Directory & Phone Listings


Locate nonprofits, national, international and local associations, for a total of more than 456,000 organizations. Search by name or acronym, geographic location, subject, SIC code or free-text.

App available for iPhoneiPhoneAndroid Android HelpApp Help

Available with library card

Browse or search Colorado Grants by funder type, name or various criteria. Video Tutorial

Available in any Denver Public Library

Colorado Media Guide

Current, accurate information on Colorado print, news & wire services, college & military, online, radio and TV media. Call or visit the Central Library Reference Department to search the Colorado Media Guide database.

Available only in the Central Denver Public Library

Business and Residential. Find company info by name, geographic location and industry; residential listings by name, address, city, state or zip code. Includes a reverse address/phone number directory. Video Tutorial

Available with library card

Additional Resources

Address and Phone

A site that provides basic information including birth year, month, phone number and address.

800 Directory
Enter a product, service or company name to find a toll free number. En español.

Find people, places and businesses. Has reverse phone number search.

Nationwide yellow and white pages listings. Has reverse phone number search.

National Address Server
Given a valid U.S. postal address, this server attempts to rewrite the address in the proper format along with the ZIP+4 code. If it is successful, you can retrieve a Postscript or a GIF file of the address for printing, with a barcode.

Search for U.S. businesses in online yellow pages, or select People Pages to find individuals. Has reverse phone and address search capability.

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International Calling

Telephone Directories on the Web
Access international directories for every continent, mostly yellow pages.

Country Codes
Find country codes, dialing codes and how to call each country.

International Calling Codes
To search, select the first letter of the country.

Using Mobile Phones Abroad
News and tips from the FCC to avoid unanticipated roaming or data service charges when traveling with your mobile phone.

Area Codes and Zip Codes

AmeriCom Long Distance AREA DECODER
Simply type in the name of a city, state, and/or country, or a city, area, or country phone code.

USPS ZIP Code Lookup and Address Information
Find zip codes and address information from the United States Postal Service.

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Contact Elected Officials
Contact agencies, the White House, legislators, governors, senators and congresspeople by phone, email or U.S. mail. You can find your representative by inputting your zip code.

City and County of Denver
A-Z listing of departments and services including City Council members, museums, neighborhood resources, recreation centers and RTD Board.

Colorado State Web Portal
Find airports, fire and police department, parks, libraries, hospitals, and a state employee directory and drivers license and motor vehicle offices.

Denver Senior Resource Directory (PDF)
Resources with phone numbers from DRCOG Area Agency on Aging.

The Foundation Center
Search by name for basic information on more than 70,000 private and community foundations in the U.S.

FindLaw Lawyer Directory
Search for lawyers or law firms. Browse by state or practice area.

Martindale Hubbell
Find a lawyer by name. Search by location/area of practice, by firm, or for lawyers in corporations, agencies of the U.S. government, or law school faculty.

Mile High United Way
Free or low-cost local community resources.

Public School and School District Locator
Search for schools by locations, description or type.

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Public records

Voter Registration
You can search for people by voter registration if you know their full name, date of birth and zip code.

Personal or Business Tax Delinquencies
Search statewide or by county for foreclosures or personal tax delinquencies over $20,000.

Property Records
You can obtain information about a property in Denver by entering a name, the property address, or the property's parcel identification number.

Inmate Locator
Search for inmates by DOC number, name, date of birth and gender.

Occupational and Professional Licensing
This online search, a public service of the Colorado Division of Registrations, allows you to obtain information about individuals and companies licensed by the Division.

Social Security Death Index
This is a database of death records created from the United States Social Security Administration's Death Master File Extract. Most persons who have died since 1962 who had a Social Security Number (SSN) and whose death has been reported to the Social Security Administration are listed in the SSDI.

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