Our expenses alone are in the low-end of $3-$4k range, but I put a bracket higher since the extra money we get goes to misc and paying off bills that were accumulated when DH was laid off and I was finishing up school. We are trying to pay them off as quick as possible.
It would be extremely difficult to live in the $2-$3k range here! If we had to, I am sure we could do it, but it'd be very tough.
My mortgage is already low ($675/mo...DH bought the house 20 years ago).
Our utilities are ~$150/mo for electric, gas, water, trash (alternates with trash, so we count them as one for monthly budgeting purposes).
Then you add in food, pet food (3 medium-to-large size dogs, 2 cats, 3 rabbits, and 16 hens), two dog prescriptions ~$30/mo, car insurance (car ins is expensive here! We have the good driver discount, discount for being married
, discount for having a science degree, discount for more than 1 vehicle, etc, and we still pay $250/mo), car payment (This is a luxury item, but we really needed a car with good gas mileage for my commute to work. We did buy used though!), gas...in CA...and I commute quite a distance into Orange County, CA for work (and I think my bills are high now! If I lived there, DH and I would both need second jobs!), plus average in for vehicle registration yearly, holiday expenses (T-giving and Xmas dinners, etc...gifts are minimal since we don't have kids), car expenses, haircuts (for me...I do DHs), internet, DirectTV (and we have a basic package), house maintenance/improvements, etc.
I love where I live and DH and I live pretty frugal. But, to live in the outskirts and live cheaply (not in the big city where the mortgage would equal what are total monthly expenses are here!), means that I need to commute into city for work and that requires much more car maintenance, gas, etc. I put about 30,000 miles on the cars per year just in my commute to work. Property taxes for our property are ~$2,000/yr, sales tax is 8.5%-9.5% depending on the area, high car insurance, high state income tax near 10%, etc.
Having lived in other states, I can honestly say that I LOVE where I live, but lets just say that our typically higher than national average wages are much needed to just get by. I think $3-$4K/mo here would be comparable to $2-$3k in most other states.