5 digit us zip code code#
The ratio of residential addresses in the first ZIP-Tract record to the total number of residential addresses in the ZIP code is.
In the example below, ZIP code 03870 is split by two different Census tracts, 3301506605071000, which appear in the tract column. When a ZIP is split by any of the other geographies, that ZIP code is duplicated in the crosswalk file. All three files share an identical structure with the exception of the geographic codes in the second column, which differs between the three crosswalk files – tract, county, and CBSA – respectively. In these files the denominators used to calculate the address ratios are the ZIP code totals. The address ratios in 3 files listed below can be used to allocate data from the ZIP code to Census tracts, counties, or Core Based Statistical Areas (CBSA). Department of Housing & Urban Development’s ZIP Code Crosswalk Files," Cityscape: A Journal of Policy Development and Research, Volume 22, Number 1, Īllocating ZIP Codes to Census tracts, Counties, or CBSA "Crosswalking ZIP Codes to Census Geographies: Geoprocessing the U.S. This article also includes an accuracy analysis.ĭin, Alexander and Wilson, Ron, 2020. In this article, calls for service from New York City's Open Data Portal are estimated at the county-level and census tract-level.
5 digit us zip code how to#
This article demonstrates how to use a GIS to process ZIP Code Crosswalk Files. Using a GIS to Geoprocess ZIP Code Crosswalk Files
Department of Housing and Urban Development’s ZIP Code Crosswalk Files,” Cityscape: A Journal of Policy Development and Research, Volume 20 Number 2, 277 – 294.
Department of Housing and Urban Development (HUD) United States Postal Service ZIP Code Crosswalk Files when working with disparate geographies. The following article demonstrates how to more effectively use the U.S. Though often used for mapping, spatial analysis, and data aggregation careful attention is required when interpreting ZIP Code data relative to other administrative geographies. As a result, ZIP codes that only serve PO Boxes will not appear in the files. Please note that the USPS Vacancy Data is constructed from ZIP+4 data that contains records of addresses, it does not contain ZIP+4 data that are associated with ZIP codes that exclusively serve Postal Office Boxes (PO Boxes). This enables a slightly more nuanced approach to allocating data between disparate geographies. By using an allocation method based on residential addresses rather than by area or by population, analysts can take into account not only the spatial distribution of population, but also the spatial distribution of residences. The latter feature is of particular interest to housing researchers because many of the phenomena that they study are based on housing unit or address. They originate directly from the USPS are updated quarterly, making them highly responsive to changes in ZIP code configurations and reflect the locations of both business and residential addresses. These unique files are derived from data in the quarterly USPS Vacancy Data. To provide additional avenues for merging these data, PD&R has released the HUD-USPS Crosswalk Files. While some acceptable methods of combining ZIP codes and Census geography exist, they have limitations. There are valuable data available only at the ZIP code level that, when combined with demographic data tabulated at various Census geography levels, could open up new avenues of exploration. One of the many challenges that social science researchers and practitioners face is the difficulty of relating United States Postal Service (USPS) ZIP codes to Census Bureau geographies. HUD is not supplying USPS ZIP Code Crosswalks for 2000 Census geographies beyond the fourth quarter of 2011. USPS ZIP Code Crosswalk files are now available for 2010 Census geographies level beginning with the first quarter of 2012. Note: ZIP to Congressional District and Congressional District to ZIP Crosswalk Files are now available To create an account and get an access token, please visit the API page here. With this API, developers can easily access and customize crosswalk data for use in existing applications or to create new applications. HUD’s Office of Policy Development and Research (PD&R) is pleased to announce that HUD-USPS ZIP Code Crosswalk data are now available via an application programming interface (API).
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