Title: Resident Population in Yellowstone County, MT Series ID: MTYELL1POP Source: U.S. Census Bureau Release: Annual Estimates of the Population for Counties (Not a Press Release) Seasonal Adjustment: Not Seasonally Adjusted Frequency: Annual Units: Thousands of Persons Date Range: 1970-01-01 to 2022-01-01 Last Updated: 2023-05-03 10:00 AM CDT Notes: Data for "Resident Population" are estimates as of July 1. Data for 1970, 1980, 1990, and 2000 are annual census. Population estimates are updated annually using current data on births, deaths, and migration to calculate population change since the most recent decennial census. The annual time series of estimates begins with the most recent decennial census data and extends to the vintage year. Each vintage of estimates includes all years since the most recent decennial census. DATE VALUE 1970-01-01 87.367 1971-01-01 90.300 1972-01-01 91.900 1973-01-01 93.600 1974-01-01 96.600 1975-01-01 98.900 1976-01-01 101.400 1977-01-01 103.700 1978-01-01 106.900 1979-01-01 108.000 1980-01-01 108.035 1981-01-01 110.377 1982-01-01 113.071 1983-01-01 116.009 1984-01-01 118.497 1985-01-01 119.310 1986-01-01 118.576 1987-01-01 116.422 1988-01-01 114.415 1989-01-01 113.700 1990-01-01 113.557 1991-01-01 115.387 1992-01-01 118.359 1993-01-01 121.194 1994-01-01 123.377 1995-01-01 125.373 1996-01-01 126.623 1997-01-01 127.217 1998-01-01 127.641 1999-01-01 128.736 2000-01-01 129.544 2001-01-01 130.599 2002-01-01 131.791 2003-01-01 133.136 2004-01-01 134.620 2005-01-01 136.550 2006-01-01 138.282 2007-01-01 140.099 2008-01-01 142.687 2009-01-01 144.741 2010-01-01 148.405 2011-01-01 149.805 2012-01-01 151.690 2013-01-01 153.857 2014-01-01 155.379 2015-01-01 156.658 2016-01-01 158.066 2017-01-01 159.425 2018-01-01 160.118 2019-01-01 161.349 2020-01-01 165.196 2021-01-01 167.397 2022-01-01 169.852