Why Can't My GPS/Online Map Find My House?

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There are two major data providers in GIS, GPS, and internet Mapping Services: Tele Atlas (owned by TomTom) and HERE (formerly Navteq). These providers generally purchase their data from local agencies, such as our office. If either supplier purchases our data, it may take them 3-6 months to verify and incorporate it into their databases. Then it may take an additional 3 months or more for their clients to purchase their data and update their GPS or web mapping products.

Emergency Services in Jefferson County use only our data for their mapping system. If your GPS unit or online mapping service cannot find your house, this does not mean that Emergency Services will not be able to locate you in an emergency situation. To verify if your residence or business is located properly on our map, please contact our office at (304)724-6759.