Top 10 Taxpayers Page Content TaxpayerType of BusinessTaxable Assessed ValueOncor Electric DeliveryElectric Utility$1,679,107.00Aviall IncAviation$1,584,926.00ATT/Southwestern Bell/CingularTelephone Utility$1,012,002.00Texas InstrumentsManufacturing$793,308.00Southwest AirlinesAirline$788,890.00Wal-MartRetail$787,579.00Northpark Land PartnersReal Estate Development$733,710.00Atmos EnergyNatural Gas Distributor$695,048.00FM Village Fixed Rate LLC Real Estate Development$514,687.00Post Apartment Homes LP/Real Estate Development$514,486.00