NOTE: THIS DATA FILE WILL CHANGE! To improve accessibility of data for all users, we will convert this file from a text format to an html table by the end of June 2024. Title: Resident Population in Winnebago County, IL Series ID: ILWINN1POP 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 2023-01-01 Last Updated: 2024-03-14 1:57 PM 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 1970-01-01 246.623 1971-01-01 245.500 1972-01-01 244.700 1973-01-01 246.200 1974-01-01 247.400 1975-01-01 246.800 1976-01-01 246.000 1977-01-01 245.700 1978-01-01 247.400 1979-01-01 247.700 1980-01-01 250.884 1981-01-01 251.412 1982-01-01 249.698 1983-01-01 248.221 1984-01-01 247.853 1985-01-01 249.140 1986-01-01 249.009 1987-01-01 249.410 1988-01-01 249.652 1989-01-01 251.202 1990-01-01 253.721 1991-01-01 258.085 1992-01-01 261.397 1993-01-01 264.649 1994-01-01 266.904 1995-01-01 269.020 1996-01-01 271.688 1997-01-01 273.489 1998-01-01 275.161 1999-01-01 276.752 2000-01-01 279.034 2001-01-01 280.737 2002-01-01 282.436 2003-01-01 285.037 2004-01-01 286.661 2005-01-01 289.026 2006-01-01 292.248 2007-01-01 296.889 2008-01-01 298.624 2009-01-01 298.489 2010-01-01 295.090 2011-01-01 293.667 2012-01-01 292.128 2013-01-01 291.006 2014-01-01 288.770 2015-01-01 287.237 2016-01-01 286.171 2017-01-01 284.658 2018-01-01 283.588 2019-01-01 282.465 2020-01-01 284.916 2021-01-01 283.333 2022-01-01 281.542 2023-01-01 280.922