S&P Global Ratings assigned its 'AAA' rating to the City of Austin, Texas' series 2019 public improvement and refunding bonds, series 2019 certificates of obligation, series 2019 public property finance contractual obligations, series 2019 taxable public improvement bonds, and series 2019 taxable certificates of obligation. At the same time, S&P Global Ratings affirmed its 'AAA' rating on the city's general obligation (GO) debt and certificates of obligation outstanding. The outlook is stable. In addition, S&P Global Ratings affirmed its 'AA+' rating on Mueller Local Government Corp.'s appropriation debt, supported by the city. The outlook is stable. The 'AAA' long-term rating reflects the strength of Austin's diverse and expanding economy that, in combination with a very strong framework of financial management,