Source: U.S. Bureau of the Census
Release: Educational Attainment
Estimate of education attainment using 5 years of data. For more information see Appendix 1 of the ACS General Handbook (http://www.census.gov/content/dam/Census/library/publications/2008/acs/ACSGeneralHandbook.pdf). The date of the data is the end of the 5-year period. For example, a value dated 2012 actually represents data from 2008 to 2012.
U.S. Bureau of the Census, High School Graduate or Higher (5-year estimate) in Polk County, FL [HC01ESTVC1612105], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/HC01ESTVC1612105, June 25, 2018.