The population of Casa Grande, Arizona on December 15th 2011 is approximately 49,423. (Extrapolated from a 2000 US census population of 25,224 and a population of 48,571 on June 18th 2011.)
C sound A a' sound together Ca, Sa sound S sound a Casa. Grande Gr a as in ow. Nde is as it sounds but DE sounds like Dee. The whole word is Casa Grande.