After graduation, she continued her work as a reporter, anchor and video journalist for WWAY in Wilmington, North Carolina in 2005.

In January 2007 Kooiman moved to Toledo, Ohio, and began working for the local NBC affiliate, WNWO, as morning anchor and reporter.

She was also out in the elements during major weather events like Super Storm Sandy, tornadoes in Moore, Oklahoma, and the 2016 U.S. blizzard.

Her franchise, "Roadtrip with Anna Kooiman" takes viewers around the United States, checking off bucket list items.

In April 2024, Kooiman moved back to New York City and began her stint as a weekend anchor at NewsNation.

Anna's husband appeared in 2016 on FOX & Friends for a cooking segment, which received social media attention for using the signature Aussie condiment, Vegemite.

[12] In April 2014, Kooiman completed the Boston Marathon while reporting on the race and conducting interviews for Fox News.

In November 2014, Kooiman raised over $55,000 on Crowdrise and in direct donations to Folds of Honor while running the New York City Marathon[14] in 3:54:15 with Major Dan Rooney.

Back in college, Kooiman first got involved with the charity when she served as the philanthropy chair of her sorority, Alpha Delta Pi while at University of North Carolina at Wilmington.