Title: 90% Confidence Interval Upper Bound of Estimate of Median Household Income for Carroll County, IL Series ID: MHICIUBIL17015A052NCEN Source: U.S. Census Bureau Release: Small Area Income and Poverty Estimates Seasonal Adjustment: Not Seasonally Adjusted Frequency: Annual Units: Dollars Date Range: 1989-01-01 to 2018-01-01 Last Updated: 2019-12-13 11:32 AM CST Notes: The U.S. Census Bureau provides annual estimates of income and poverty statistics for all school districts, counties, and states through the Small Area Income and Poverty Estimates (https://www.census.gov/programs-surveys/saipe/about.html) (SAIPE) program. The bureau's main objective with this program is to provide estimates of income and poverty for the administration of federal programs and the allocation of federal funds to local jurisdictions. In addition to these federal programs, state and local programs use the income and poverty estimates for distributing funds and managing programs. Household income includes income of the householder and all other people 15 years and older in the household, whether or not they are related to the householder. Median is the point that divides the household income distributions into two halves: one-half with income above the median and the other with income below the median. The median is based on the income distribution of all households, including those with no income. A confidence interval is a range of values, from the lower bound to the respective upper bound, that describes the uncertainty surrounding an estimate. A confidence interval is also itself an estimate. It is made using a model of how sampling, interviewing, measuring, and modeling contribute to uncertainty about the relation between the true value of the quantity we are estimating and our estimate of that value. The "90%" in the confidence interval listed above represents a level of certainty about our estimate. If we were to repeatedly make new estimates using exactly the same procedure (by drawing a new sample, conducting new interviews, calculating new estimates and new confidence intervals), the confidence intervals would contain the average of all the estimates 90% of the time. For more details about the confidence intervals and their interpretation, see this explanation (https://www.census.gov/programs-surveys/saipe/guidance/confidence-intervals.html). DATE VALUE 1989-01-01 27852 1990-01-01 . 1991-01-01 . 1992-01-01 . 1993-01-01 31292 1994-01-01 . 1995-01-01 33956 1996-01-01 . 1997-01-01 37990 1998-01-01 40058 1999-01-01 39397 2000-01-01 41234 2001-01-01 40253 2002-01-01 40131 2003-01-01 39956 2004-01-01 41659 2005-01-01 43684 2006-01-01 42793 2007-01-01 45202 2008-01-01 49791 2009-01-01 45034 2010-01-01 50018 2011-01-01 46872 2012-01-01 50735 2013-01-01 47692 2014-01-01 54851 2015-01-01 53681 2016-01-01 55241 2017-01-01 53960 2018-01-01 56487