She leads the Democrat by 1482 votes.
There was just a handful of vote total changes in the results announced Friday.
Ellmers has spent the week in Washington getting oriented with the job in anticipation that she would be declared the official winner, and appeared Friday in an official House of Representatives group photo.
Etheridge held a news conference and conceded the race Friday afternoon.
He thanked his supporters, and blamed his defeat on a "combination of the national tide that swept the country, massive amounts of secret corporate cash funding a campaign of distortions, and dirty politics by Washington, DC partisan operatives was just too much to overcome."
"I congratulate Mrs. Ellmers and wish her well as she prepares to serve the people of North Carolina's Second District," Etheridge continued.
The State Board of Elections is expected to certify election results at a meeting next Tuesday.