University Hospital Limerick was the most overcrowded in the country.
More than 10,000 patients were left on trolleys in Irish hospitals last month.
207 of those were in midlands hospitals - 160 in Mullingar, 43 in Portlaoise and just four in Tullamore.
The figures in Midlands Regional Hospital Tullamore are a massive during the same period last year, when 285 patients were on trolleys.
The Irish Nurses and Midwives Organisation says University Hospital Limerick was the most overcrowded, with 1,561 people left without a bed.
Cork and Galway university hospitals were the next worst.