Moving to Longmont: Pros, Cons & What to Know
Moving to Longmont means moving to a real, independent Boulder County city -- not a Boulder neighborhood or a discount satellite -- with its own 1871 founding history as the Chicago-Colorado Colony. City of Longmont's own official 2025 Population Estimate puts the population at 104,178 as of the end of 2025, though third-party aggregators cite figures as low as 100,211 for 2026 -- a real, disclosed spread rather than one clean number.
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Learn moreConfirm which of Longmont's population figures you're looking at
Because sources disagree by roughly 4,000 people -- the City's own 2025 estimate (104,178) versus World Population Review's 100,211, Population.us's ~103,266, and Cubit Planning's 101,495 projection for 2026 -- treat any single population figure as directional rather than exact, and prefer the City of Longmont's own official estimate when precision matters.
St. Vrain Valley School District serves nearly all of Longmont, but confirm the specific school
St. Vrain Valley School District, headquartered in Longmont, ranks #14 among Colorado's school districts for 2026 (#5 in the Denver metro) per Niche, with 31,607 students district-wide. Individual schools within the district vary more widely (from #44 to #264 among Colorado elementary schools, for instance), so a specific address's zoned school should be confirmed directly rather than assumed from the district-wide ranking. See schools for the fuller breakdown.
Longmont offers zero-fare local buses plus real regional bus connections
Longmont offers completely zero-fare travel on all RTD local bus routes within city limits (routes 323, 324, 326, and 327), plus FLEX regional bus service connecting to Loveland, Berthoud, and Fort Collins via US-287, and RTD's BOLT and LD routes connecting to Boulder and Denver respectively -- a real, if car-supplementing rather than car-replacing, set of non-driving options. See traffic-transportation for the fuller picture.
Key takeaways
- The City of Longmont's own official 2025 Population Estimate cites 104,178 residents as of the end of 2025; third-party aggregators cite figures as low as 100,211 for 2026 -- a real, disclosed roughly 4,000-person spread.
- St. Vrain Valley School District (headquartered in Longmont) ranks #14 in Colorado and #5 in the Denver metro per Niche 2026 -- a genuinely strong district-wide ranking, though individual schools vary; confirm the specific zoned school for an address.
- Longmont offers zero-fare local RTD bus service within city limits plus FLEX regional buses to Loveland/Fort Collins and RTD's BOLT/LD routes to Boulder/Denver.
- Longmont is a real, separate Boulder County city with its own 1871 founding history (the Chicago-Colorado Colony) -- not a Boulder neighborhood or satellite.
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