Colorado Growth Slows as Population Gains Concentrate in Fewer Counties

By Mark Samuelson | The Denver Gazette

Population growth in Colorado, which had helped drive the region’s burgeoning economy over recent years, has slowed markedly. In metro Denver, the growth areas are concentrated in only a handful of counties, according to a new report.

From 2024 to 2025 the state added just 33,151 residents, marking one of the lowest annual growth cycles it had posted over the past decade, according to a study issued last week by the Greenwood Village-based Common Sense Institute.

That recent total shows Colorado’s annual population growth having slipped by some 60% from 2015, a summary of the study concluded. During the span of 2015 to 2016, Colorado saw a population increase of 83,036, the study said.

Meanwhile, although recent data show the state is still gaining residents, those tend to be concentrated in a small number of counties, according to the report.

Meanwhile, some other counties that had reflected growth in previous years are now posting declines, the study said.

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