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Katy ISD is the school district of the Katy area, enrolling roughly 95,700 students across about 80 campuses. But no single school serves the whole region: attendance zones are set by exact address and shift as the district opens new campuses. This page explains the district, the districts around it, and the exact steps to verify any address before you rely on a school assignment.
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District facts
Katy ISD is one of the larger districts in Texas, headquartered in Katy and reaching into parts of Harris, Fort Bend and Waller Counties. Per the district's public dashboard, enrollment was approximately 95,721 students across 80 schools in late 2025, and the Texas Education Agency's 2025-26 report cards list 95,136 students across 78 schools. Either way, this is a big, growing district: it opens new elementary schools regularly, and every new campus means boundary changes somewhere.
The district is known for consistently strong academics, large high schools (Cinco Ranch, Seven Lakes, Tompkins, Katy, Taylor, Paetow, Morton Ranch and others), deep extracurricular programs and packed attendance zones. The trade-off is scale: commute-to-school distances and traffic at pickup times are real parts of family life here.
Other districts in the area
"Greater Katy" is not one school district. Depending on the address, students attend:
District boundaries are set by each district and can change. Always verify with the specific district for the exact address.
Community to district
Use this table as a starting point only. Zone boundaries run through streets, not communities, and the row below is a district-level label, not a school assignment.
Cinco Ranch
Katy ISD, mostly Cinco Ranch High School
Old Katy / Old Town
Katy ISD, zoned by address
Grand Lakes
Katy ISD, zoned to Seven Lakes High School
Seven Meadows
Katy ISD, zoned to Seven Lakes High School
Firethorne
Mostly Katy ISD; small western section is Lamar CISD
Elyson
Katy ISD, growing campus set
Cane Island
Katy ISD
Sunterra
Katy ISD and Royal ISD sections
Tamarron
Lamar CISD (Tamarron Elementary)
Jordan Ranch
Lamar CISD, Fulshear High School
Cross Creek Ranch
Split: east Katy ISD, west Lamar CISD
Firefly
Verification required; do not assume
Verify before you rely
Subdivision names are marketing, not zoning. Two houses on the same street can feed different schools, and in split communities like Cross Creek Ranch, even different districts.
Katy ISD publishes its official boundary maps and enrollment dashboard at katyisd.org. Enter the street number, street name and ZIP, then note the assigned campuses.
Katy ISD opens new elementaries regularly. A boundary map is a snapshot; an address near a new campus site can rezone within a year or two. Ask the district and your agent about planned schools.
Districts change boundaries between listing and closing. Before you commit, have your agent confirm the assignment and note that school assignments are not guaranteed by any seller or agent.
Official sources
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