School District · Ohio
Mason City School District
📍 Mason, OH · Warren County · NCES LEAID 3905045
District Contact & Information
Source: NCES CCD 2024–25
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Grades Served
Pre-K – 12th
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District Mailing Address
211 N East St, Mason, OH 45040
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Enrollment
10,179 students
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NCES District ID (LEAID)
3905045
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District Type
Public School District
Schools in Mason City School District
4 schools listedOhio School District Income Tax
No district income taxMason City School District is not among the 214 Ohio school districts that levy a school district income tax for 2026, so residents do not owe school district income tax to this district. You may still need your district’s number when filing an Ohio return.
Source: Ohio Department of Taxation, school district income tax rates effective January 1, 2026 (published December 30, 2025). The school district income tax is owed on where you
live, not where you work or attend school. Confirm your district with Ohio’s official
The Finder before filing.
Zip Codes Served by Mason City School District
1 zip code
Frequently Asked Questions
What zip codes are in Mason City School District?▼
Mason City School District serves 1 zip code: 45040. 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 Mason City School District rated?▼
Mason City School District has an overall rating of 10 out of 10 (Excellent), based on the share of students proficient in reading and math on state assessments (Ohio State Tests 2024–25). That places it in the 92nd percentile among Ohio school districts. Ratings are percentile-ranked within Ohio only and are not comparable across states.
How many students attend Mason City School District?▼
The NCES Common Core of Data directory reports enrollment of 10,179 students across 4 schools for Mason City School District.
What grades does Mason City School District serve?▼
Mason City School District is listed in the NCES directory as serving grades Pre-K – 12th.
What schools are in Mason City School District?▼
NCES lists 4 schools operating under Mason City School District: 1 elementary, 1 middle, 1 high, 1 other or combined. Each school's grade span, enrollment and city are listed on this page. Attendance zones are set by the district and a school on this list is not necessarily the one your address is assigned to.
How do I contact Mason City School District?▼
You can reach Mason City School District by phone at (513)398-0474 or online at www.masonohioschools.com or by mail at 211 N East St, Mason, OH 45040. Contact details come from the NCES district directory and are the best way to confirm which school your address is assigned to.
About Mason City School District
Mason City School District is a public school district serving 1 zip code in Ohio, primarily in Warren County. It carries an overall rating of 10/10 (Excellent), the 92nd percentile among Ohio districts. That rating reflects the share of students proficient in reading and math on state assessments (Ohio State Tests 2024–25) and is ranked only against other Ohio districts — scores are not comparable between states. Directory details on this page come from the NCES Common Core of Data, 2024–25.
Schools in this district
NCES lists 4 schools operating under Mason City School District — 1 elementary, 1 middle, 1 high and 1 other or combined. The largest by enrollment is William Mason High School with 3,435 students. School-level enrollment comes from the NCES Common Core of Data school directory; a school with no reported enrollment is shown with a dash rather than a zero.
Checking your own address
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 (513)398-0474 before making a housing decision.