What is population of pima county?

As an AI language model, I do not have access to the latest and up to date population data for Pima County. However, according to the United States Census Bureau, as of 2019, the estimated population of Pima County was around 1,047,279, making it the second-most populous county in the state of Arizona. The county seat and the largest city in Pima County is Tucson. Pima County is home to a diverse population, with a mix of urban and rural areas, a large Hispanic/Latino population, and a significant Native American community.