My house in Central Ohio was built in 2008, first moved in in 2009 and I bought in 2013. Appliances 5 years old, 1800 sq feet (not including 500+ sq ft basement + crawl space/utility room). Heat is gas, range is electric - and we cook a lot at home - Metered usage for last month is 600KWH. I have a server (2 spinning disks), router, cable modem and kitchen cabinet LED strips on 24x7. Laptop and 2 other PCs on intermittently; plasma TV + AV and cable receiver on for 6+ hours a day; whole house excluding some closets is LED.
My highest usage for the year was in August for a little less than 1200KWH, but that just shows that half of my electricity usage for that period is all Air Conditioning. 12 month roll up is just under 10,000KWH, so from an average perspective it's on par with yours - however you stated no AC no heat usage... odd.