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Weld County Surpasses Larimer in Population Growth
New Census estimates show Weld County's population has grown 15% since 2020, outpacing Larimer County's 5.1% increase.
Mar. 27, 2026 at 2:48am
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According to new U.S. Census Bureau estimates, Weld County has surpassed Larimer County in population, marking a milestone in the rapid growth that continues to reshape northern Colorado. Weld County's population grew by about 8,681 residents from July 2024 to July 2025, while Larimer County added around 2,718 residents over the same period. Since the 2020 census, Weld's population has grown 15%, compared to 5.1% for Larimer.
Why it matters
The population shift between Weld and Larimer counties reflects the broader growth trends in northern Colorado, with Weld's comparatively lower housing costs, large land base, and proximity to major job centers making it an attractive destination for families and workers priced out of neighboring counties. This growth is already straining regional infrastructure and will require coordinated efforts from local leaders to manage development and plan for the future.
The details
Weld County's population is now estimated at 378,426 residents as of July 1, 2025, up from 369,745 a year earlier. Larimer County was estimated at 377,292 residents, up from 374,574 in 2024. Weld remains a younger county, with 25% of residents under age 18 compared to 17.6% in Larimer. Weld also has lower median housing values and rents, factors that may continue to draw new residents. However, Larimer still has higher rates of bachelor's degree attainment and higher retail sales totals, reflecting differences in economic structure between the two counties.
- The new Census estimates are as of July 1, 2025.
- Since the 2020 census, Weld's population has grown 15%, compared with 5.1% for Larimer.
The players
Weld County
A county in northern Colorado that has become one of the fastest-growing large counties in the state, driven by its comparatively lower housing costs, large land base, and proximity to major job centers.
Larimer County
A neighboring county in northern Colorado that has also experienced significant growth, but at a slower pace than Weld County in recent years. Larimer has higher rates of bachelor's degree attainment and higher retail sales totals than Weld.
What’s next
Regional leaders will likely need to focus on coordinated efforts to manage the growth and development in Weld and Larimer counties, including addressing infrastructure needs, housing affordability, and planning for the future.
The takeaway
The population shift between Weld and Larimer counties highlights the ongoing transformation of northern Colorado, with Weld's rapid growth outpacing its neighbor. This growth will require careful planning and collaboration from local officials to ensure the region can accommodate the influx of new residents while preserving the unique characteristics of each county.
