School District · Montana
Custer County High School District
📍 Ismay, MT · Custer County · NCES LEAID 3007930
District Contact & InformationSource: NCES CCD 2024–25
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District Mailing Address
1604 Main Street, Miles City, MT 59301
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NCES District ID (LEAID)
3007930
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District Type
Public School District
Zip Codes Served by Custer County High School District4 zip codes
Frequently Asked Questions
What zip codes are in Custer County High School District?▼
Custer County High School District serves 4 zip codes: 59301, 59336, 59338, 59345. 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 Custer County High School District rated?▼
Custer County High School District has an overall rating of 4 out of 10 (Below Average), based on the share of students proficient in reading and math on state assessments (NCES EDFacts). That places it in the 39th percentile among Montana school districts. Ratings are percentile-ranked within Montana only and are not comparable across states.
How many students attend Custer County High School District?▼
The NCES Common Core of Data directory reports enrollment of 495 students across 1 school for Custer County High School District.
What grades does Custer County High School District serve?▼
Custer County High School District is listed in the NCES directory as serving grades 9th – 12th.
How do I contact Custer County High School District?▼
You can reach Custer County High School District by phone at (406)232-3840 or by mail at 1604 Main Street, Miles City, MT 59301. Contact details come from the NCES district directory and are the best way to confirm which school your address is assigned to.
About Custer County High School District
Custer County High School District is a public school district serving 4 zip codes in Montana, primarily in Custer County. It carries an overall rating of 4/10 (Below Average), the 39th percentile among Montana 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 Montana 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 (406)232-3840 before making a housing decision.