Phoenix has become the largest U.S. city to successfully challenge its population count from the 2020 census after claiming that dozens of group homes, jails and drug and alcohol treatment centers were overlooked during the nation’s head count.

The U.S. Census Bureau told Phoenix Mayor Kate Gallego last week that the statistical agency had approved its submission claiming that 3,550 people in 192 group quarter facilities were missed during the once-a-decade census