School districts in Texas
63% of the 1,976 populated ZIP Code areas in Texas are served by more than one school district — 1,238 of them, which puts the state 17th among the fifty-two. It is organized into 1,016 unified districts, 1 elementary district and 1 secondary district, the largest being Houston Independent at 658,539 homes. Its most divided ZIP Code area, 75494, is split between 8 districts for elementary grades alone. In 2 of them the answer for grade school is not the answer for high school. The two districts that share the most ZIP Codes here are Dallas Independent and Richardson Independent, in 7 of them. Counted by homes rather than by ZIP Code area, 68% of the state's housing sits in a ZIP Code that more than one district serves.
How often a ZIP Code here crosses a district line
The state is close to the national rate of 53%. Every count below comes from the census blocks in each ZIP Code area rather than from any published table; Houston Independent is the largest district in it, at 658,539 homes.
- ZIP Code areas with a district1,976
- Served by more than one district1,238 (63%)
- Grade school and high school differ2 (0.1%)
- No high school district named0
- Unified districts1,016
- Elementary districts1
- Secondary districts1
- Homes in no district at all0
The largest districts in Texas
Ranked by the homes inside their boundaries: Houston Independent leads at 658,539, then Dallas Independent and Austin Independent. Only districts with a page here are linked; 1,013 more exist in the state without one.
- Austin Independent School District347,237 homes · 38 ZIP areas
- Northside Independent School District267,309 homes · 25 ZIP areas
- Carrollton-Farmers Branch Independent School District84,729 homes · 12 ZIP areas
- Lubbock Independent School District80,627 homes · 15 ZIP areas
- Socorro Independent School District77,223 homes · 6 ZIP areas
The most divided ZIP Code area in Texas
ZIP Code area 75494 holds 5,281 homes and 8 districts take a real share of them for the early grades, but Winnsboro Independent holds 77% on its own at that level. This is the shape that makes a single-name lookup look right: it names Winnsboro Independent and describes most of the homes here, and silently not the rest.
Each percentage here is a share of the 5,281 homes counted in ZIP Code 75494, not the chance that any one address is in that district. Enrollment follows the street: two houses on opposite sides of the same road can be in different districts, and only the district office can say which.
Every track below is 35 cells long and stands for all 5,281 homes counted in ZIP Code 75494, so one cell is 151 homes, rounded to the nearest whole cell. Cells lit solid are the homes one district holds, and the unlit cells are the homes held by the other districts in the same list.
- Winnsboro Independent School District4,082 of 5,281 homes77%
- Harmony Independent School District473 of 5,281 homes9.0%
- Mount Vernon Independent School District269 of 5,281 homes5.1%
- Union Hill Independent School District148 of 5,281 homes2.8%
- Como-Pickton Consolidated Independent School District124 of 5,281 homes2.3%
- Quitman Independent School District106 of 5,281 homes2.0%
- Pittsburg Independent School District46 of 5,281 homes0.9%
- Saltillo Independent School District33 of 5,281 homes0.6%
One further district reaches into this ZIP Code area and holds no homes in it.
For grade school, an answer of one district name would be wrong for 1,199 of the 5,281 here.
How much of Texas a single district name misses
Across the 1,976 ZIP Code areas in Texas with homes in them, an answer of one district name misses 1,483,808 of the 11,588,796 homes they hold — 13% of the state. In 639 of those areas the single name is the whole truth; in the other 1,337 it is not.
In ZIP Code 78572 · Mission, Texas the largest district for grade school is Mission Consolidated Independent, and naming it alone misses 20,877 of the 33,231 homes counted there. The rest are with La Joya Independent and Sharyland Independent.
In ZIP Code 77449 · Houston, Texas the largest district for grade school is Cypress-Fairbanks Independent, and naming it alone misses 20,014 of the 40,123 homes counted there. The rest are with Katy Independent.
In ZIP Code 77084 · Houston, Texas the largest district for grade school is Cypress-Fairbanks Independent, and naming it alone misses 17,800 of the 39,314 homes counted there. The rest are with Katy Independent.
Where a ZIP Code here names more than one district
Of the 1,976 ZIP Code areas in Texas that the federal file names a district for, 1,238 name more than one school district. These are the 12 with the most, starting at 8 districts in one postal area: Winnsboro, Troup and Cleburne. Each row opens the full answer for that ZIP Code, with every district named for grade school and for high school and the share of the homes each one holds.
- ZIP Code 75494 · Winnsboro, Texas8 districts · 5,281 homes
- ZIP Code 75789 · Troup, Texas7 districts · 3,309 homes
- ZIP Code 76031 · Cleburne, Texas7 districts · 6,492 homes
- ZIP Code 76050 · Grandview, Texas7 districts · 2,741 homes
- ZIP Code 76088 · Garner, Texas7 districts · 5,515 homes
- ZIP Code 76673 · Mount Calm, Texas7 districts · 505 homes
- ZIP Code 76705 · Waco, Texas7 districts · 12,545 homes
- ZIP Code 78380 · Robstown, Texas7 districts · 8,489 homes
- ZIP Code 78621 · Elgin, Texas7 districts · 9,553 homes
- ZIP Code 79313 · Anton, Texas7 districts · 651 homes
- ZIP Code 75103 · Canton, Texas6 districts · 6,378 homes
- ZIP Code 75189 · Royse City, Texas6 districts · 12,650 homes
What to do next
Ask the district office to confirm your street address. A district settles that question on its own site: look for a school locator, a find my school tool, or an attendance zone map. Where there is none, ask the office itself.
A ZIP Code is a set of mail delivery routes, not a boundary: 1,238 of the 1,976 ZIP Code areas in Texas with a district named for them are served by more than one school district, and the line between two of them runs along streets. Only the district can say which side of that line an address is on.
This site links to no district website. None of the federal files it is built from publishes one, and a guessed address is worse than none. It is the district office, not a search engine, that settles an address.
If a house purchase depends on the answer, ask the district itself for written confirmation of that exact address. A listing is not a district record, and neither is this page.
What this cannot tell you
The homes were counted in the 2020 Census and the district lines are the 2026 boundary file. Nothing on this page adjusts one to the other. Where houses have been built or cleared since the count, a share here describes the place as it was counted rather than as it stands today, and in the fastest-growing ZIP Code areas that gap is the largest single source of error on this site.
A share on this page is a share of the homes in the ZIP Code area, not a probability for any particular address. Enrollment is decided by street address, and a district may run magnet, charter or choice programs that ignore the boundary entirely. If a decision depends on the answer, the district office is the only authority; this page shows what the federal boundary files say and when they were published.
A district boundary is not a school attendance zone. This site never says which school an address is assigned to: no current national dataset of attendance zones exists, and the district draws them itself. Nor is anything here endorsed or certified by the Census Bureau; we use their published files, and that is the whole of the relationship.
A ZIP Code is a set of mail delivery routes, not an area. What is mapped here is the Census Bureau's ZIP Code Tabulation Area, the closest published approximation to it. The two are not identical, and a handful of ZIP Codes used only for post office boxes or single buildings have no tabulation area at all.
Where these numbers come from
School district boundaries come from the Census Bureau's Census Geographic Relationship File, current 2026 vintage, which assigns every census block to a unified district or to an elementary and a secondary district. Homes and residents in each block come from the 2020 Census Redistricting Data (PL 94-171), H1_001 and P1_001. The ZIP Code areas come from the same Geographic Relationship File, block to ZIP Code Tabulation Area. District names and grade ranges come from the Census Gazetteer 2025, with 2020 for districts no longer listed.
The place name printed beside a ZIP Code comes from the Census 2020 ZIP Code Tabulation Area relationship files: place, county subdivision and county, taken 2026-09-06. It is a label rather than a measurement: the Census Bureau does not publish which post office a ZIP Code belongs to, so the place named is the one covering the most land inside the area, not the city the Postal Service prints on an envelope.
Everything else on this page — the shares, the counts of districts per ZIP, the comparison between the two grade bands, the rankings — is computed here from those files. The source publishes none of it. Snapshot taken 2026-09-03.