Costs of maps purchased through regional offices vary widely. It is being used extensively in conjunction with computer mapping programs through the United States. The Census Bureau maps and information are considered public domain, which allows for free copying once purchased. When purchasing any computerized mapping program, consider ease of use, speed, and hardware demands. Adhere to all software licensing regulations.
Prices vary, and most lists are constantly being updated.
New editions may be released quarterly, but that does not mean the list is that current. In some cases, it may take a year or two to completely redo a list. To increase accuracy, run two lists against each other on the computer. Running a third list does not seem to yield much return. How the information is organized will impact how easy it is to use.