As members of the baby -boomer generation approach retirement  age, much attention  has been focused on whether these individuals are adequately prepared for retirement in regard to  retirement savings.  Research examining retirement adequacy has been mixed with some studies  finding that Americans are adequately prepar ed while others find an insufficient level of  preparedness (e.g., VanDerhei, 2003; The Urban Institute, 2009; Skinner, 2007; Munnell, et al,  2007; Hacker, 2008; Love, et al, 2008; Biggs, 2009).  Using data from the 2004 Survey of  Income and Program Partici pation, we calculate replacement rates for single individuals between  the ages of 55 and 62 by gender, race, educational attainment, and income group.  We compare  our replacement rates to those found in the literature, and by varying our savings rate  assum ption, we perform a sensitivity analysis to highlight the impact of differing savings rates  on the degrees of retirement preparedness for our sample.  Depending on our savings rate  assumption, we find median replacement rates that range from 66 percent to 75 percent for our  sample as a whole, as well as for men and women.  Similar rates are found for our other analysis  groups.  We find little evidence that levels of preparedness dramatically differ across  demographic groups.