Cities in Colorado by median age

Greenwood Village, CO had the highest median age of 54 cities in 2023, at 46.2 years. Boulder, CO had the lowest, at 28.8 years. The median was 37.1 years and the figure for Colorado was 37.5 years. Source: the U.S. Census Bureau.

Highest46.2Greenwood Village, CO

Lowest28.8Boulder, CO

Median37.154 cities

Colorado37.5History

All cities, 2023

years. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more). Retrieved 2026-10-12.

Full ranking

Rank	Cities	2023 years	Change on 2022
1	Greenwood Village, CO	46.2	+0.6
2	Cañon City, CO	46	+1.2
3	Montrose, CO	45.9	-2.8
4	Castle Pines, CO	43.5	-1.1
5	Steamboat Springs, CO	43	+1.7
6	Wheat Ridge, CO	42.1	+0.2
7	Centennial, CO	41.8	+0.2
7	Louisville, CO	41.8	+0.1
9	Lone Tree, CO	41.1	0
10	Fruita, CO	40.8	+0.4
10	Loveland, CO	40.8	+0.4
12	Windsor, CO	40.3	-1
13	Arvada, CO	40.2	0
13	Littleton, CO	40.2	+0.2
15	Longmont, CO	40.1	+0.4
16	Grand Junction, CO	40	+0.1
17	Lafayette, CO	39.4	+0.7
18	Berthoud, CO	39	+0.5
19	Broomfield, CO	38.8	+0.2
20	Pueblo, CO	38.1	+0.3
21	Lakewood, CO	38	-0.1
21	Monument, CO	38	-0.3
21	Sterling, CO	38	+0.3
24	Erie, CO	37.6	+0.2
25	Westminster, CO	37.5	+0.1
26	Durango, CO	37.2	+0.6
27	Frederick, CO	37.1	+0.3
28	Englewood, CO	37	+0.9
29	Superior, CO	36.5	-0.4
30	Parker, CO	36.2	+0.5
31	Timnath, CO	36	-0.2
32	Castle Rock, CO	35.8	0
33	Glenwood Springs, CO	35.7	-1
34	Colorado Springs, CO	35.6	+0.5
34	Firestone, CO	35.6	0
36	Denver, CO	35.2	+0.3
37	Aurora, CO	35.1	0
37	Golden, CO	35.1	-0.1
39	Northglenn, CO	34.9	+0.5
40	Brighton, CO	34.4	-0.1
41	Fort Lupton, CO	34.3	-1.6
41	Thornton, CO	34.3	+0.6
43	Johnstown, CO	34	-1.1
44	Commerce City, CO	33.9	+0.4
45	Wellington, CO	33.4	+1
46	Severance, CO	33.2	-0.1
47	Fort Morgan, CO	32.5	-0.3
47	Greeley, CO	32.5	+0.6
49	Federal Heights, CO	32.3	+0.6
49	Rifle, CO	32.3	+0.2
51	Fountain, CO	31.1	+0.7
52	Fort Collins, CO	30.6	+0.5
53	Evans, CO	29.5	+0.1
54	Boulder, CO	28.8	+0.3

Other periods

2024
2023
2022
2021

About this ranking

Age that divides the resident population into two halves of equal size. Spain and the EU: on 1 January. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span. Canada: on 1 July, Statistics Canada population estimates.

Every value in the ranking comes from the same publisher and the same period, so the cities are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more). https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b01002.dat. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more) (Cities in Colorado by median age, 2023) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b01002.dat

MLA 9

American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more), Cities in Colorado by median age, 2023. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b01002.dat. Invokely, https://invokely.ai/rankings/median-age/colorado-cities?period=2023. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more). Cities in Colorado by median age, 2023. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b01002.dat. Also distributed by Invokely, https://invokely.ai/rankings/median-age/colorado-cities?period=2023.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more), Cities in Colorado by median age, 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b01002.dat, via Invokely: https://invokely.ai/rankings/median-age/colorado-cities?period=2023 (Accessed: 12 October 2026).

BibTeX

@misc{census_cities_in_colorado_by_2023,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more): Cities in Colorado by median age, 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b01002.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/median-age/colorado-cities?period=2023. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more). https://www2.census.gov/programs-surveys/acs/summary\_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b01002.dat. Retrieved 2026-10-12.},
}

RIS

TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more): Cities in Colorado by median age, 2023
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b01002.dat
L2  - https://invokely.ai/rankings/median-age/colorado-cities?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-age/colorado-cities?period=2023.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more). https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b01002.dat. Retrieved 2026-10-12.
ER  -

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Questions

Which city has the highest median age?

Greenwood Village, CO, with 46.2 years in 2023, according to the U.S. Census Bureau.

Which city has the lowest median age?

Boulder, CO, with 28.8 years in 2023.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more). Retrieved 2026-10-12.