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Frequently Asked GIS Questions

Early technology: collecting control data with a Theodolite, which measures angles; USGS, 1940s.The Assessor's Office, Land Use, Open Space, and Transportation Departments are all located in downtown Boulder. The Assessor's office is located on the second floor of the Courthouse on the Pearl Street Mall. Land Use, Open Space and Transportation are located in the Courthouse annex at the southwest corner of 13th and Spruce Streets. The Health Department is located at the northeast corner of Broadway and Iris Streets in North Boulder. The Sheriff's Department is located at the southwest corner of 6th Street and Canyon Blvd. All departments are open Monday through Friday from 8:00 am until 4:30 pm.

Who do I contact for GIS questions?

Contact the relevant department, otherwise contact the Boulder County GIS Coordinator using the contact us link on every page or at 303-441-3958.


What projection and coordinate system does Boulder County use?

Colorado State Plane, North Zone projection, based upon the 1992 HARN adjustment of the 1983 North American Datum (NAD HPGN 83/92).


Is there any imagery of Boulder County?

The county has digital ortho photos of eastern Boulder County taken in April 1999 that can be ordered from this web site.


Where can I purchase the Boulder County Road Map?

A copy of the Boulder County Road Map can be purchased from Boulder County's eStore or at the Transportation Engineering Department at 2045 Spruce St at 13th and Spruce Streets.


Where can I obtain copies of the Sheriff's Mountain Address Maps?

Copies of Boulder County Sheriff's Mountain Address Maps can be viewed or printed, free of charge, from the maps page of this web site.


Where can I obtain copies of the wildfire analysis of Boulder County's urban - wildland interface?

Copies of the WHIMS wildfire hazard maps can be viewed or printed, free of charge, from the maps page of this web site.


Where can I purchase Boulder County's Ditch and Reservoir Map?

The Boulder County Ditch and Reservoir Map, along with the Ditch and Reservoir Directory, can be purchased from Boulder County's eStore or at the Transportation Engineering Department at 2045 Spruce St at 13th and Spruce Streets.


Where can I purchase the latest the Boulder County Open Space Map?

The Boulder County Open Space Map can be purchased from Boulder County's eStore or at the Parks and Open Space Department at 2045 Spruce St at 13th and Spruce Streets.


Can I purchase Assessor Parcel or Precinct Boundary Layers/Datasets?

The Assessor Parcel and Precinct Boundary layers/datasets can be purchased from Boulder County's eStore or ordered from this web site. A signed data sharing license agreement must accompany the order form (both are available on this website).


Can I purchase geocoded and addressed road centerline data? 

The Road Centerline Layer/Datasets can be purchased from Boulder County's eStore or ordered from this web site. It includes address ranges. A signed data sharing license agreement must accompany the order form (both are available on this website).


Can I download any Boulder County GIS data for free?

A number of GIS shapefiles can be downloaded, free of charge from this web site. They are in self-extracting zip format.


How often are the downloadable shapefiles updated?

Downloadable shapefiles are updated as necessary. The last update is listed in the data dictionary (.txt button) on the downloadable shapefiles page in the downloads section of this web site and in the data dictionary included with the shapefile.


Does the county offer support for the GIS data layers downloaded from this site?

Conversions, projections, consultation or support are not provided for general distribution data.


Long's Peak.

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