School District · Kansas
Lyndon Unified School District 421
📍 Lyndon, KS · Osage County · NCES LEAID 2009000
District Contact & InformationSource: NCES CCD 2024–25
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Grades Served
Pre-K – 12th
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District Mailing Address
PO Box 488, Lyndon, KS 66451
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NCES District ID (LEAID)
2009000
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District Type
Public School District
Zip Codes Served by Lyndon Unified School District 4212 zip codes
Frequently Asked Questions
What zip codes are in Lyndon Unified School District 421?▼
Lyndon Unified School District 421 serves 2 zip codes: 66451, 66543. 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 Lyndon Unified School District 421 rated?▼
Lyndon Unified School District 421 has an overall rating of 6 out of 10 (Average), based on the share of students proficient in reading and math on state assessments (NCES EDFacts). That places it in the 53rd percentile among Kansas school districts. Ratings are percentile-ranked within Kansas only and are not comparable across states.
How many students attend Lyndon Unified School District 421?▼
The NCES Common Core of Data directory reports enrollment of 436 students across 2 schools for Lyndon Unified School District 421.
What grades does Lyndon Unified School District 421 serve?▼
Lyndon Unified School District 421 is listed in the NCES directory as serving grades Pre-K – 12th.
How do I contact Lyndon Unified School District 421?▼
You can reach Lyndon Unified School District 421 by phone at (785)828-4413 or by mail at PO Box 488, Lyndon, KS 66451. Contact details come from the NCES district directory and are the best way to confirm which school your address is assigned to.
About Lyndon Unified School District 421
Lyndon Unified School District 421 is a public school district serving 2 zip codes in Kansas, primarily in Osage County. It carries an overall rating of 6/10 (Average), the 53rd percentile among Kansas 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 Kansas 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 (785)828-4413 before making a housing decision.