The barracks will be used to house refugees for around a year, according to the Department of Integration.
Around 300 people attended a protest against housing refugees at a former midlands army barracks.
The protesters marched from Columb Barracks and through Mullingar town shortly before 7pm.
Gardaí were also present at the protest, and say it passed off without incident, and no arrests were made.
Columb Barracks Restoration and Regeneration Committee says the protest highlights the need for more consultation with the community of Mullingar.
The Department of Integration say 15 tents, which would hold up to 120 single men, are to be installed by the end of this month.
After eight weeks, they will then be replaced by Portakabins - which will cater for families only and can accommodate up to 200 people.
The site is expected to be used for around a year.
Read More: Community Engagement Over Plan For Former Midlands Barracks Must Improve
Government Considers Compulsory Helmet Use For E-Scooter Riders
Westmeath Family Blogger Backs 'Mental Health' Days
Enterprise Minister Confirms He Was Overpaid
Offaly Driving Instructor Calls Out Lack Of Clear Road Markings
Occupied Territories Bill Needs Enactment - Brian Stanley
Laois Gaelscoil To Reopen In Time For 20th Anniversary
Enoch Burke To Be Re-Arrested For Repeated Trespass
Laois Brothers Sentenced Over Rape And Assault Charges
Laois TD Questions EirGrid On Energy Capacity
Westmeath Library Re-Opening Pushed Back
Government Action Urged On Prison Conditions
Offaly GAA Club Submit New Pitch Plans
Gardaí Attend Scenes Of Midlands Crashes
Midlands Counties See Dramatic Fall In Housing Commencements
Westmeath Councillor Calls For Baby Loss Certificate Scheme
Commemorative Walk For Ashling Murphy To Take Place In New York
Sentencing Adjourned For Offaly Father Whose Son Died In Arson Attack
Gardaí Seize Heroin, Crack Cocaine And Cash In Offaly Town
Opposition TD Calls For Minister Overpayment Ultimatum
Investigation Underway After Suspected Arson At Westmeath Home