What % of US households have at least one PC?

well the best i could find was a census of 2001 in which 56% of
households had a computer. 56% was 61,473 households.

source:
http://www.census.gov/population/socdemo/computer/ppl-175/tab01A.pdf
more information: http://www.census.gov/population/www/socdemo/computer/ppl-175.html

google search term 
united states computer census

Yeah I know. Nothing more recent. Though I did find something that
said 2/3 or households in 2005

deannyc,

The proportion of U.S. households with computers reached 61.8 percent in 2003.

Source: 
A Nation Online:
Entering the Broadband Age 
SEPTEMBER 2004
U.S. DEPARTMENT OF COMMERCE
Economics and Statistics Administration
National Telecommunications and Information Administration  

http://www.ntia.doc.gov/reports/anol/NationOnlineBroadband04.doc

http://www.ntia.doc.gov/reports/anol/NationOnlineBroadband04.htm

Would this information suffice as the answer to your question?

Thanks,
Bobbie7

Does this information serve your purpose?


---------------------------------------- 
          U.S. PC Households
---------------------------------------- 
Year      Number               Percent          
          (In millions) 
2001      71.1                 67%  
2002      74.1                 69  
2003*     77.5                 71  
2004*     80.8                 73  
2005*     84.1                 75  
2006*     86.7                 77  
2007*     88.7                 78  
---------------------------------------- 
1. Projected

Infoplease 
http://www.infoplease.com/ipa/A0908456.html

"A  research report from The Yankee Group found that 67.6 percent of
US households in 2002 contained at least one PC, and the investigators
foresee three-quarters of all US households containing PCs by 2007.
The UCLA study found that surprising numbers of households have more
than one PC. And, in cases where more than one PC is present, the home
computers are often networked."

"Specifically, more than 25 percent of the respondents in the UCLA
study reported having multiple PCs at home, and nearly 10 percent
claimed three or more. Of the participants with more than one system,
32 percent had networked the machines."

http://www.pcmag.com/article2/0%2C1895%2C903358%2C00.asp