Nationally, NZME and partners continue to grow and now have more than two million listeners.
NZME's chief commercial officer, Laura Maxwell, said NZME's radio was "on a roll" with 54,500 new listeners, now reaching 60 per cent of all radio listeners.
In addition, iHeartRadio registered users have increased by 33 per cent year on year to more than 631,000.
"This is an overall market share increase of 1.8 percentage points for NZME and partners whilst Mediaworks went backwards for the second survey in a row, this time by 0.7 percentage points. I'm particularly excited that alongside our radio partners, we are better reflecting the new diversity of New Zealand's population."
This result means NZME continues to close the overall listening gap, with its share of listeners up 3.7 percentage points across the first two surveys of this year.
NZME managing editor Shayne Currie said Newstalk ZB continued its dominance having been number one since 2003.
Newstalk ZB has grown its share in Auckland to 11 per cent and nationally to 10.3 per cent.
"This means we've again retained the number one crown, while the Mike Hosking Breakfast is the biggest breakfast show in the country," said Mr Currie.
"Marcus Lush has also had a phenomenal result, being number one in all markets across the country."
