• Atlas of North America (nationalatlas.gov)

• Country Profiles (BBC News)

• GNIS: Geographic Names Information System (USGS)
  Best source for information about places, counties, and other geographic features. Covers United States and territories. Provides links to sites offering map services. Note: Use "populated place" as the feature class for cities and towns (on the pull-down menu).

• Perry-Castañeda Library Map Collection

Delaware

• Delaware DataMIL
  Internet Mapping Service for the State of Delaware. Note: use the Internet Explorer browser.

• Delaware Hundreds (Delaware Geological Survey)
  Map Images From the Pomeroy and Beers Atlas 1868. Available as zipped TIFF files and as PDF files.

Driving Directions

• GoogleMaps
  Includes Google Streets feature.

• Mapquest
  Covers North America and Europe.

• Maps on US
  A map, route, and yellow pages service.

• MSN Maps & Directions (MSN & MapBlast)

• Multimap.com

• YahooMaps

Gazetteers

• Getty Thesaurus of Geographic Names
  Contains nearly 1 million place names representing approximately 900,000 places.

• GEOnet Names Server
  Database of foreign geographic feature names. Coverage is worldwide, excluding the United States and Antarctica. (For U.S. names, use GNIS: Geographic Names Information System.)

• World Gazetteer
  Information about current population of countries, administrative areas, cities and towns. Also images of flags.

Outline Maps

• CIA World Factbook

• Outline Map Sites (Perry-Castañeda Library Map Collection)

• Printable Maps (nationalatlas.gov)

• United States Outline (Quick Maps)

• World Atlas: Maps and Geography of the Word (About.com)

Specialized

• Historical Atlas by William R. Shepherd. 1923 ed.

• How Far Is It?

Zip & Postal Codes

• Free ZIP Code Lookup, Address Lookup & More!
  Multiple zip code lookup functions, including zip codes within a city or county and zip codes within a radius of another zip code.

• U.S. Postal Service

• Zip Code Lookup (USPS)

For more information

• GIS@UD

• Digital Mapping Station (UD Library)

• Resources for Maps

• Credo Reference E-Books: Geography