ZIP Code Database - ZIP Code List. Immediate download. Easily opened in Excel or imported into a database. No ongoing costs. Premium, enterprise quality zip code list. Cities, coordinates, demographics, and more. Commercial. Personal. Download Now. Samples. Excel (xls) Format. Download Sample. Download Sample. CSV Format. Download Sample. Download Sample. License Terms. Download available. N/APersonal / Educational Use. Yes. Yes. Commercial application. Yes. No. Lookup tool on commercial website. Yes. No. Redistribution. Internal only. No. Data Included. All ZIP Codes. Yes. Yes. Cities Used by USPSYes. Yes. Timezone, area code, county. Yes. Yes. General Latitude / Longitude. Yes. Yes. Precise Latitude / Longitude. Yes. No. Estimated Population. A Free Zip Code Database + Latitude and Longitude. Zip codes represent delivery routes for the post office. Free Zip Code Look Up using. New Mexico; New York; North Carolina. The software allows the user to choose to convert zip codes to the names of the cities. Excel Zip Codes Convert, Lookup & Format Software. Yes. Yes. Census Population. Yes. No. Annual Population Changes(2. Yes. No. Housing Units. Yes. No. Age, Gender, and Race Stats. Yes. No. Income Levels. Yes. No. Home/Rent Costs. Yes. No. Education Levels. Yes. No. Why buy from us? Why don't you offer monthly/quarterly updates? No recurring fee lock- in. Update when you want. We constantly monitor USPS for changes. We only issue updates for significant changes. We constantly monitor USPS data for major changes and release new data when there are significant changes. ZIP boundaries are set to aid mail delivery. ZIP boundaries are set to aid mail delivery. The black outline shows the area of the official city limits. ZIPs with the same city according to USPS have the same color. None of them are actually an incorporated city. Remember that a ZIP code often covers a large geographic area and that very precise latitude and longitude coordinates may be precise down to a very small radius - down to very small fractions of a mile which is much smaller than the geographic area covered by a ZIP code. Changing the latitude or longitude coordinate by a single hundredth of a decimal place results in a shift of approximately 1 mile in any direction. The radius of this shift is shown in the graphic in green. As you can see, the lack of precision due to rounding to two decimal places is insignificant when compared to the reduction in precision caused by reducing a complex shape to a single point. Many of these coordinates have been hand chosen. The lack of additional digits after the decimal serves as a reminder to keep precision in mind when performing any calculations. The most simple method is to use the formula for a rectangle that uses (latitude. This method is shown in the example graphic in red. As you can see, this can frequently result in coordinates that do not actually lie within the region covered by the ZIP code. The point chosen using this method is actually located within a small area that is not covered by the ZIP code. The final method for calculating the ZIP coordinates involves complex shape analysis of the polygon that represents the ZIP code. The result is a coordinate that will be within the largest section of the ZIP code. As you can see from the image where this method is shown in black, this may be significantly different from the other two calculation methods. It can also result in a point that is a much more significant distance from some sections of the ZIP code. For instance, the example has a point that is very far from the south west portion of the ZIP. When doing any type of calculation from these coordinates, it is important to consider that one is trying to describe a large shape by a single point. Please take the above into consideration when choosing which set of coordinates to use. Each can be useful in different types of situations. A Comparison of IRS vs Census Population Estimates. Unless you have a specific need for using data from a specific year, we suggest using the population estimates from the Census Bureau (population. In fact, over 1. 20. ZIPs are estimated to have a population of less than 1. Accuracy. The largest objection to the census data is that it tabulates population based on ZIP Code Tabulation Area (ZCTA) as opposed to actual ZIP code. For 2. 01. 0 only legitimate five- digit areas are defined so there is no longer full nation- wide. The 2. 01. 0 ZCTAs will better represent the actual Zip Code service areas because the. Census Bureau initiated a process before creation of 2. ZIP Codes. The USPS makes periodic changes to ZIP Codes to support more efficient mail. The Code Tabulation Areas process used primarily residential addresses and was biased. ZIP Codes used for city- style mail delivery, thus there may be ZIP Codes that are primarily. ZCTA. Census Bureau. In general, the IRS underestimates the population of a ZIP as compared to ZCTAs by 1. Both of which are documented by the IRS. The full U. S. The IRS documents only around 2. Census. Privacy protection measures prevent the IRS from disclosing ZIP level data for all income brackets. While 2. 89 million exemptions are reported when examining state level data that is not subject to privacy protection, only 2. IRS Estimates Compared to Census. What is more important? Accuracy vs More Recent Data. Estimated Annual Change in ZIP Population. Estimated 5- Year Change in ZIP Population.
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