Aurora (/əˈroʊrə/, /əˈrɔːrə/) is a home rule municipality located in Arapahoe, Adams, and Douglas counties, Colorado, United States.[1] The city’s population was 386,261 at the 2020 United States Census with 336,035 residing in Arapahoe County, 47,720 residing in Adams County, and 2,506 residing in Douglas County.[4] Aurora is the third most populous city in the State of Colorado and the 51st most populous city in the United States. Aurora is a principal city of the Denver–Aurora–Lakewood Metropolitan Statistical Area (MSA) and a major city of the Front Range Urban Corridor.

– Updated 2022