President Kennedy's grandson, Jack Schlossberg, announced this year's recipients as Hidalgo and Data for Black Lives founder Yeshimabeit Milner.
The awards were created to honor Americans under age 40 who are changing their communities and the country with their commitment to public service.
Schlossberg said Hidalgo, a Democrat who serves as Harris County's chief administrative official, "boldly" led throughout the pandemic by "implementing important health measures before they were popular, or even acceptable."
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Kennedy's grandson said Milner's "lifelong commitment to social change is bringing political organizing into the 21st century, using technology and data to fight racial bias and discrimination."