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USgeocoder is a customizable Geographic Information System (GIS) web application. It uses proprietary algorithms to integrate multiple data sources and produce the most precise and up-to-date sales tax, political district, census, and mailing information.
Following are our most requested data files offered by USgeocoder. We can customize data output to your unique specifications.
Congressional and state legislative districts are redistricting! As states are releasing new boundary files, USgeocoder takes the new boundary data and runs it through its database to produce the new Zip-To-District congressional and state district data files. If the accuracy of address to district matching is mission critical, you must have our new district data files!
USgeocoder combines address data from multiple sources including US Census Bureau Topologically Integrated Geographic Encoding and Referencing system (TIGER), US Postal Service address delivery system, and county parcel data.
By cross-walking multiple address databases, USgeocoder is able to offer 100% accuracy for congressional district and county assignments, and over 99% accuracy for sales tax shapefile, state legislature, and all other state and local jurisdictions.
USgeocoder is able to geocode addresses as they are delivered to us from USPS. Our proprietary algorithms allow us to achieve over 99% accuracy for district assignments even if no publicly available map exists for the road.
In addition, we consistently look for new data sources and new methods to perfect our accuracy.
The USgeocoder engine is updated with the most recent 2025 US Census files within a few days of release. Our US Postal Service records are updated monthly. Our sales and use tax rate data is updated as the taxing authority publishes new rates. We also update our elected officials database once every month.
You can purchase files by district, state, region, or the whole country. You can also subscribe to our data files for monthly, quarterly, semi-annual, or annual updates.
Run a live demo to see a sample output of our data files. If you have your own addresses, we can provide data processing, mapping, and demographic services to fit your own needs. If you have a custom project, we would love to hear about it!
Please contact us to see how we can help!
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