allk12 · Rankings · Largest · Colorado · Boulder County · High schools

The largest public high schools in Boulder County, Colorado

This ranking covers the largest public high schools in Boulder County, Colorado, drawn from 15 qualifying public high schools. Boulder High School leads the list at 1,939, against a median of 1,082 across the ranked schools.

Use the search box to find a specific school within this ranking, sort by any column, or export the full list. Built from NCES and state data for 2024-25.

Schools ranked

Boulder County, Colorado

Top Students

1,939

Median Students

1,082

LARGEST · BOULDER COUNTY, COLORADO

#	School	City	District	Level	Students
1	Boulder High School	BOULDER, CO	Boulder Valley School District No. Re2	High	1,939
2	Fairview High School	BOULDER, CO	Boulder Valley School District No. Re2	High	1,863
3	Centaurus High School	LAFAYETTE, CO	Boulder Valley School District No. Re2	High	1,557
4	Niwot High School	NIWOT, CO	St. Vrain Valley School District No. Re1J	High	1,509
5	Monarch High School	LOUISVILLE, CO	Boulder Valley School District No. Re2	High	1,431
6	Longmont High School	LONGMONT, CO	St. Vrain Valley School District No. Re1J	High	1,268
7	Silver Creek High School	LONGMONT, CO	St. Vrain Valley School District No. Re1J	High	1,208
8	Skyline High School	LONGMONT, CO	St. Vrain Valley School District No. Re1J	High	1,082
9	Lyons Middle/Senior High School	LYONS, CO	St. Vrain Valley School District No. Re1J	High	344
10	New Vista High School	BOULDER, CO	Boulder Valley School District No. Re2	High	327
11	Nederland Middle-Senior High School	NEDERLAND, CO	Boulder Valley School District No. Re2	High	235
12	Arapahoe Ridge High School	BOULDER, CO	Boulder Valley School District No. Re2	High	184
13	Boulder Prep Charter High School	BOULDER, CO	Boulder Valley School District No. Re2	High	114
14	Justice High Charter School	LAFAYETTE, CO	Boulder Valley School District No. Re2	High	108
15	New Meridian High School	LONGMONT, CO	St. Vrain Valley School District No. Re1J	High	95

Page 1 of 1 · top 15 of 15 ranked. NCES + state assessment data, 2024-25.↓ Download full CSV

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DATA NOTICE

allk12 is independent and not affiliated with, endorsed by, or sponsored by NCES, the US Census Bureau, any state education agency or assessment program, or any other government agency. Source data is compiled from public records and provided "as is," without warranty of accuracy or completeness. You rely on it, and any analysis derived from it, at your own risk. See the full disclaimer.