Population
The 2023 population estimate for the city of Aurora is 399,913*. In the last 50 years, Aurora's population has changed dramatically. We've grown by about 300,000 people during that time period. We are currently the third largest city in Colorado** and 51st largest city in the country***.
Growth

Image Description: Aurora's population growth for the following years (population in parentheses): 2010 (338,774), 2015 (351,200), 2019 (374,154), 2020 (381,057), 2021 (386,502), 2022 (398,018), 2023 (399,913).
Sources: *City of Aurora Planning and Development Services Department
**Annual Estimates of the Resident Population for Incorporated Places in Colorado: April 1,2020 to July 1, 2022
***Annual Estimates of the Resident Population for Incorporated Places of 50,000 or ore, Ranked by July 1, 2022 Population
Counts and Projections

Image Description: Aurora population counts and projections, from 1900-2070. Dates with populations in parentheses: 1900 (202), 1910 (679), 1920 (983), 1930 (2,295), 1940 (3,437), 1950 (11,421), 1960 (48,548), 1970 (74,974), 1980 (158,588), 1990 (222,103), 2000 (276,393), 2010 (325,078), 2020 (384,950), 2030 (449,145), 2040 (506,989), 2050 (568,452), 2060 (637,521), 2070 (714,990).
Source: US Census Bureau, Decennial Census 2010; City of Aurora Planning and Development Services Department, **2020 Decennial Census - U.S Census Bureau *City and Town Population Totals: 2020-2021
Comparison

Image Description: Top 5 Cities in Colorado by Population. Denver (713,252), Colorado Springs (486,248), Aurora (393,537), Fort Collins (169,249), Lakewood (156,120).
Source: US Census Bureau, Annual Estimates of the Resident Population for Incorporated Places in the United States: April 1, 2020 to July 1, 2022 (SUB-IP-EST2021-POP)
Age
Compared to the Metro Area and the State, Aurora is a relatively young community with a high percentage of our population being under the age of 45.More than half of Aurora's total population (64.7%) is under the age of 45 while 11.7% of our population is 65 years and over.

Image Description: Bar graph showing comparisons of population percentages in Aurora, Denver-Aurora-Lakewood (D-A-L) and Colorado. 0-24 years: Aurora (33.7%), D-A-L (30.2%), CO (31.2%). 25-44 years: Aurora (31%), D-A-L (31.8%), CO (29.6%). 45-66 years: Aurora (23.7%), D-A-L (25%), CO (24.9%). 65-84 years: Aurora (10.5%), D-A-L (11.6%), CO (12.8%). 85+ years: Aurora (1.2%), D-A-L (1.4%), CO (1.5%).
Source: U.S Census Bureau 2017-2021 ACS 5-Year Estimates