Youngest Cities in Colorado
Cities ranked by lowest median age of residents. 50 cities ranked from official U.S. government data.
What this Colorado ranking shows
According to the U.S. Census Bureau's American Community Survey (ACS) 5-year estimates, the CDC PLACES population-level health analysis, and the CMS Hospital Compare quality data, Areazine ranks U.S. cities across more than 19,000 incorporated places, census-designated places, and consolidated city-county governments. State-level city rankings combine these federal datasets to produce intra-state comparisons across demographics, economics, health outcomes, and hospital quality.
Aurora leads 50 Colorado cities at 34.8 yrs, while Lakewood sits at the bottom with 40.5 yrs — a total spread of 5.7 yrs on median age. The top 5 occupy 0% of that range, indicating a tightly-clustered top tier — the leading cities are nearly indistinguishable on this metric.
The median Colorado city in this list sits at 36.8 yrs, 2.0 yrs behind Aurora. See our methodology for ranking construction, data vintage, refresh cadence, and the federal upstream tables we join, and triangulate via the 8 other Colorado rankings below — cities that lead on multiple lenses are the most robust signals.
Top 5 — Youngest Cities
| Rank | City | median age | Population |
|---|---|---|---|
| #1 | Aurora | 34.8 yrs | 359K |
| #2 | Thornton | 34.8 yrs | 133K |
| #3 | Westminster | 34.8 yrs | 116K |
| #4 | Commerce City | 34.8 yrs | 54K |
| #5 | Northglenn | 34.8 yrs | 39K |
Youngest Cities 50
More Colorado Rankings 8
Reading this Colorado ranking responsibly
Single-metric rankings are useful precisely because they are honest about what they measure. A "highest income" ranking does not tell you that the top-ranked city is the best place to live in Colorado; it tells you that, among cities of population ten thousand and above in Colorado that have a published median household income field in the most recent American Community Survey five-year estimates, this city has the highest such value. That precise definition matters, because composite "best places" lists from real-estate marketing sites and lifestyle magazines often combine income with subjective weights on schools, walkability, and amenities, producing a score whose components are not disclosed and whose ordering is not reproducible. Areazine's editorial commitment is to keep the underlying field, source, and vintage visible so the reader can audit any rank in this list against the canonical federal record.
Cross-checking against other rankings is a useful sanity test. A city that appears in the top ten on three or more different rankings — for example, highest income, most educated, and lowest poverty — is showing a robust signal across multiple independent dimensions. A city that appears in the top ten on only one ranking and middling on the others is showing a narrower signal, often driven by a single statistical artifact (a small population pulling the per-capita measure, a recent acquisition spike inflating median home value, an outlier survey year). The other nine Colorado rankings linked above provide that cross-check at zero extra effort.
Data Sources
Population and economic data from the Census Bureau American Community Survey (2022 5-year estimates). Health data from the CDC PLACES (2023). Ranking computations use U.S. Census Bureau reference geographies. Crime statistics, where referenced, originate from the FBI Uniform Crime Reporting program (also accessible via the Crime Data Explorer).
Read our methodology — how this data is sourced, computed, and verified.