The pop-up hubs will operate for seven days in the Dublin locations and for five in all the others, except for the centre in Ballinasloe that will only be running for three days.
The tests are free for anyone over the age of 16 and anyone living within 5km of a centre is being encouraged to attend.
As of the latest Covid-19 figures, Co Offaly remains the county with the highest infection rate in the country. It is followed by Donegal and then Dublin.
In Tullamore, the 14-day incidence rate stands at 823 per 100,000 population. However, as it has a walk-in test centre for people without symptoms more people are being tested for Covid-19 than in other parts of the country.
Covid-19: Five walk-in testing centres open to help identify asymptomatic cases
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Peace of mind : Walk-in test centres proving popular
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