I live in Maryland, just east of DC, and my house is about 1500 square feet. No basement though. It's an old house, built in 1916, and added onto somewhat haphazzardly, and very poorly insulated. I used to have an oil furnace, and averaged around 450 gallons of oil per year. Heating costs would vary widely, as it was dependent on how much oil went for. First year I was in the house, in late 2003, I only paid $1.19 per gallon. By the summer of '08, prices had spiked to $5.62 per gallon, and I reacted by having an all-electric heat pump put in.
And then, wouldn't you know it...oil prices plummeted, while electric rates went up!

In 2007, my average electricity cost was 11.3 cents per KWH, but that went to 15.6 in '08 and 16.4 in '09.
In '10 it came down though, to 14.9 cents per KWH, and then in '11, I averaged 14.2.
I've read the electric meter from time to time, and around this time of year, over a 24 hour period, have used as much as 200 KWH in a single day (those bitter days when it's windy, cloudy, highs in the teens, lows below zero, you get the idea), and as little as 40-50 (those occasional days when it gets into the upper 50's/early 60's, and doesn't get below freezing at night).
The mid-Dec thru mid-Jan cycle is usually my most expensive bill. In 2009 it was $514 (average daily use 95.4 KWH). In 2010 it was $582! (108.9 KWH daily average). And in 2011 it was $527 (108.3 KWH daily average).
This year has been, thankfully, unseasonably mild. I've been keeping track, and so far have only been averaging around 70 KWH per day. If this trend keeps up (next meter read is on January 18th), I think the bill this time will only be around $350 or so.