Archive < Individuals < Small Area Reports 1959 to 1974 Individual Income Tax Returns by Small Area These reports are based on the Internal Revenue Service's Individual Master File (IMF) rather than samples of tax returns. They include individual income tax data by small area. Reports for 1966 and 1969 present data by ZIP code. Reports for 1959/60/61, 1972 and 1974 present data by county. 59/60/61 PDF 1966 PDF 1969 PDF 1972 PDF 1974 PDF Individual Income Tax main page
