County directory · Texas · 2026–27
School districts in Williamson County, TX
Williamson County has 11 regular public school districts, enrolling 133,972 students in 2024–25. The largest is Round Rock ISD (46,954 students, 35% of the county), followed by Leander ISD and Georgetown ISD. All 11 offer kindergarten. Texas's kindergarten cutoff: turn 5 by September 1.
The 11 districts, largest first
| District and office | Grades | Schools | Students | Kindergarten | District office contact |
|---|---|---|---|---|---|
| Round Rock ISD 1311 ROUND ROCK AVE, ROUND ROCK also serves Travis County | Pre-K–12 | 60 | 46,954 | 2,875 | (512) 464-5000 |
| Leander ISD 204 W S ST, LEANDER also serves Travis County | Pre-K–12 | 51 | 42,608 | 2,523 | (512) 570-0000 |
| Georgetown ISD 507 E UNIVERSITY AVE, GEORGETOWN | Pre-K–12 | 22 | 13,881 | 931 | (512) 943-5000 |
| Hutto ISD 200 COLLEGE ST, HUTTO also serves Travis County | Pre-K–12 | 17 | 10,688 | 718 | (512) 759-3771 |
| Liberty Hill ISD 301 FORREST ST, LIBERTY HILL | Pre-K–12 | 13 | 9,836 | 753 | (512) 260-5580 |
| Jarrell ISD 504 N 5TH ST, JARRELL | Pre-K–12 | 8 | 4,157 | 301 | (512) 746-2124 |
| Taylor ISD 3101 N MAIN ST STE 104, TAYLOR | Pre-K–12 | 7 | 2,930 | 172 | (512) 365-1391 |
| Florence ISD 306 COLLEGE AVE, FLORENCE also serves Bell County | Pre-K–12 | 3 | 1,142 | 65 | (254) 793-2850 |
| Thrall ISD 107 S BOUNDS ST, THRALL | Pre-K–12 | 3 | 873 | 47 | (512) 898-0062 |
| Granger ISD 300 N COLORADO ST, GRANGER | Pre-K–12 | 1 | 580 | 38 | (512) 859-2173 |
| Coupland ISD 620 S COMMERCE, COUPLAND also serves Travis County | Pre-K–12 | 2 | 323 | 30 | (512) 856-2422 |
Williamson County at a glance
Together the 11 districts run 187 schools from offices in 11 towns. The smallest by enrollment is Coupland ISD, with 323 students; the median Williamson County district has 4,157. By grade span: 11 Pre-K–12.
Kindergarten in 2024–25, counting the 11 districts that report a K grade: 8,453 children. The biggest kindergarten was Round Rock ISD's, with 2,875; Leander ISD had 2,523, and the smallest, Coupland ISD, had 30.
Williamson County holds 11 of Texas's 1,022 regular districts (1.1%) and 2.6% of its 5,108,224 public school students, ranking 12th of 253 counties by number of districts and 11th by enrollment. By size, 5 enroll 5,000 or more, 3 enroll 1,000 to 4,999 and 3 have fewer than 1,000 students, and the average school here has about 716 students.
5 districts reach past the county line: Round Rock ISD (into Travis County), Leander ISD (into Travis County), Hutto ISD (into Travis County), Florence ISD (into Bell County) and Coupland ISD (into Travis County).
Which district am I in?
Each district draws its own attendance zones, so your home address decides it, and with 5 of Williamson County's districts crossing county lines the county alone won't. There is no address lookup here; ask the district. Each one's own site:
Round Rock ISD · Leander ISD · Georgetown ISD · Hutto ISD · Liberty Hill ISD · Jarrell ISD · Taylor ISD · Florence ISD · Thrall ISD · Granger ISD · Coupland ISD
What grade will my child be in?
More in Texas
Every Texas district by county · Texas kindergarten cutoff
More Texas county directories: Bexar County (15) · Dallas County (15) · Denton County (11) · Grayson County (13) · Hidalgo County (16) · McLennan County (19)