| District | City | Rating | Students | Schools | Grades | Zip Codes |
|---|---|---|---|---|---|---|
| Round Rock Independent School District | Round Rock | 10/10 Excellent · 91st pct | 46,510 | 60 | PK–12 | 6 |
| Thrall Independent School District | Thrall | 10/10 Excellent · 90th pct | 819 | 3 | PK–12 | 1 |
| Leander Independent School District | Cedar Park | 9/10 Excellent · 86th pct | 42,415 | 50 | PK–12 | 2 |
| Liberty Hill Independent School District | Liberty Hill | 9/10 Excellent · 84th pct | 7,869 | 10 | PK–12 | 1 |
| Hutto Independent School District | Hutto | 5/10 Average · 49th pct | 9,620 | 12 | PK–12 | 1 |
| Georgetown Independent School District | Georgetown | 4/10 Below Average · 37th pct | 13,155 | 21 | PK–12 | 4 |
| Coupland Independent School District | Coupland | 3/10 Below Average · 27th pct | 285 | 1 | PK–12 | 1 |
| Florence Independent School District | Florence | 3/10 Below Average · 26th pct | 1,167 | 3 | PK–12 | 1 |
| Granger Independent School District | Granger | 2/10 Poor · 19th pct | 549 | 1 | PK–12 | 1 |
| Jarrell Independent School District | Jarrell | 2/10 Poor · 12th pct | 3,360 | 4 | PK–12 | 1 |
| Taylor Independent School District | Taylor | 2/10 Poor · 10th pct | 3,138 | 8 | PK–12 | 1 |
| Bartlett Independent School District | Schwertner | 1/10 Poor · 3rd pct | 461 | 1 | PK–12 | 1 |
How Williamson County compares
Together they enroll 129,348 students across 174 schools. The largest is Round Rock Independent School District with 46,510 students. Districts here average 5.0/10, below the Texas average of 5.7/10. Ratings range from 1/10 to 10/10.
School Districts in Williamson County, Texas
Williamson County has 12 public school districts covering 21 zip codes. The top-rated district in Williamson County is Round Rock Independent School District (10/10). Ratings are based on the share of students proficient in reading and math on state assessments (STAAR 2023), ranked against all districts in Texas. Directory details come from NCES CCD 2024–25.
Enter your zip code on any page to confirm your exact district assignment — district boundaries are address-specific and may not follow county or city lines.
Frequently Asked Questions
How many school districts are in Williamson County, TX?
12 school districts serve zip codes in Williamson County, TX. This page lists each one with its rating, enrollment, grade span and the zip codes it covers.
What is the best-rated school district in Williamson County, TX?
Of the districts serving Williamson County, Round Rock Independent School District has the highest rating on this site at 10/10. That places it in the 91st percentile among Texas school districts.
How are these school district ratings calculated?
Each rating is the share of students scoring proficient or above on Texas reading and math assessments, ranked against other districts in Texas and converted to a 1–10 scale. Percentiles compare districts within Texas only, never across state lines.