邮政编码数据文档指南2006纳税年度的数据显示邮政编码数据显示选定的收入和税目分类由州,邮政编码,调整后的总收益的大小。数据是基于行政记录(个人所得税申报表)国税局的个人主文件(IMF)系统,其中包括每个表单记录1040,1040,1040 ez向美国国税局。记录包括在本研究回报之间提交1月1日,2007年和2007年12月31日。一般来说,这些都是2006年税收回报虽然有限数量的late-filed回报税收在2006年也提出了在此期间。如果纳税人申请返回多个年在此期间,只包括最近返回。表是如何发展邮政编码数据是由排序返回的邮政编码由纳税人提供回报。没有尝试是正确的纳税人提供的邮政编码。在许多情况下,邮政编码目前无效的是有效的在过去的一段时间。与外国或APO和FPO地址返回,或者没有包含一个ZIP代码没有包含在这些统计数据。返回的状态是由邮政编码决定。 Several steps were taken to avoid disclosure of information about individual taxpayers. ZIP codes from which fewer than 10 returns were filed were suppressed. The data for these ZIP Codes are not included in the state totals. Also, when an AGI class for a given ZIP code had a frequency of less than 10, it was combined with another AGI class within the same ZIP Code to create a total of 10 or greater. The order in which this was done was from highest AGI class to lowest AGI. The exception to this rule is when the lowest AGI class had less than 10, the lowest AGI class was combined with the next higher AGI class where the combination of the two classes was greater than or equal to 10. An additional disclosure protection technique employed was the removal of any return that represented a specified percentage of the total of any particular cell. For example, if one return represented 75% of the value of a given cell, that return was suppressed from the tabulation. The actual threshold percentage used, however, cannot be released. The returns suppressed in this manner are not included in the state totals. Statistical Items Shown in the File "Number of Returns" includes a count of all Forms 1040, 1040A and 1040EZ filed with the IRS filed between January 1, 2007 and December 31, 2007. "Total Number of Exemptions" reflects the number of individuals covered on the tax returns. Persons who were claimed as a dependent on another person's return were not allowed to claim an exemption for themselves on their own return. "Number of Dependent Exemptions" includes exemptions claimed for children at home, children away from home, parents, and other dependents. "Adjusted Gross Income" is the amount shown on line 37 of Form 1040. "Salaries and Wages" is the amount shown on line 7 of Form 1040. "Taxable Interest" is the amount shown on line 8a of Form 1040. �Ordinary Dividends� is the amount shown on Form 1040 line 9a. �Net Capital Gain/Loss� is the amount shown on Form 1040, line 13. "Schedule C Net Profit/Loss" is the amount shown on Form 1040, line 12. "Schedule F Net Profit/Loss" is the amount shown on Form 1040, line 18. �IRA Payment Deduction� is the amount shown on Form 1040, line 32. �Self-employed Pension� is the amount shown on Form 1040, line 28. �Total Itemized Deductions� is the amount shown on Schedule A, line 28. �Contributions Deductions� is the amount shown on Schedule A, line 18 �Taxes Paid Deductions� is the amount shown on Schedule A, Line 9. �Alternative Minimum Tax� is the amount shown on Form 1040, line 45. �Income Tax Before Credits� is the amount shown on Form 1040, line 46. "Total Tax" is the amount shown on Form 1040, line 63. �Earned Income Credit� is the amount shown on Form 1040, line 66a.