesterday from the CSO showed that the unemployment rate increased slightly in July when compared to the previous month.
The seasonally adjusted rate was 4.9%, up from 4.6% in June.
