S&P Global Ratings assigned its 'AAA' long-term rating to Williamson County , Texas' roughly $146.29 million series 2025 unlimited-tax general obligation (GO) road bonds, approximately $67.15 million series 2025 limited-tax refunding and park bonds, and approximately $90.07 million series 2025 limited-tax notes. At the same time, we affirmed our 'AAA' long-term rating on the county's existing unlimited- and limited-tax GO debt. The ratings reflect the application of our ? Methodology For Rating U.S. Governments ,? published Sept. 9, 2024, on RatingsDirect. The outlook is stable. The series 2025 and existing unlimited-tax road bonds are payable from the receipts of a direct and continuing annual ad valorem tax levied, without legal limit as to rate or amount, on all taxable property