IRS officials say the checks average $1,517.
The agency says almost 112,000 people nationwide had undelivered refunds, including the 1,013 in Connecticut. The national average was $1,471.
Gregg Semanick, a spokesman for the IRS in Connecticut, says some taxpayers are due more than one check. They can be reissued when the taxpayers provide their current addresses.
People seeking the status of their refund can go to www.irs.gov and click on "Where's My Refund?" They can also call 1-800-829-1954.