Which school districts hold Williamson County's property? (DRAFT – not published)

In short

• The county had about 311,000 properties on the books in 2026, up from about 255,000 in 2021. That is about 22% more (our math).¹²
• Three school districts hold about 72% of the value: Round Rock, Leander and Georgetown (our math).¹²
• The fastest growth in property count was in Jarrell, Liberty Hill and Hutto. Jarrell added about 73% more properties (our math).¹²

Numbers marked “our math” are our estimates, not official figures. The notes show the inputs and the steps.

How it works

• Every property in the county sits inside one school district. The appraisal district adds up the value in each one.¹
• This page uses market value. That is the appraisal district’s price before exemptions and caps come off.¹
• It counts only the part of each district inside Williamson County. Some districts, like Leander ISD, also reach into nearby counties.

What the numbers show

School district (Williamson County part)	Properties 2021	Properties 2026	Change	Share of value 2021	Share of value 2026
Round Rock ISD	74,976	78,527	+5%	38.2%	30.5%
Leander ISD	59,990	68,863	+15%	23.2%	22.1%
Georgetown ISD	47,636	60,428	+27%	18.0%	19.1%
Liberty Hill ISD	17,466	28,501	+63%	5.7%	7.9%
Hutto ISD	20,393	28,919	+42%	6.3%	7.2%
Taylor ISD	9,976	11,260	+13%	2.4%	5.0%
Jarrell ISD	11,118	19,220	+73%	3.0%	3.7%
Nine smaller districts	13,329	15,372	+15%	3.3%	4.5%
All	254,884	311,090	+22%	100%	100%

Source: Williamson Central Appraisal District, certified values. Changes and shares are our math.¹²

• Round Rock ISD is still the biggest, but its share fell. Other districts grew faster.²
• Taylor ISD’s value more than tripled, from about $2.6 billion to about $9.4 billion. Its number of properties grew only 13% (our math).¹² See why taylor isd value jumped.

How many new properties are homes?

• Most new buildings in the county are homes. In 2025 the appraisal district counted 8,179 new or growing home properties and 524 business ones. That is about 94 of every 100 (our math).³⁴
• But business projects add more value per project. New business buildings added about $6.3 billion in 2025.³
• Taylor shows this well. See why taylor isd value jumped.

The other side

• A falling share does not mean falling value. Round Rock ISD’s value still rose, from about $40.9 billion to about $57.1 billion (our math).¹²
• Market value is not what gets taxed. Exemptions and caps take a lot off first. See from market value to taxable value.
• The Round Rock ISD row has a gap we could not explain. Its 2026 market value is about $3 billion more than the sum of its value types. We used the market number as printed.
• A “property” can be a house, a lot, a business or a piece of equipment. More properties does not always mean more homes.

Questions to ask

• Will the appraisal district report new homes by school district?
• Where does the appraisal district post value totals for each school district?

Changes to this page

• Nov. 2, 2026: Added questions to ask.

What you can do or watch next

• See what the county value is made of for homes, land and business value.
• See where new residents come from for where new people are moving from.

What we still don’t know

• How many new homes each school district added. The county report gives a county total only.

Footnotes

1. Williamson Central Appraisal District, “1999 – 2026 Certified Values” spreadsheet, 2021 and 2026 tabs, school district rows (“Number of Properties” and “Market”). https://www.wcad.org/historical-data/ ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸

2. Our math. Total properties: 311,090 ÷ 254,884 = 1.22. Total market ($ millions): 107,219.6 (2021), 187,383.4 (2026). Shares 2026: Round Rock 57,075.1, Leander 41,453.9, Georgetown 35,807.8; together 134,336.8 ÷ 187,383.4 = 71.7%. Round Rock 2021 40,924.1 ÷ 107,219.6 = 38.2%. Taylor 2,563.7 → 9,407.0 (3.7 times). Jarrell 19,220 ÷ 11,118 = 1.73; Liberty Hill 28,501 ÷ 17,466 = 1.63; Hutto 28,919 ÷ 20,393 = 1.42. Nine smaller districts: Bartlett, Burnet, Coupland, Florence, Granger, Lexington, Pflugerville, Thorndale, Thrall. ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷

3. Williamson Central Appraisal District, 2025 Annual Report, “Residential Real Estate” (New Construction / Growth: 2021 9,877; 2025 8,179) and “Commercial Real Estate” (New Construction / Growth: 2021 218; 2025 524; added value 2025 $6,349 million). https://www.wcad.org/reports/ ↩ ↩²

4. Our math. 2025: 8,179 ÷ (8,179 + 524) = 94.0%. 2021: 9,877 ÷ (9,877 + 218) = 97.8%. These are counts of accounts, not of houses or businesses. ↩