By Brian Schiedel

PHOENIX, Ari. -- The Internal Revenue Service says it has more than 1,300 refund checks worth $1,443,545 for Oregon taxpayers that were returned by the US Postal Service due to mailing errors.

All a taxpayer has to do is update his or her address once. The IRS will then send out all checks due. Undeliverable refund checks average $1,104 per Oregonian this year, compared to $930 last year. Some taxpayers are due more than one check.

Across the country, nearly 108,000 refund checks worth a combined $123.5 million are waiting for taxpayers to claim them.

"We are eager to get this money into the hands of taxpayers, so don't delay if you think you are missing a refund," said IRS Commissioner Doug Shulman. "The sooner you update your address information, the quicker you can get your refund."

If you feel you're owed a refund check, you can get a status update on the "Where's My Refund?" section of the IRS website here, or by calling 1-800-829-1954.