Massachusetts Population Chart. Massachusetts Population History. The earliest set of recorded population figures can be traced back to 1790, and after 170 years of coloniation, there were aready plenty of people living in Massachusetts. That early census confirmed that 378,787 people were residents in the state.
Mesa County, Colorado (CO) County population in 2016: 150,083 (87% urban, 13% rural); it was 116,255 in 2000 County owner-occupied with a mortgage or a loan houses and condos in 2010: 29,788 County owner-occupied free and clear houses and condos in 2010: 11,718
The city and county of Denver is the second largest county by population, home to 600,158 people as of the 2010 U.S. census. It is followed by Arapahoe County, with 572,003 people; Jefferson County, with 534,543 people; and Adams county, with 441,603 people. The smallest county by population is San Juan County, with a population of 699.