Colorado's population growth has hit a staggering low, reminiscent of the oil bust in the late 1980s, but what’s causing this slowdown now, and what does it mean for the state’s future? Last year, Colorado’s population increased by just 24,059 people—the smallest gain since 1990, according to the U.S. Census Bureau. Despite this modest rise, the state’s population surpassed 6 million for the first time, a milestone overshadowed by the broader trend. But here's where it gets controversial: while the state’s economy isn’t in crisis, high housing costs and sluggish job growth seem to be driving residents away. Even more striking, immigration—historically a key driver of population growth—weakened significantly last year, raising questions about the state’s long-term demographic health.
Thirty-five years ago, Colorado faced a severe recession due to plummeting oil prices, leading to a net outflow of residents. Today, the economy is stable but unremarkable, leaving many to wonder: is this slowdown a temporary blip or the start of a deeper shift? And this is the part most people miss: the decline in immigration isn’t just a Colorado problem—it’s a national trend. Former President Donald Trump’s immigration policies slashed the U.S. population growth rate from 1% in 2024 to 0.5% in 2025, with Colorado’s growth rate plummeting from 1.29% to 0.4%, a staggering two-thirds drop. This raises a bold question: Are restrictive immigration policies reshaping America’s demographic future, and at what cost?
The Census Bureau’s annual population estimates, measured from July 1 to June 30, reveal that even partial implementation of strict immigration policies can have dramatic effects. Net immigration dropped from 2.8 million to 1.3 million in just one year, and if this trend continues, the U.S. could see as few as 321,000 new immigrants by mid-2026. In Colorado, natural population increases (births minus deaths) accounted for 20,608 of the state’s growth, while net migration contributed a mere 3,256 residents. International immigration added 15,356 people, but this was offset by a net loss of 12,100 residents moving to other states.
Nationally, the population reached nearly 342 million in 2025, up from 340 million in 2024. Colorado’s population grew from 5,988,502 to 6,012,561, maintaining its rank as the 20th most populous state. However, other states experienced even sharper declines. California, once a population powerhouse, lost 9,500 residents in 2025 after gaining 232,000 in 2024, primarily due to reduced immigration. Hawaii, New Mexico, Vermont, and West Virginia also saw population losses. New York’s growth was nearly stagnant, adding just 1,008 people, while Florida’s domestic migration dropped by two-thirds, though it still managed significant overall growth alongside Texas and North Carolina.
South Carolina, Idaho, and North Carolina led the nation with population growth rates between 1.3% and 1.5%. Yet, Brookings demographer William Frey warns that even these states may see slower growth in the coming years. Colorado’s current growth rate is the lowest since 1989, and this decade is on track to be the slowest since the 1980s. Since 2020, the state has gained 17,729 residents from other U.S. states but has seen a surge of 130,218 international immigrants. Historically, net migration has been 80% domestic and 20% international, but this balance has flipped dramatically.
What’s driving domestic migration to turn negative in the absence of a recession? The State Demography Office notes that many international arrivals in Colorado between 2022 and 2025 came on humanitarian grounds and may have moved elsewhere, skewing domestic migration numbers. The Census Bureau’s improved tracking of refugees and protected status immigrants has also played a role. Is this a temporary anomaly, or are we witnessing a permanent shift in migration patterns?
Adding to the complexity, a United Van Lines survey revealed that Colorado became a 'strong outbound' state in 2025 for the first time since 1990, suggesting that not just new residents but also established, wealthier households are leaving. This trend could have far-reaching implications, from easing the state’s housing shortage to lowering rents and home prices—Denver’s apartment rents have already dropped to 2022 levels. However, slower growth could strain government budgets, as population growth and inflation determine annual spending increases.
Economist Gary Horvath points out that slower population and job growth often go hand in hand. While typically a lack of jobs drives population decline, he suggests the opposite might be true today. 'If we can’t fill jobs due to labor shortages, the market will struggle—not from a lack of demand, but from a lack of supply,' he said. This raises another provocative question: Are we underestimating the impact of labor shortages on economic growth?
As Colorado navigates this demographic shift, one thing is clear: the state’s future hinges on addressing housing affordability, job creation, and immigration policies. What do you think? Is Colorado’s population slowdown a cause for concern, or an opportunity for recalibration? Share your thoughts in the comments—let’s spark a conversation about the future of the Centennial State.
