📊 Data: NCES CCD 2024–2025·🔄 Updated: May 2026·Editorial standards
📍 Denver, CO · Jefferson County

Jefferson County School District R-1

Grades Pre-K – 12th · 75,327 students · 162 schools · 26 zip codes

9
out of 10 Rating Excellent
State reading & math proficiency · 85th percentile among Colorado districts. Ranked within Colorado only — not comparable across states.
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School District · Colorado
Jefferson County School District R-1
📍 Denver, CO · Jefferson County · NCES LEAID 0804800
9/10
Rating
75,327
Students
162
Schools
Pre-K – 12th
Grade Span
26
Zip Codes
District Contact & InformationSource: NCES CCD 2024–25
📚
Grades Served
Pre-K – 12th
📞
District Phone
(303)982-6500
📍
District Mailing Address
P O BOX 4001, GOLDEN, CO 80401
🎓
Enrollment
75,327 students
🏫
Schools
162
🏙
County
Jefferson County, CO
🌐
NCES District ID (LEAID)
0804800
🏛
District Type
Public School District
Zip Codes Served by Jefferson County School District R-126 zip codes
Zip CodeCityCountyState
80002ArvadaJefferson CountyCO
80003ArvadaJefferson CountyCO
80004ArvadaJefferson CountyCO
80005ArvadaJefferson CountyCO
80007ArvadaJefferson CountyCO
80021BroomfieldJefferson CountyCO
80033Wheat RidgeJefferson CountyCO
80127LittletonJefferson CountyCO
80128LittletonJefferson CountyCO
80214DenverJefferson CountyCO
80215DenverJefferson CountyCO
80226DenverJefferson CountyCO
80227DenverJefferson CountyCO
80228DenverJefferson CountyCO
80232DenverJefferson CountyCO
80235DenverJefferson CountyCO
80401GoldenJefferson CountyCO
80403GoldenJefferson CountyCO
80419GoldenJefferson CountyCO
80425Buffalo CreekJefferson CountyCO
80433ConiferJefferson CountyCO
80453IdledaleJefferson CountyCO
80454Indian HillsJefferson CountyCO
80457KittredgeJefferson CountyCO
80465MorrisonJefferson CountyCO
80470PineJefferson CountyCO
Frequently Asked Questions
What zip codes are in Jefferson County School District R-1?▼
Jefferson County School District R-1 serves 26 zip codes: 80002, 80003, 80004, 80005, 80007, 80021, 80033, 80127, 80128, 80214, 80215, 80226, 80227, 80228, 80232, 80235, 80401, 80403, 80419, 80425, 80433, 80453, 80454, 80457, 80465, and 1 more. Zip codes and district boundaries do not line up exactly, so confirm your exact address with the district office before you rely on an assignment.
How is Jefferson County School District R-1 rated?▼
Jefferson County School District R-1 has an overall rating of 9 out of 10 (Excellent), based on the share of students proficient in reading and math on state assessments (NCES EDFacts). That places it in the 85th percentile among Colorado school districts. Ratings are percentile-ranked within Colorado only and are not comparable across states.
How many students attend Jefferson County School District R-1?▼
The NCES Common Core of Data directory reports enrollment of 75,327 students across 162 schools for Jefferson County School District R-1.
What grades does Jefferson County School District R-1 serve?▼
Jefferson County School District R-1 is listed in the NCES directory as serving grades Pre-K – 12th.
How do I contact Jefferson County School District R-1?▼
You can reach Jefferson County School District R-1 by phone at (303)982-6500 or by mail at P O BOX 4001, GOLDEN, CO 80401. Contact details come from the NCES district directory and are the best way to confirm which school your address is assigned to.

About Jefferson County School District R-1

Jefferson County School District R-1 is a public school district serving 26 zip codes in Colorado, primarily in Jefferson County. It carries an overall rating of 9/10 (Excellent), the 85th percentile among Colorado districts. That rating reflects the share of students proficient in reading and math on state assessments (NCES EDFacts, 2021–22 for most districts with a 2017–18 fallback for the rest) and is ranked only against other Colorado districts — scores are not comparable between states. Directory details on this page come from the NCES Common Core of Data, 2024–25.

District boundaries are address-specific and do not follow zip code lines exactly — a single zip code can be split between two or more districts. Use the zip codes listed above as a starting point, then confirm your assignment with the district office at (303)982-6500 before making a housing decision.

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